GitLab

* Add GPU kernel for 2D continuous cumulative sum in TileLang example

- Introduced a new example script `example_tilelang_cumsum.py` that generates a GPU kernel for 2D continuous cumulative sum.
- Implemented functions to handle kernel configuration, memory allocation, and inclusive scan operations.
- Added a main execution block to demonstrate the kernel's functionality using PyTorch for tensor operations.
- Enhanced the example with error handling for power-of-two configurations and validation of results against PyTorch's built-in cumulative sum function.

* Refactor TileLang examples and enhance kernel compilation

- Updated `example_tilelang_cumsum.py` to improve GPU kernel generation for 2D continuous cumulative sum, including better parameter handling and error checking.
- Refactored `example_mha_bwd.py` to enhance kernel compilation readability and maintainability.
- Modified `kernel_cache.py` to prevent saving kernels to disk when using the DLPack backend, ensuring proper cache management.
- Added `get_block_bindings` function to `kernel.py` for improved access to block bindings in kernel launch frames.
- Cleaned up import statements in `__init__.py` for better organization and clarity.

* Enhance GPU kernel for 2D continuous cumulative sum in TileLang example

- Added additional spacing for improved readability in `example_tilelang_cumsum.py`.
- Refined kernel structure to enhance clarity and maintainability during GPU kernel generation for cumulative sum operations.

* Refactor CUDA post-processing callback registration in TileLang

- Introduced a new decorator `register_cuda_postproc_callback` for registering CUDA post-processing functions, enhancing usability and flexibility.
- Updated existing callback implementations to utilize the new decorator, improving code clarity and maintainability.
- Added debug prints to the CUDA code generation process for better traceability during development.
- Refactored the `OptimizeForTarget` function to streamline conditional statement handling in the pipeline transformation.
- Cleaned up the `inject_pipeline.cc` file by removing redundant code related to statement grouping and condition handling.

* lint fix

* Enhance BlockSparse GEMM Example with Autotuning and Configurable Parameters

- Added argument parsing to allow dynamic configuration of matrix dimensions and sparsity ratio.
- Implemented a function to generate various kernel configurations for autotuning.
- Refactored the main execution block to support both autotuned and default configurations.
- Improved the block mask generation to accommodate specified sparsity levels.
- Updated the kernel compilation process to utilize the new configurations and ensure accurate results verification.

* Add GPU kernel for 2D continuous cumulative sum in TileLang example

- Introduced a new example script `example_tilelang_cumsum.py` that generates a GPU kernel for 2D continuous cumulative sum.
- Implemented functions to handle kernel configuration, memory allocation, and inclusive scan operations.
- Added a main execution block to demonstrate the kernel's functionality using PyTorch for tensor operations.
- Enhanced the example with error handling for power-of-two configurations and validation of results against PyTorch's built-in cumulative sum function.

* Refactor TileLang examples and enhance kernel compilation

- Updated `example_tilelang_cumsum.py` to improve GPU kernel generation for 2D continuous cumulative sum, including better parameter handling and error checking.
- Refactored `example_mha_bwd.py` to enhance kernel compilation readability and maintainability.
- Modified `kernel_cache.py` to prevent saving kernels to disk when using the DLPack backend, ensuring proper cache management.
- Added `get_block_bindings` function to `kernel.py` for improved access to block bindings in kernel launch frames.
- Cleaned up import statements in `__init__.py` for better organization and clarity.

* Enhance GPU kernel for 2D continuous cumulative sum in TileLang example

- Added additional spacing for improved readability in `example_tilelang_cumsum.py`.
- Refined kernel structure to enhance clarity and maintainability during GPU kernel generation for cumulative sum operations.

* add autotune to example_gemm.py

* add autotune to example_gemm.py

* add autotune to example_gemm.py

* add autotune to example_gemm.py

* remove llvm build

* [Refactor] Update kernel compilation and profiling in examples

- Replaced `tilelang.lower` with `tilelang.compile` in multiple example scripts to streamline kernel compilation.
- Updated profiling calls to utilize the new `get_profiler` method, enhancing performance measurement consistency.
- Adjusted assertions and benchmarking methods to align with the new profiling structure across various examples, ensuring correctness and clarity in performance evaluations.

* lint fix

* License Update

* [Refactor] Improve code formatting and documentation in CUDA header and HIP runtime files

- Adjusted formatting in `cuda.h` for better readability, including alignment of comments and struct fields.
- Cleaned up whitespace and improved comment clarity in `rt_mod_hip.cc` to enhance code maintainability.

* [Refactor] Enhance formatting and clarity in CUDA header and HIP runtime files

- Improved comment alignment and readability in `cuda.h`.
- Cleaned up whitespace and formatting in `rt_mod_hip.cc` to enhance maintainability.

* lint fix

* lint fix

* lint fix

* lint fix

* fix

* License update

* [Enhancement] Update JITKernel to use artifact for kernel source

- Assigned the generated artifact to `self.artifact` for better management.
- Updated kernel source references to use `artifact.kernel_source` for consistency in execution backend handling.

* lint fix

* Add @tilelang.testing.requires_llvm decorator to vectorization tests

* Enhance setup.py and env.py for library management

- Added functionality to remove original files after copying in CMakeBuild.
- Updated TVM_LIBRARY_PATH in env.py to include the PyPI build library path for better integration.

* Refactor TVM_LIBRARY_PATH assignment for improved readability in env.py

* Refactor CMakeBuild file handling in setup.py

- Added a check to ensure the target library directory exists before copying .so files.
- Improved the logic for creating the target directory and copying files to enhance robustness.

* bugfix

* Rename BuildTLDebug to BuildTileLangCUDAWithoutCompile and update registration. Add @tilelang.testing.requires_llvm decorator to multiple tests for LLVM requirement.

* lint fix

* Enhance TileLang code generation by adding support for device code generation without compilation. Updated `host_codegen` and `device_codegen` functions to include new transformations and registration for `tilelang_hip_without_compile`. Refactored JIT kernel adapters to accommodate host and device modules, improving overall integration and flexibility.

* lint fix

* Add support for C target in device code generation

- Updated `device_codegen_without_compile` to include handling for the C target by registering the `tilelang_cpp` function.

* [Enhancement] Implement auto-clear cache feature based on environment variable

* Added TILELANG_CLEAR_CACHE environment variable to control cache clearing.
* Updated CI workflow to set TILELANG_CLEAR_CACHE during testing.
* Modified cache initialization to clear cache if TILELANG_CLEAR_CACHE is set to true.

* [Refactor] Update kernel invocation and import paths in tests and cache

* Changed kernel invocation in `test_tilelang_kernel_dequantize_gemm.py` to return the result.
* Updated import statements in `test_tilelang_kernel_int4_gemm_mma.py` to use `bitblas` instead of `tilelang`.
* Refactored paths for artifact and parameters in `kernel_cache.py` for better maintainability.

* [Refactor] Clean up whitespace and improve code formatting in kernel_cache.py

* Removed unnecessary blank lines and adjusted spacing for better readability in the KernelCache class.
* Enhanced overall code formatting to align with project standards.

* [Enhancement] Add bfloat16 test case and improve kernel caching logic

* Introduced a new test case for bfloat16 matrix multiplication in `test_tilelang_kernel_gemm_mma_intrinsic.py`.
* Updated `KernelCache` to handle multiple kernel source files and improve error handling during saving and loading.
* Refactored `JITKernel` to support instantiation from a database, enhancing flexibility in kernel management.
* Adjusted `CtypesKernelAdapter` and `CythonKernelAdapter` to utilize the new kernel loading mechanism from the database.
* Improved code formatting and readability across several files.

* lint fix

* Update bfloat16 matrix multiplication test case to use larger dimensions for improved coverage

* [Example] Modify tuning configurations for FlashAttention example

* [Examples] formatting example_gqa_fwd_bshd.py

* [Examples] Implement elementwise add kernel

* [Doc] Update ElementWise Operators document

* [Examples] Replace the example of elementwise add.

* [BugFix] Fix bug of missing MBarrierExpectTX

* [Dev] Implement FlashAttention3 Backward

- Added a new example for Flash Attention using pipelined WGMMA, including forward and backward pass implementations.
- Introduced functions for forward and backward processing, leveraging tilelang for optimized tensor operations.
- Enhanced the attention mechanism with support for both causal and non-causal configurations.
- Included command-line arguments for batch size, number of heads, context size, and head dimension for flexibility in testing.
- Updated GEMM operations to support a new `wg_wait` parameter for improved synchronization in kernel execution.

* [Feature] Add reduce_max functionality and corresponding tests

* Introduced a new test file for the reduce_max operation in the tilelang language module.
* Implemented the reduce_max functionality using T.prim_func, including local memory allocation and result copying.
* Added tests for various input sizes and data types to ensure correctness of the reduce_max implementation.
* Enhanced profiling assertions to validate the output against reference implementations.

* Fix whitespace issues in reduce_max test file for improved readability

* [Refactor] Update DebugOutput methods to return strings instead of void

* Modified DebugOutput methods in LayoutNode, FragmentNode, and SwizzledLayoutNode to return std::string instead of void, enhancing usability for logging and debugging.
* Updated corresponding header files to reflect the new return types.
* Improved layout inference error messages by incorporating DebugOutput for better clarity in layout conflicts.

* lint fix

* Fix typo in matmul function: changed loop from T.Parallel to T.grid for correct parallel execution in webgpu code generation tests.

* [Enhancement] Improve layout inference conflict handling in ParallelOp

* Updated the layout inference logic in ParallelOp to better handle conflicts for local.fragment buffers.
* Added checks to ensure that layout conflicts are reported only when both source and destination buffers are defined, improving clarity in error messages.
* Enhanced the overall robustness of the layout inference process by addressing specific cases where conflicts may arise.

* [Feature] Add IsEqual methods for layout comparison

* Introduced IsEqual methods in LayoutNode, FragmentNode, and SwizzledLayoutNode to facilitate structural equality checks, allowing for optional index comparison.
* Enhanced layout inference logic in Copy and ParallelOp to utilize the new IsEqual methods for better conflict detection in local.fragment layouts.
* Improved error messages for layout conflicts to provide clearer guidance on potential issues.houm

* [Refactor] Update profiler usage in benchmark_nsa_fwd.py and improve layout inference in elem.cc and parallel.cc

* Modified the profiler call in benchmark_nsa_fwd.py to streamline latency measurement.
* Updated layout inference logic in elem.cc and parallel.cc to use const pointers for FragmentNode, enhancing type safety and clarity.
* Improved error messages in layout conflict checks to provide better guidance on potential issues.

* [Refactor] Clean up pointer formatting in layout inference files

* Standardized pointer formatting for FragmentNode in elem.cc and parallel.cc to improve code readability.
* Minor adjustments to error message formatting in layout conflict checks for better clarity.

* add fp8 gemm 2xAcc and deepgemm example.

* format deepgemm example.

* fix the fotmat lint.

* format with the updated format.sh

- Replaced instances of `tilelang.lower` and `tilelang.Profiler` with `tilelang.compile` and the new profiler interface in multiple example files.
- Enhanced the kernel compilation process to utilize the updated API, improving consistency and maintainability.
- Adjusted benchmarking logic to use the new profiler methods for better clarity and functionality in performance testing.
- Cleaned up whitespace and improved formatting for better readability across the modified files.

* Optimize CMake build process with dynamic job count calculation

- Modify build_csrc function to use 90% of available CPU cores
- Ensure at least one job is used during compilation
- Improve build performance by dynamically adjusting parallel job count

* Optimize build_csrc function with multiprocessing module

- Replace os.cpu_count() with multiprocessing.cpu_count()
- Maintain existing 90% CPU utilization logic
- Improve CPU core count calculation for build process

* Add dynamic shape support with out_idx in Cython JIT kernel compilation

- Implement `run_cython_dynamic_shape_with_out_idx` function in test_tilelang_jit_gemm_cython.py
- Update Cython wrapper to handle dynamic symbolic shapes during tensor allocation
- Add support for resolving dynamic shape dimensions using input tensor references
- Enhance flexibility of JIT kernel compilation with symbolic shape handling

* Enhance error reporting for dynamic symbolic shape resolution in Cython JIT kernel

- Add detailed error message when a dynamic symbolic dimension is not found in dynamic_symbolic_map
- Improve debugging by providing context about missing symbolic dimensions
- Maintain existing dynamic shape resolution logic

* Fix Copy operation handling for scalar and multi-dimensional tensors

- Add special handling for scalar tensor copy operations
- Enhance error reporting in MakeIndices method with more detailed diagnostic information
- Improve SIMT loop generation to support zero-dimensional tensors
- Add explicit check and handling for scalar tensor scenarios

* Refactor Copy operation code formatting and improve readability

- Improve code formatting in MakeIndices and MakeSIMTLoop methods
- Add line breaks to enhance readability of complex ICHECK statements
- Simplify code structure in scalar tensor handling
- Remove unnecessary whitespace and improve code alignment

* Simplify GEMM example with direct kernel compilation

- Update copyright header to Tile-AI Corporation
- Remove Profiler import and usage
- Replace tilelang.lower() with tilelang.compile()
- Simplify kernel execution workflow
- Update kernel source retrieval method

* Enhance block sparse attention implementation

- Update `blocksparse_flashattn` to use 2 stages for improved performance.
- Change `block_mask_dtype` from `int8` to `bool` for better memory efficiency.
- Modify condition checks in the kernel to utilize boolean values.
- Introduce a new example for top-k sparse attention and a benchmark for native sparse attention.
- Add support for asynchronous copy in PTX and improve pipeline planning with condition handling.

* Refactor and clean up code formatting across multiple files

- Added whitespace for improved readability in `example_blocksparse_gemm.py`, `example_tilelang_nsa_fwd.py`, and `benchmark_nsa_fwd.py`.
- Enhanced code structure and alignment in `inject_ptx_async_copy.cc` and `pipeline_planning.cc`.
- Updated comments and documentation for clarity in `__init__.py` and `phase.py`.
- Ensured consistent formatting and style across the codebase.

* Add kernel source printing in example_tilelang_nsa_fwd.py and implement IfThenElse node replacement in inject_pipeline.cc

- Added a print statement to output the kernel source in `example_tilelang_nsa_fwd.py` for debugging purposes.
- Introduced a new function `replace_if_then_else` in `inject_pipeline.cc` to transform IfThenElse nodes while preserving attributes, enhancing the handling of conditional statements in the pipeline.

* Refactor condition handling in inject_pipeline.cc

- Change the data structure for mapping conditions to statements from a Map to an Array for improved performance and simplicity.
- Update condition comparison logic to use StructuralEqual for better accuracy.
- Enhance logging to provide detailed insights into condition changes and statement processing.
- Adjust final statement construction to utilize the new data structure, ensuring correct handling of conditions and statements.

* Improve logging and formatting in inject_pipeline.cc

- Enhance logging statements for better clarity on condition changes and statement processing.
- Adjust formatting for improved readability, including line breaks and consistent spacing.
- Ensure accurate condition comparison and handling in the pipeline logic.

* Refactor logging and clean up inject_pipeline.cc

- Remove excessive logging statements to streamline the code and improve performance.
- Simplify condition handling by eliminating unnecessary log outputs related to condition changes and statement processing.
- Maintain the core functionality while enhancing code readability and maintainability.

* Update Dockerfiles to specify exact version of libstdcxx-ng

- Change installation command in multiple Dockerfiles to use `libstdcxx-ng=12` instead of `libstdcxx-ng-12` for consistency and to avoid potential issues with package resolution.
- Ensure all Dockerfiles from cu118 to cu126 reflect this change for uniformity across builds.

* Refactor and enhance examples and kernel handling

- Adjusted the pipeline stages in `example_blocksparse_gemm.py` from 2 to 1 for improved performance.
- Added kernel source printing in `benchmark_nsa_fwd.py` for better debugging and profiling insights.
- Updated tensor allocation and parameter handling in `CtypesKernelAdapter` and `CythonKernelWrapper` to cache parameter dtypes and shapes, improving efficiency and clarity.
- Enhanced the handling of dynamic shapes in the Cython JIT kernel compilation process.
- Modified the benchmark script to accommodate new tensor output parameters and improved batch size defaults for testing.

* Update copyright header in Cython wrapper to reflect Tile-AI Corporation

* revert change

* [Example] Modify tuning configurations for FlashAttention example

* [Examples] formatting example_gqa_fwd_bshd.py

- Introduce `example_gqa_bwd.py` demonstrating the backward pass of FlashAttention with pipelined execution.
- Implement forward and backward functions for FlashAttention, including preprocessing and postprocessing steps.
- Enhance argument parsing for batch size, heads, context size, and dimensions.
- Include a reference implementation for validation and performance benchmarking.

* upgrade cutlass to upstream v3.8.0

* Implement fp8 gemm and add example script

* Fix dtype retrieval with map_torch_type for fp8 inputs

* Disable vectorization of fp8 values

* Make MMA declaration compatible with cutlass 3.4.0+

* Add test for fp8 T.gemm

* fix indent

* fix indent

* Add copyright and license header

* Add copyright and license header

* lint fix

* Refactor matmul_nt and assert_matmul_correctness functions for improved readability by consolidating parameter definitions and adjusting formatting.

* clang format lint

---------
Co-authored-by: Lei Wang <34334180+LeiWang1999@users.noreply.github.com>
Co-authored-by: LeiWang1999 <leiwang1999@outlook.com>

* Optimize CMake build process with dynamic job count calculation

- Modify build_csrc function to use 90% of available CPU cores
- Ensure at least one job is used during compilation
- Improve build performance by dynamically adjusting parallel job count

* Optimize build_csrc function with multiprocessing module

- Replace os.cpu_count() with multiprocessing.cpu_count()
- Maintain existing 90% CPU utilization logic
- Improve CPU core count calculation for build process

* Add dynamic shape support with out_idx in Cython JIT kernel compilation

- Implement `run_cython_dynamic_shape_with_out_idx` function in test_tilelang_jit_gemm_cython.py
- Update Cython wrapper to handle dynamic symbolic shapes during tensor allocation
- Add support for resolving dynamic shape dimensions using input tensor references
- Enhance flexibility of JIT kernel compilation with symbolic shape handling

* Enhance error reporting for dynamic symbolic shape resolution in Cython JIT kernel

- Add detailed error message when a dynamic symbolic dimension is not found in dynamic_symbolic_map
- Improve debugging by providing context about missing symbolic dimensions
- Maintain existing dynamic shape resolution logic

* Fix Copy operation handling for scalar and multi-dimensional tensors

- Add special handling for scalar tensor copy operations
- Enhance error reporting in MakeIndices method with more detailed diagnostic information
- Improve SIMT loop generation to support zero-dimensional tensors
- Add explicit check and handling for scalar tensor scenarios

* Refactor Copy operation code formatting and improve readability

- Improve code formatting in MakeIndices and MakeSIMTLoop methods
- Add line breaks to enhance readability of complex ICHECK statements
- Simplify code structure in scalar tensor handling
- Remove unnecessary whitespace and improve code alignment

* Simplify GEMM example with direct kernel compilation

- Update copyright header to Tile-AI Corporation
- Remove Profiler import and usage
- Replace tilelang.lower() with tilelang.compile()
- Simplify kernel execution workflow
- Update kernel source retrieval method

* Enhance block sparse attention implementation

- Update `blocksparse_flashattn` to use 2 stages for improved performance.
- Change `block_mask_dtype` from `int8` to `bool` for better memory efficiency.
- Modify condition checks in the kernel to utilize boolean values.
- Introduce a new example for top-k sparse attention and a benchmark for native sparse attention.
- Add support for asynchronous copy in PTX and improve pipeline planning with condition handling.

* Refactor and clean up code formatting across multiple files

- Added whitespace for improved readability in `example_blocksparse_gemm.py`, `example_tilelang_nsa_fwd.py`, and `benchmark_nsa_fwd.py`.
- Enhanced code structure and alignment in `inject_ptx_async_copy.cc` and `pipeline_planning.cc`.
- Updated comments and documentation for clarity in `__init__.py` and `phase.py`.
- Ensured consistent formatting and style across the codebase.

* Add kernel source printing in example_tilelang_nsa_fwd.py and implement IfThenElse node replacement in inject_pipeline.cc

- Added a print statement to output the kernel source in `example_tilelang_nsa_fwd.py` for debugging purposes.
- Introduced a new function `replace_if_then_else` in `inject_pipeline.cc` to transform IfThenElse nodes while preserving attributes, enhancing the handling of conditional statements in the pipeline.

* Refactor condition handling in inject_pipeline.cc

- Change the data structure for mapping conditions to statements from a Map to an Array for improved performance and simplicity.
- Update condition comparison logic to use StructuralEqual for better accuracy.
- Enhance logging to provide detailed insights into condition changes and statement processing.
- Adjust final statement construction to utilize the new data structure, ensuring correct handling of conditions and statements.

* Improve logging and formatting in inject_pipeline.cc

- Enhance logging statements for better clarity on condition changes and statement processing.
- Adjust formatting for improved readability, including line breaks and consistent spacing.
- Ensure accurate condition comparison and handling in the pipeline logic.

* Refactor logging and clean up inject_pipeline.cc

- Remove excessive logging statements to streamline the code and improve performance.
- Simplify condition handling by eliminating unnecessary log outputs related to condition changes and statement processing.
- Maintain the core functionality while enhancing code readability and maintainability.

- Introduce `example_gqa_fwd_bshd_wgmma_pipelined.py` demonstrating a pipelined implementation of FlashAttention.
- Update sequence length parameter in existing example to 8192 and adjust number of stages for improved performance.
- Enhance argument parsing to accommodate new configurations for batch size, heads, and groups.

* Optimize CMake build process with dynamic job count calculation

- Modify build_csrc function to use 90% of available CPU cores
- Ensure at least one job is used during compilation
- Improve build performance by dynamically adjusting parallel job count

* Optimize build_csrc function with multiprocessing module

- Replace os.cpu_count() with multiprocessing.cpu_count()
- Maintain existing 90% CPU utilization logic
- Improve CPU core count calculation for build process

* Add dynamic shape support with out_idx in Cython JIT kernel compilation

- Implement `run_cython_dynamic_shape_with_out_idx` function in test_tilelang_jit_gemm_cython.py
- Update Cython wrapper to handle dynamic symbolic shapes during tensor allocation
- Add support for resolving dynamic shape dimensions using input tensor references
- Enhance flexibility of JIT kernel compilation with symbolic shape handling

* Enhance error reporting for dynamic symbolic shape resolution in Cython JIT kernel

- Add detailed error message when a dynamic symbolic dimension is not found in dynamic_symbolic_map
- Improve debugging by providing context about missing symbolic dimensions
- Maintain existing dynamic shape resolution logic

* Fix Copy operation handling for scalar and multi-dimensional tensors

- Add special handling for scalar tensor copy operations
- Enhance error reporting in MakeIndices method with more detailed diagnostic information
- Improve SIMT loop generation to support zero-dimensional tensors
- Add explicit check and handling for scalar tensor scenarios

* Refactor Copy operation code formatting and improve readability

- Improve code formatting in MakeIndices and MakeSIMTLoop methods
- Add line breaks to enhance readability of complex ICHECK statements
- Simplify code structure in scalar tensor handling
- Remove unnecessary whitespace and improve code alignment

* Simplify GEMM example with direct kernel compilation

- Update copyright header to Tile-AI Corporation
- Remove Profiler import and usage
- Replace tilelang.lower() with tilelang.compile()
- Simplify kernel execution workflow
- Update kernel source retrieval method

* Enhance block sparse attention implementation

- Update `blocksparse_flashattn` to use 2 stages for improved performance.
- Change `block_mask_dtype` from `int8` to `bool` for better memory efficiency.
- Modify condition checks in the kernel to utilize boolean values.
- Introduce a new example for top-k sparse attention and a benchmark for native sparse attention.
- Add support for asynchronous copy in PTX and improve pipeline planning with condition handling.

* Refactor and clean up code formatting across multiple files

- Added whitespace for improved readability in `example_blocksparse_gemm.py`, `example_tilelang_nsa_fwd.py`, and `benchmark_nsa_fwd.py`.
- Enhanced code structure and alignment in `inject_ptx_async_copy.cc` and `pipeline_planning.cc`.
- Updated comments and documentation for clarity in `__init__.py` and `phase.py`.
- Ensured consistent formatting and style across the codebase.

Expired example code, update readme.

* Optimize CMake build process with dynamic job count calculation

- Modify build_csrc function to use 90% of available CPU cores
- Ensure at least one job is used during compilation
- Improve build performance by dynamically adjusting parallel job count

* Optimize build_csrc function with multiprocessing module

- Replace os.cpu_count() with multiprocessing.cpu_count()
- Maintain existing 90% CPU utilization logic
- Improve CPU core count calculation for build process

* Add dynamic shape support with out_idx in Cython JIT kernel compilation

- Implement `run_cython_dynamic_shape_with_out_idx` function in test_tilelang_jit_gemm_cython.py
- Update Cython wrapper to handle dynamic symbolic shapes during tensor allocation
- Add support for resolving dynamic shape dimensions using input tensor references
- Enhance flexibility of JIT kernel compilation with symbolic shape handling

* Enhance error reporting for dynamic symbolic shape resolution in Cython JIT kernel

- Add detailed error message when a dynamic symbolic dimension is not found in dynamic_symbolic_map
- Improve debugging by providing context about missing symbolic dimensions
- Maintain existing dynamic shape resolution logic

* Fix Copy operation handling for scalar and multi-dimensional tensors

- Add special handling for scalar tensor copy operations
- Enhance error reporting in MakeIndices method with more detailed diagnostic information
- Improve SIMT loop generation to support zero-dimensional tensors
- Add explicit check and handling for scalar tensor scenarios

* Refactor Copy operation code formatting and improve readability

- Improve code formatting in MakeIndices and MakeSIMTLoop methods
- Add line breaks to enhance readability of complex ICHECK statements
- Simplify code structure in scalar tensor handling
- Remove unnecessary whitespace and improve code alignment

* Simplify GEMM example with direct kernel compilation

- Update copyright header to Tile-AI Corporation
- Remove Profiler import and usage
- Replace tilelang.lower() with tilelang.compile()
- Simplify kernel execution workflow
- Update kernel source retrieval method

* [Dev][Bugfix] Add RMS Normalization Kernels and Fix Reduce Bug

- Implement two RMS normalization implementations in TileLang:
  * `rms_norm_splitk`: Split-K reduction approach for large matrices
  * `rms_norm`: Full reduction kernel with simplified implementation
- Add reference implementation using PyTorch for validation
- Include performance benchmarking for both kernel variants
- Demonstrate flexible block size and matrix size configurations

* [Examples] Simplify RMS Normalization Kernel Compilation

- Remove commented-out code for split-K RMS normalization
- Simplify kernel compilation by removing explicit TMA lowering configuration
- Update copyright header to Tile-AI Corporation
- Streamline main script for RMS normalization example

* Update native sparse attention example with scale parameter handling

- Add scale parameter processing in native_sparse_attention function
- Modify example script to include custom scale value
- Update function calls to pass scale parameter
- Enhance flexibility of sparse attention implementation

* Refactor Triton Native Sparse Attention Example

- Improve code formatting and readability in example_triton_nsa_bwd.py
- Standardize function and parameter alignment
- Remove unnecessary whitespaces and optimize imports
- Enhance code style consistency with previous commits

* Add kernel caching mechanism to TileLang

- Implement a new `cached` function in `tilelang/cache/__init__.py` to cache and reuse compiled kernels
- Expose the `cached` function in the main `tilelang/__init__.py`
- Add a test case for cached matrix multiplication in `testing/python/cache/test_tilelang_cache_matmul.py`
- Provide a `clear_cache()` function to reset the kernel cache when needed

* Refactor kernel caching test and implementation

- Simplify the `cached` function in `tilelang/cache/__init__.py`
- Update test script `test_tilelang_cache_matmul.py` to use `tilelang.testing.main()`
- Remove unnecessary whitespace and improve code formatting

* Update import for `cached` function in MHA examples

- Modify import statement in `example_mha_bwd.py` and `test_tilelang_kernel_mha_bwd.py`
- Change import from `tilelang.profiler import cached` to `tilelang import cached`
- Align with recent refactoring of kernel caching mechanism

* Refactor `cached` function signature in kernel caching

- Update function signature to use keyword-only arguments for `target` and `target_host`
- Improve parameter order and readability of the `cached` decorator
- Maintain existing functionality while enhancing function definition

* [Refactor] Update BitBLAS Benchmark with TileLang Carver Imports and Roller Hints Generation

- Replace BitBLAS imports with TileLang Carver imports in benchmark_matmul.py
- Modify roller hints generation using new TileLang Carver template and utility functions
- Update get_roller_hints_from_func to handle None cases and improve return logic
- Adjust DefaultPolicy to handle different codegen dictionary formats

* [Refactor] Update Thread Binding and Import Statements in TileLang Kernels

- Replace T.thread_binding() with T.get_thread_binding() across multiple kernel test files
- Update import statements for MMA layout and macro generator in dequantize GEMM and FP8 examples
- Move map_torch_type utility function to tilelang.utils.tensor
- Remove unnecessary imports and improve code organization

* Refactor Native Sparse Attention Example with Enhanced Triton Kernel

- Update parallel_nsa_fwd_kernel to support more flexible sparse attention computation
- Add support for block counts and offsets in the Triton kernel
- Modify kernel grid and computation logic for improved performance
- Update example script to use naive_nsa_simple reference implementation
- Improve type hints and kernel configuration

* Add Native Sparse Attention Examples with Tilelang and Triton Implementations

- Introduce new example scripts for native sparse attention:
  * example_tilelang_nsa_fwd.py: Forward pass implementation using TileLang
  * example_tilelang_nsa_decode.py: Decoding-specific sparse attention implementation
  * example_triton_nsa_fwd.py: Triton-based sparse attention forward pass
- Update reference.py with naive implementations for sparse attention
- Support different sparse attention scenarios including forward pass and inference
- Add comprehensive testing and validation against reference implementations

* lint fix

* Add Variable-Length Native Sparse Attention Examples for TileLang and Triton

- Introduce new example scripts for variable-length native sparse attention:
  * example_tilelang_nsa_fwd_varlen.py: TileLang implementation with variable sequence lengths
  * example_triton_nsa_fwd_varlen.py: Triton implementation with variable sequence lengths
- Update reference.py to support variable-length sparse attention scenarios
- Enhance existing sparse attention implementations to handle variable-length inputs
- Add comprehensive testing and validation for variable-length sparse attention

* Refactor Native Sparse Attention Examples: Code Style and Formatting Improvements

- Standardize function and parameter formatting across NSA example files
- Improve code readability by adjusting indentation and line breaks
- Enhance type hints and parameter alignment
- Remove unnecessary whitespaces and optimize imports
- Maintain consistent code style across TileLang and Triton implementations

It's slightly faster than T.copy then RS-GEMM, and simpler.

* [Refactor] Update BitBLAS Benchmark with TileLang Carver Imports and Roller Hints Generation

- Replace BitBLAS imports with TileLang Carver imports in benchmark_matmul.py
- Modify roller hints generation using new TileLang Carver template and utility functions
- Update get_roller_hints_from_func to handle None cases and improve return logic
- Adjust DefaultPolicy to handle different codegen dictionary formats

* [Refactor] Update Thread Binding and Import Statements in TileLang Kernels

- Replace T.thread_binding() with T.get_thread_binding() across multiple kernel test files
- Update import statements for MMA layout and macro generator in dequantize GEMM and FP8 examples
- Move map_torch_type utility function to tilelang.utils.tensor
- Remove unnecessary imports and improve code organization

* Refactor Native Sparse Attention Example with Enhanced Triton Kernel

- Update parallel_nsa_fwd_kernel to support more flexible sparse attention computation
- Add support for block counts and offsets in the Triton kernel
- Modify kernel grid and computation logic for improved performance
- Update example script to use naive_nsa_simple reference implementation
- Improve type hints and kernel configuration

* Add Native Sparse Attention Examples with Tilelang and Triton Implementations

- Introduce new example scripts for native sparse attention:
  * example_tilelang_nsa_fwd.py: Forward pass implementation using TileLang
  * example_tilelang_nsa_decode.py: Decoding-specific sparse attention implementation
  * example_triton_nsa_fwd.py: Triton-based sparse attention forward pass
- Update reference.py with naive implementations for sparse attention
- Support different sparse attention scenarios including forward pass and inference
- Add comprehensive testing and validation against reference implementations

* lint fix

* [Refactor] Update BitBLAS Benchmark with TileLang Carver Imports and Roller Hints Generation

- Replace BitBLAS imports with TileLang Carver imports in benchmark_matmul.py
- Modify roller hints generation using new TileLang Carver template and utility functions
- Update get_roller_hints_from_func to handle None cases and improve return logic
- Adjust DefaultPolicy to handle different codegen dictionary formats

* [Refactor] Update Thread Binding and Import Statements in TileLang Kernels

- Replace T.thread_binding() with T.get_thread_binding() across multiple kernel test files
- Update import statements for MMA layout and macro generator in dequantize GEMM and FP8 examples
- Move map_torch_type utility function to tilelang.utils.tensor
- Remove unnecessary imports and improve code organization

* Refactor Native Sparse Attention Example with Enhanced Triton Kernel

- Update parallel_nsa_fwd_kernel to support more flexible sparse attention computation
- Add support for block counts and offsets in the Triton kernel
- Modify kernel grid and computation logic for improved performance
- Update example script to use naive_nsa_simple reference implementation
- Improve type hints and kernel configuration

* [Refactor] Update BitBLAS Benchmark with TileLang Carver Imports and Roller Hints Generation

- Replace BitBLAS imports with TileLang Carver imports in benchmark_matmul.py
- Modify roller hints generation using new TileLang Carver template and utility functions
- Update get_roller_hints_from_func to handle None cases and improve return logic
- Adjust DefaultPolicy to handle different codegen dictionary formats

* [Refactor] Update Thread Binding and Import Statements in TileLang Kernels

- Replace T.thread_binding() with T.get_thread_binding() across multiple kernel test files
- Update import statements for MMA layout and macro generator in dequantize GEMM and FP8 examples
- Move map_torch_type utility function to tilelang.utils.tensor
- Remove unnecessary imports and improve code organization

Simplify the control flow in the MLA decode kernel by replacing TileLang's T.If construct with a standard Python if statement. This change improves code readability and maintains the existing logic for handling sequence length constraints during block-wise computation.

* [Dev] Adjust computation logic to avoid precision loss when casting acc_s from float to float16

- Remove redundant `acc_s_0` fragment in flash attention kernel
- Simplify memory copy and reduction operations
- Reorder memory copy and scaling steps for improved performance
- Add Hopper-specific synchronization method in CUDA reduce template
- Update reduce operation to use architecture-specific synchronization

* [Dev] Add DeepSeek MLA Decoding (Paged+Varlen) kernel and Performance Benchmark Script

- Implement comprehensive MLA (Multi-Head Latent Attention) decoding benchmark script
- Add support for multiple implementations: Torch, TileLang, FlashMLA, FlashInfer, and Triton
- Create flexible configuration for benchmarking different batch sizes, sequence lengths, and head configurations
- Implement performance comparison and CSV output for detailed performance analysis
- Add command-line argument support for targeted benchmarking and comparison

* [Dev] Refactor MLA Paged Decoding Kernel with Improved Block Handling and Precision

- Replace `d` parameter with `dv` to clarify value dimension in MLA decoding
- Enhance block distribution logic for split KV processing
- Improve handling of remaining blocks in split KV computation
- Add initialization of `lse_max_local` to prevent potential precision issues
- Optimize block start and range calculations for more accurate sequence processing

* lint

* Change default log level from WARNING to INFO in TileLang initialization

* Refactor Flash Attention Variable-Length MHA Example with Cython Backend Support

- Update `example_mha_fwd_varlen.py` to use Cython backend for kernel compilation
- Remove unused imports and simplify function signature
- Modify `flashattn` function to handle max sequence length as a separate argument
- Update kernel call to include max sequence length parameter
- Improve code readability and remove commented-out code
- Add print statement to confirm successful assertion

* Refactor code formatting in TileLang lowering and example files

- Improve line breaks and code formatting in `lower.py`, `wrapper.py`, and `tensor.py`
- Simplify line breaks and reduce unnecessary whitespace
- Enhance code readability by adjusting indentation and line breaks
- Update example MHA forward pass script with cleaner tensor initialization

* Update TileLang kernel test with import path changes for MMA layout and macro generator

- Modify import statements in test_tilelang_kernel_dequantize_gemm.py
- Replace bitblas imports with tilelang.intrinsics imports for MMA-related utilities
- Update main function to use tilelang.testing.main()

* Add Block Sparse Attention Examples for TileLang and Triton

- Implement block sparse attention kernels for both TileLang and Triton
- Add utility functions for generating sparse attention masks using top-k and threshold methods
- Support causal and variable-length attention scenarios
- Include test cases for different sequence length configurations
- Demonstrate block-level sparse attention with configurable parameters

* Refactor Block Sparse Attention Examples with Code Style Improvements

- Improve code formatting in block_sparse_attn_tilelang.py and block_sparse_attn_triton.py
- Enhance readability by adjusting line breaks and indentation
- Simplify kernel and function calls with better formatting
- Add whitespace and line break improvements for better code clarity

* Enhance Layout Plotting with Multi-Replication and Dynamic Visualization

- Update plot_layout function to support multiple replications in thread and value mapping
- Improve thread and value mapping to handle replicated layouts
- Dynamically adjust figure size and legend positioning
- Add print statements for saved plot file paths
- Modify example fragment_mma_load_a.py to uncomment and enable warp and block layout plotting

* Refactor AtomicAdd functions in CUDA common header

- Implement a generic template for AtomicAdd function
- Specialize templates for half_t, bfloat16_t, and pointer types
- Reorganize and clean up existing AtomicAdd implementations
- Improve type handling and conversion in atomic operations

* Remove unused import in MHA backward test file

- Remove unnecessary argparse import from test_tilelang_kenrel_mha_bwd.py
- Add blank line for improved code formatting
- Minor code cleanup in test file

* Add FP8 GEMM Example with TensorCore Intrinsics

- Implement a new example for FP8 matrix multiplication using TensorCore intrinsics
- Support E4M3 and E5M2 floating-point 8-bit data types
- Add README with notes on current FP8 implementation limitations
- Include correctness test for FP8 GEMM with different configurations
- Demonstrate swizzle layout and pipeline optimizations for FP8 computation

[Dev] Adjust computation logic to avoid precision loss when casting acc_s from float to float16 (#141)

- Remove redundant `acc_s_0` fragment in flash attention kernel
- Simplify memory copy and reduction operations
- Reorder memory copy and scaling steps for improved performance
- Add Hopper-specific synchronization method in CUDA reduce template
- Update reduce operation to use architecture-specific synchronization

- Add non-split flash attention macro for more flexible kernel generation
- Implement `main_no_split` function to handle single-split scenarios
- Modify kernel selection logic to dynamically choose between split and non-split implementations

- Update news and MLA performance benchmark in README.md
- Move performance benchmark and layout images to a dedicated 'figures' directory
- Improve code formatting and image references in documentation

* Change default log level from WARNING to INFO in TileLang initialization

* Refactor Flash Attention Variable-Length MHA Example with Cython Backend Support

- Update `example_mha_fwd_varlen.py` to use Cython backend for kernel compilation
- Remove unused imports and simplify function signature
- Modify `flashattn` function to handle max sequence length as a separate argument
- Update kernel call to include max sequence length parameter
- Improve code readability and remove commented-out code
- Add print statement to confirm successful assertion

* Refactor code formatting in TileLang lowering and example files

- Improve line breaks and code formatting in `lower.py`, `wrapper.py`, and `tensor.py`
- Simplify line breaks and reduce unnecessary whitespace
- Enhance code readability by adjusting indentation and line breaks
- Update example MHA forward pass script with cleaner tensor initialization

* Update TileLang kernel test with import path changes for MMA layout and macro generator

- Modify import statements in test_tilelang_kernel_dequantize_gemm.py
- Replace bitblas imports with tilelang.intrinsics imports for MMA-related utilities
- Update main function to use tilelang.testing.main()

* Add Block Sparse Attention Examples for TileLang and Triton

- Implement block sparse attention kernels for both TileLang and Triton
- Add utility functions for generating sparse attention masks using top-k and threshold methods
- Support causal and variable-length attention scenarios
- Include test cases for different sequence length configurations
- Demonstrate block-level sparse attention with configurable parameters

* Refactor Block Sparse Attention Examples with Code Style Improvements

- Improve code formatting in block_sparse_attn_tilelang.py and block_sparse_attn_triton.py
- Enhance readability by adjusting line breaks and indentation
- Simplify kernel and function calls with better formatting
- Add whitespace and line break improvements for better code clarity

* Enhance Layout Plotting with Multi-Replication and Dynamic Visualization

- Update plot_layout function to support multiple replications in thread and value mapping
- Improve thread and value mapping to handle replicated layouts
- Dynamically adjust figure size and legend positioning
- Add print statements for saved plot file paths
- Modify example fragment_mma_load_a.py to uncomment and enable warp and block layout plotting

* [Dev] Add RetNet Linear Attention example

* [Dev] Add WgmmaSync rewriter for pipelined WGMMA operations and add MHA WGMMA pipelined example (FA3-like scheduling)

This commit introduces a new transformation pass `RewriteWgmmaSync` to optimize warp group matrix multiply accumulate (WGMMA) operations in the TileLang compiler:

- Implemented `WgmmaSyncRewriter` in `src/transform/wgmma_sync_rewriter.cc`
- Added pass registration for `RewriteWgmmaSync`
- Updated `tilelang/engine/phase.py` to include the new transformation pass
- Updated `tilelang/transform/__init__.py` to expose the new pass

The rewriter intelligently manages synchronization and dependencies between WGMMA operations, improving pipeline efficiency for complex matrix multiplication kernels.

* [Bugfix] Fix bug in ThreadTagChecker for warp specialization

Improve thread tag validation in warp specialized rewriter to prevent unintended transformations:
- Add more precise checks for threadIdx.y and threadIdx.z
- Validate thread extent to ensure only single-extent thread bindings are allowed
- Prevent warp specialization for multi-extent thread bindings in y and z dimensions

* lint

* [CI] Add TMA descriptor attribute to transformed module in test case

* [Dev] Refactor DeepSeek MLA Decode Example with Non-Split and Split Flash Attention Implementations

- Add new `flash_attn` macro for non-split flash attention implementation
- Add swizzled layout for tile in shared memory
- Use threadblock swizzle to imporve L2 cache hit rate

* [Dev] Add DeepSeek MLA Decode Example with Documentation and Performance Benchmarks

- Add detailed README.md explaining MLA (Multi-Head Latent Attention) implementation
- Include performance benchmark images for batch sizes 64 and 128
- Add layout visualization images for QK and PV operations
- Implement torch reference implementations in torch_refs.py
- Update example_mla_decode.py with command-line argument support and flexible configuration
- Add performance benchmarking and comparison with other implementations

* Change default log level from WARNING to INFO in TileLang initialization

* Refactor Flash Attention Variable-Length MHA Example with Cython Backend Support

- Update `example_mha_fwd_varlen.py` to use Cython backend for kernel compilation
- Remove unused imports and simplify function signature
- Modify `flashattn` function to handle max sequence length as a separate argument
- Update kernel call to include max sequence length parameter
- Improve code readability and remove commented-out code
- Add print statement to confirm successful assertion

* Refactor code formatting in TileLang lowering and example files

- Improve line breaks and code formatting in `lower.py`, `wrapper.py`, and `tensor.py`
- Simplify line breaks and reduce unnecessary whitespace
- Enhance code readability by adjusting indentation and line breaks
- Update example MHA forward pass script with cleaner tensor initialization

* Update TileLang kernel test with import path changes for MMA layout and macro generator

- Modify import statements in test_tilelang_kernel_dequantize_gemm.py
- Replace bitblas imports with tilelang.intrinsics imports for MMA-related utilities
- Update main function to use tilelang.testing.main()

* Add Block Sparse Attention Examples for TileLang and Triton

- Implement block sparse attention kernels for both TileLang and Triton
- Add utility functions for generating sparse attention masks using top-k and threshold methods
- Support causal and variable-length attention scenarios
- Include test cases for different sequence length configurations
- Demonstrate block-level sparse attention with configurable parameters

* Refactor Block Sparse Attention Examples with Code Style Improvements

- Improve code formatting in block_sparse_attn_tilelang.py and block_sparse_attn_triton.py
- Enhance readability by adjusting line breaks and indentation
- Simplify kernel and function calls with better formatting
- Add whitespace and line break improvements for better code clarity

* Change default log level from WARNING to INFO in TileLang initialization

* Refactor Flash Attention Variable-Length MHA Example with Cython Backend Support

- Update `example_mha_fwd_varlen.py` to use Cython backend for kernel compilation
- Remove unused imports and simplify function signature
- Modify `flashattn` function to handle max sequence length as a separate argument
- Update kernel call to include max sequence length parameter
- Improve code readability and remove commented-out code
- Add print statement to confirm successful assertion

* Refactor code formatting in TileLang lowering and example files

- Improve line breaks and code formatting in `lower.py`, `wrapper.py`, and `tensor.py`
- Simplify line breaks and reduce unnecessary whitespace
- Enhance code readability by adjusting indentation and line breaks
- Update example MHA forward pass script with cleaner tensor initialization

* Add DeepSeek MLA decode example with Flash Attention implementation

* Add GEMM SplitK and StreamK example implementations

This commit introduces two new example scripts demonstrating advanced GEMM (matrix multiplication) techniques:
- `example_tilelang_gemm_splitk.py`: Implements a Split-K GEMM kernel using TileLang
- `example_tilelang_gemm_streamk.py`: Implements a Stream-K GEMM kernel using TileLang

Both examples showcase different parallel computation strategies for matrix multiplication, with comprehensive testing using PyTorch reference implementations.

* Refactor GEMM SplitK and StreamK example implementations

Clean up and improve code formatting for the SplitK and StreamK GEMM example scripts:
- Remove unused import (Profiler) in splitk example
- Simplify line breaks and improve code readability
- Standardize indentation and remove unnecessary whitespace
- Optimize atomic add and copy operations for better clarity

* Add block sparse attention benchmarks for multiple libraries

This commit introduces comprehensive block sparse attention benchmarks for different libraries:
- TileLang block sparse FMHA implementation
- Triton block sparse FMHA implementation
- PyTorch reference block sparse FMHA implementation
- FlashAttention dense FMHA reference implementation

The benchmarks include:
- Configurable benchmark parameters (batch size, heads, sequence length, etc.)
- Sparse mask generation using top-k and threshold methods
- Performance measurement for different sparse attention configurations
- Utility functions for mask generation and benchmarking

* Refactor block sparse attention benchmarks with code style improvements

- Add Ruff linter ignore comments to benchmark files
- Improve code formatting and line breaks
- Remove unused imports
- Standardize print statement formatting
- Enhance code readability across multiple library benchmarks

* lint fix

* Add CUDA atomic operations for BFLOAT16 and update function naming

- Implement AtomicAdd functions for BFLOAT16 and BFLOAT16x2 in CUDA common header
- Rename existing atomic add functions to use PascalCase (atomicAdd -> AtomicAdd)
- Add a new __pack_nv_bfloat162 function for packing BFLOAT16 values
- Update kernel and language customization to use new function names
- Add return type annotations in profiler module

* lint fix

* Add example for Group Query Attention (GQA) forward pass using Flash Attention in TileLang

This commit introduces a new example script `example_gqa_fwd_bshd.py` that demonstrates:
- Group Query Attention (GQA) implementation
- Flash Attention forward pass
- Performance benchmarking
- Configurable parameters for batch, heads, sequence length, and dimension
- Autotuning support
- Reference implementation comparison

* Refactor IR lowering pipeline into modular phases

This commit introduces a new module `phase.py` to modularize the IR lowering process by splitting the complex lowering pipeline into two distinct phases:
- `LowerAndLegalize`: Handles initial IR legalization and transformation
- `OptimizeForTarget`: Applies target-specific optimizations

The changes simplify the lowering logic in multiple files by extracting the transformation steps into reusable functions, improving code readability and maintainability.

* lintfix

* nas kernel

* Enhance Native Sparse Attention Examples with Code Improvements and Parameter Updates

- Updated example_tilelang_nsa.py and example_triton_nsa.py with code formatting and style improvements
- Increased default number of heads and selected blocks in TileLang NSA example
- Added Ruff linter ignore comments to reference.py
- Standardized function signatures and improved code readability across NSA implementations

* Add utility math functions for integer operations

- Implement `next_power_of_2()` to calculate the next power of 2 for an integer
- Add `cdiv()` function for ceiling division of integers

* Add utility math functions for integer operations

- Implement `next_power_of_2()` to calculate the next power of 2 for an integer
- Add `cdiv()` function for ceiling division of integers

* Refactor DeepSeek MLA Decode Example with Enhanced Flash Attention Implementation

- Update flash attention kernel to support positional embeddings (PE)
- Modify reference implementation to handle PE and group query attention
- Increase default batch size and adjust benchmarking parameters
- Improve kernel performance and readability
- Add einops and torch operations for more flexible tensor manipulation

* Update README.md with corrected Flash MLA Decoding example path

- Modify the example link for Flash MLA Decoding to point to the correct directory
- Ensure accurate navigation to the DeepSeek MLA decoding example

* Refactor Native Sparse Attention Kernel and Improve Utility Functions

This commit introduces several improvements:
- Simplified native sparse attention kernel by inlining macro functions in example_tilelang_nsa.py
- Enhanced error handling in loop_partition.cc with more informative error messages
- Updated print.py to support multi-dimensional buffer printing
- Improved torch_assert_close in testing/__init__.py with more detailed mismatch reporting
- Reduced default absolute tolerance in torch comparison from 1e-3 to 1e-2
- Added shape validation and detailed mismatch information in tensor comparison

* Refactor Code Formatting and Improve Utility Functions

This commit introduces several code formatting and utility improvements:
- Add Ruff linter ignore comment in example_tilelang_nsa.py
- Enhance code readability in loop_partition.cc and lower_tile_op.cc with improved line breaks
- Simplify print_flat_buffer_with_condition in print.py
- Refactor torch_assert_close in testing/__init__.py with improved line formatting

* Enhance Buffer Printing Support for Fragment and Shared Memory Buffers

This commit improves the print functionality in print.py by:
- Adding support for printing fragment memory buffers
- Implementing a new print_fragment_buffer_with_condition macro
- Extending print_shared_buffer_with_condition for shared memory buffers
- Updating the generic print function to handle different buffer scopes

* Resolve merge conflict in print.py

Remove merge conflict marker and clean up whitespace in the print module

* Add Variable-Length Multi-Head Attention (MHA) Example with Flash Attention Support

Introduce a new example script `example_mha_fwd_varlen.py` that demonstrates:
- Variable-length Multi-Head Attention (MHA) implementation
- Flash Attention forward pass with padding mask support
- Performance benchmarking for variable-length sequences
- Configurable parameters for batch, heads, sequence length, and dimension
- Reference implementation comparison with PyTorch and FlashAttention

* Refactor Flash Attention Variable-Length MHA Example

Improve code formatting and readability in the variable-length multi-head attention example:
- Add Ruff linter ignore comment
- Enhance code style with consistent formatting
- Remove unused imports
- Improve line breaks and indentation
- Simplify function signatures and lambda expressions

* Add DeepSeek MLA decode example with Flash Attention implementation

* Add GEMM SplitK and StreamK example implementations

This commit introduces two new example scripts demonstrating advanced GEMM (matrix multiplication) techniques:
- `example_tilelang_gemm_splitk.py`: Implements a Split-K GEMM kernel using TileLang
- `example_tilelang_gemm_streamk.py`: Implements a Stream-K GEMM kernel using TileLang

Both examples showcase different parallel computation strategies for matrix multiplication, with comprehensive testing using PyTorch reference implementations.

* Refactor GEMM SplitK and StreamK example implementations

Clean up and improve code formatting for the SplitK and StreamK GEMM example scripts:
- Remove unused import (Profiler) in splitk example
- Simplify line breaks and improve code readability
- Standardize indentation and remove unnecessary whitespace
- Optimize atomic add and copy operations for better clarity

* Add block sparse attention benchmarks for multiple libraries

This commit introduces comprehensive block sparse attention benchmarks for different libraries:
- TileLang block sparse FMHA implementation
- Triton block sparse FMHA implementation
- PyTorch reference block sparse FMHA implementation
- FlashAttention dense FMHA reference implementation

The benchmarks include:
- Configurable benchmark parameters (batch size, heads, sequence length, etc.)
- Sparse mask generation using top-k and threshold methods
- Performance measurement for different sparse attention configurations
- Utility functions for mask generation and benchmarking

* Refactor block sparse attention benchmarks with code style improvements

- Add Ruff linter ignore comments to benchmark files
- Improve code formatting and line breaks
- Remove unused imports
- Standardize print statement formatting
- Enhance code readability across multiple library benchmarks

* lint fix

* Add CUDA atomic operations for BFLOAT16 and update function naming

- Implement AtomicAdd functions for BFLOAT16 and BFLOAT16x2 in CUDA common header
- Rename existing atomic add functions to use PascalCase (atomicAdd -> AtomicAdd)
- Add a new __pack_nv_bfloat162 function for packing BFLOAT16 values
- Update kernel and language customization to use new function names
- Add return type annotations in profiler module

* lint fix

* Add example for Group Query Attention (GQA) forward pass using Flash Attention in TileLang

This commit introduces a new example script `example_gqa_fwd_bshd.py` that demonstrates:
- Group Query Attention (GQA) implementation
- Flash Attention forward pass
- Performance benchmarking
- Configurable parameters for batch, heads, sequence length, and dimension
- Autotuning support
- Reference implementation comparison

* Refactor IR lowering pipeline into modular phases

This commit introduces a new module `phase.py` to modularize the IR lowering process by splitting the complex lowering pipeline into two distinct phases:
- `LowerAndLegalize`: Handles initial IR legalization and transformation
- `OptimizeForTarget`: Applies target-specific optimizations

The changes simplify the lowering logic in multiple files by extracting the transformation steps into reusable functions, improving code readability and maintainability.

* lintfix

* nas kernel

* Enhance Native Sparse Attention Examples with Code Improvements and Parameter Updates

- Updated example_tilelang_nsa.py and example_triton_nsa.py with code formatting and style improvements
- Increased default number of heads and selected blocks in TileLang NSA example
- Added Ruff linter ignore comments to reference.py
- Standardized function signatures and improved code readability across NSA implementations

* Add utility math functions for integer operations

- Implement `next_power_of_2()` to calculate the next power of 2 for an integer
- Add `cdiv()` function for ceiling division of integers

* Add utility math functions for integer operations

- Implement `next_power_of_2()` to calculate the next power of 2 for an integer
- Add `cdiv()` function for ceiling division of integers

* Refactor DeepSeek MLA Decode Example with Enhanced Flash Attention Implementation

- Update flash attention kernel to support positional embeddings (PE)
- Modify reference implementation to handle PE and group query attention
- Increase default batch size and adjust benchmarking parameters
- Improve kernel performance and readability
- Add einops and torch operations for more flexible tensor manipulation

* Update README.md with corrected Flash MLA Decoding example path

- Modify the example link for Flash MLA Decoding to point to the correct directory
- Ensure accurate navigation to the DeepSeek MLA decoding example

* Refactor Native Sparse Attention Kernel and Improve Utility Functions

This commit introduces several improvements:
- Simplified native sparse attention kernel by inlining macro functions in example_tilelang_nsa.py
- Enhanced error handling in loop_partition.cc with more informative error messages
- Updated print.py to support multi-dimensional buffer printing
- Improved torch_assert_close in testing/__init__.py with more detailed mismatch reporting
- Reduced default absolute tolerance in torch comparison from 1e-3 to 1e-2
- Added shape validation and detailed mismatch information in tensor comparison

* Refactor Code Formatting and Improve Utility Functions

This commit introduces several code formatting and utility improvements:
- Add Ruff linter ignore comment in example_tilelang_nsa.py
- Enhance code readability in loop_partition.cc and lower_tile_op.cc with improved line breaks
- Simplify print_flat_buffer_with_condition in print.py
- Refactor torch_assert_close in testing/__init__.py with improved line formatting

[Dev][Bugfix] Fix bug in ThreadTagChecker; Add WgmmaSync rewriter and add MHA WGMMA pipelined example (#128)

* [Dev] Add RetNet Linear Attention example

* [Dev] Add WgmmaSync rewriter for pipelined WGMMA operations and add MHA WGMMA pipelined example (FA3-like scheduling)

This commit introduces a new transformation pass `RewriteWgmmaSync` to optimize warp group matrix multiply accumulate (WGMMA) operations in the TileLang compiler:

- Implemented `WgmmaSyncRewriter` in `src/transform/wgmma_sync_rewriter.cc`
- Added pass registration for `RewriteWgmmaSync`
- Updated `tilelang/engine/phase.py` to include the new transformation pass
- Updated `tilelang/transform/__init__.py` to expose the new pass

The rewriter intelligently manages synchronization and dependencies between WGMMA operations, improving pipeline efficiency for complex matrix multiplication kernels.

* [Bugfix] Fix bug in ThreadTagChecker for warp specialization

Improve thread tag validation in warp specialized rewriter to prevent unintended transformations:
- Add more precise checks for threadIdx.y and threadIdx.z
- Validate thread extent to ensure only single-extent thread bindings are allowed
- Prevent warp specialization for multi-extent thread bindings in y and z dimensions

* lint

* [CI] Add TMA descriptor attribute to transformed module in test case