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[JAX] Error checking for mesh resource and update GemmPrimitive to use global_mesh_resource().fsdp_resource (#2088)

* Enforce global MeshResource is set
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* Use global_mesh_resource().fsdp_resource in gemm primitive
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* Update tests
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* Update gemm.py
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* Update test_layer.py
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* Move some dist fused attn tests to L2
1. TestReorderCausalLoadBalancing: Run two (non symmetric) BSHD/SBHD data shape combination
2. TestDistributedSelfAttn: Run only one (smaller) BSHD type data shape combination
3. TestDistributedCrossAttn: Run only one (smaller) BSHD type data shape combination
4. TestDistributedContextParallelSelfAttn: Run all cp1 combinations
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* Use pytest_parametrize_wrapper for splitting fused attn distributed JAX tests as L1 and L2
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* Undo pytest -k split commands in qa scripts
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* Fix usage of pytest_parametrize_wrapper in test_distributed_fused_attn
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* Remove test code for L2 dist residing in L2 test.sh
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* Add comments for code. Swap the test data shapes in REORDER_CAUSAL_LOAD_BALANCING_DATA_SHAPES
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* Add L0 to the data shape dictionaries in the distributed test
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* Code clean up
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* Add L2_jax_distributed_unittest
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* Add L1 entry for NORM_INPUT_SHAPES that was missing
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* rm cudaGraph compatible trait from GroupedGEMM and groupedQuantize
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* add grouped_gemm jitting in the unit test
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* rm batch_dim, sequence_dim, sequence_parallel_output
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* rm lhs_quantized_colwise and rhs_quantized_colwise
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* rm unnecessary transpose_batch_sequence arg from some modules
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* Pytest timings
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* Reduce softmax test shape sizes
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* Switch softmax tests to use shardy by default
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* add manage_primitives() helper

* disable GEMM primitives for non-MXFP8 recipes

* implement the NVTE_JAX_CUSTOM_CALLS + deprecate NVTE_JAX_CUSTOM_CALLS_RE

* replace NVTE_JAX_CUSTOM_CALLS_RE with NVTE_JAX_CUSTOM_CALLS in TE tests and examples

* fix use_jax_gemm contextmanager
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Fix current scaling test_helper.py and enable test_helper.py in L0
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* Fixed conflicts
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* Minor code refactoring to avoid unnecessary checks
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* Fixed typo
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* Fixed dBias accumulation error due to initialization. Minor code refactoring
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* Test case to reproduce the init error
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* Fixed rowwise dbias error
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* Minor corrections
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* Rebased on main
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* Removed constexpr in C++ test suite to build faster
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* Computed activations are now numerically truncated to InputType before scaling. Improved test suite.
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* Minor refactoring
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* Modified mismatches checks of MXFP8 to address FP8 numerics
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* Implemented Jeremy's fixes to JAX test suite with an intermediate downcast
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* Reduced the dims of the test tensors to improve CI runtime
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* Fixed memory alignment issue. Compute dbias without downcast.
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* Fixed misaligned memory issue also in gated kernels. Reduced size of MXFP8 gated tests
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Update tolerance of distributed layernorm MLP for FP8
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* Add experimental Shardy support.

Production use is not yet recommended.

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