GitLab

[PyTorch] FP8 Subchannel Recipe With FP8 Gather And Configurable Scaling Factor Tensor Swizzling (#1707)

* functional kernel for columnwise + no-transpose option, still hacky
Signed-off-by: zhongboz <zhongboz@nvidia.com>

* pass all quantizer unit tests
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* refactor, add gemm ready api
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* make format options private members, simplify api
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* swizzle scales right before gemm
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* bug fix of single layer test
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* attempt to fix lint issue
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* fp8 gather pass, need minor refine
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* fix return_layernorm_output_gathered case
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* remove special cases, add sanity check before gemm
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* fix lint
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* Implement dequantize for compact 1D blocks.
Signed-off-by: Keith Wyss <kwyss@nvidia.com>

* add more unit test with dequantize compact supported
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* lint again
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* make ag for subchannel respect async
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* zero tolerance in distributed test
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* fix zero tolerance test
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* resolve rebase issues
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* lint & format
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* fix lint
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* clean up
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* bug fix
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* relax rtol for fp32 distributed test
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* fix some ci issue
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* fix ci test failure in debug mode
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* Force row-wise and column-wise data to have same data format

Prototype "all-gather usage" in quantizer.
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* Remove dead logic for high-precision AGs
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* Debug FP8 block-wise tensor tests
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* Debug distributed test
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* Handle case where LayerNormLinear returns gathered norm output
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* test thd TELayer
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* add enc_dec_kv for decoder
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* fix cross attn in decoder
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* fix unfused + bshd/sbhd + telayer
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* Quantizer update
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* Introduce _update_weight_quantizers and _get_weight_tensors/_get_weight_quantizers
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* Linear op avoids saving input tensor if weight grad is not needed
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* Linear op forward avoids producing quantized tensors with unnecessary usages
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* More verbose code and comments
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* Use an empty torch tensor to indicate no fp8 information in extra_state
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* Fix split_overlap_rs aggregate=True chunk offset calculation
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* Check tensor-recipe compatibility
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