ggml: SVE support for exponential functions #15145
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Add const notation to variable pg
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Co-authored-by: Georgi Gerganov <[email protected]>
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* SVE support for exponential functions Add const notation to variable pg * Update ggml/src/ggml-cpu/vec.cpp Co-authored-by: Georgi Gerganov <[email protected]> * Add const --------- Co-authored-by: Georgi Gerganov <[email protected]>
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This reverts commit 078ce23.
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This PR introduces support for SVE(Scalable Vector Extensions) kernels for the exponential on the Arm architecture.
Verifying Features
This PR contains the SVE implementation of the exponential function used to compute the Activation and Softmax functions.
The values of the NEON and SVE implementations were compared sequentially, and it was confirmed that the values always roughly same.
We also verified that the perplexity matches between the NEON and SVE implementations.
performance check
Performance was measured with FX700.
Performance is improved as follows. The value is ggml_vec_soft_max_f32's cycles. (ggml_v_expf symbol is striped by optimization.)
The command used to measure the performance is