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[SYCLomatic] Enable migration of CUBLASLT_EPILOGUE_GELU & GELU_AUX #2436

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abhilash1910
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cublasLtEpilogue_t e;
e = CUBLASLT_EPILOGUE_DEFAULT;
e = CUBLASLT_EPILOGUE_RELU;
e = CUBLASLT_EPILOGUE_GELU;
e = CUBLASLT_EPILOGUE_GELU_AUX;
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GELU_AUX is not as same as GELU.
According to CUBLAS doc, GELU_AUX is

Apply GELU point-wise transform to the results (x := GELU(x)). This epilogue mode outputs GELU input as a separate matrix (useful for training). See CUBLASLT_MATMUL_DESC_EPILOGUE_AUX_POINTER of [cublasLtMatmulDescAttributes_t](https://docs.nvidia.com/cuda/cublas/index.html#cublasltmatmuldescattributes-t).

So you need update the implementation to copy the GELU input to EPILOGUE_AUX_POINTER

cublasLtEpilogue_t e;
e = CUBLASLT_EPILOGUE_DEFAULT;
e = CUBLASLT_EPILOGUE_RELU;
e = CUBLASLT_EPILOGUE_GELU;
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OK

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@zhiweij1 zhiweij1 left a comment

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Please update the PR.

@abhilash1910
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Refer to #2460 . Closing this.

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2 participants