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Semantically, lda should be K for a row major matrix with shape (MxK), similarly, ldc should be M for a column major matrix with shape (MxN) #14

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Semantically, lda should be K for a row major matrix with shape (MxK), similarly, ldc should be M for a column major matrix with shape (MxN) #14

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2 changes: 1 addition & 1 deletion matmul.cu
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,7 @@ void runCublasGemmBF16(int M, int N, int K, bf16 *A, bf16 *B, bf16 *C) {
float alpha = 1, beta = 0;
// C(column major) = A(row major) * B(column major)
cublasStatus_t status = cublasGemmEx(cublas_handle, CUBLAS_OP_T, CUBLAS_OP_N, M, N, K, &alpha, A, CUDA_R_16BF,
N, B, CUDA_R_16BF, K, &beta, C, CUDA_R_16BF, N, CUBLAS_COMPUTE_32F, CUBLAS_GEMM_DEFAULT);
K, B, CUDA_R_16BF, K, &beta, C, CUDA_R_16BF, M, CUBLAS_COMPUTE_32F, CUBLAS_GEMM_DEFAULT);

if (status != CUBLAS_STATUS_SUCCESS) {
std::cout << "CUBLAS error: " << status << std::endl;
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