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2ce5f12513
* Again set a few extra params. * Use the appropriate kernel sizes. * Add all the kernel sizes. * Parallel compiling. * Reduce the amount of parallelism. * Add the missing kernel. * Fix a typo. * Remove bf16 support for now.
26 lines
1.4 KiB
Plaintext
26 lines
1.4 KiB
Plaintext
// Copyright (c) 2023, Tri Dao.
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// Splitting the different head dimensions to different files to speed up compilation.
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#include "flash_fwd_launch_template.h"
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// template<>
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// void run_mha_fwd_<cutlass::half_t, 64>(Flash_fwd_params ¶ms, cudaStream_t stream) {
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// using elem_type = cutlass::half_t;
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// if (params.p_dropout == 1.f) {
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// // Using 8 warps is 18% slower for seqlen=2k, 2 warps is 5% slower
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// // Using block size (64 x 256) is 27% slower for seqlen=2k
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// // Using block size (256 x 64) is 85% slower for seqlen=2k, because of register spilling
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// run_flash_fwd<Flash_fwd_kernel_traits<64, 128, 128, 4, false, false, elem_type>, false>(params, stream);
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// run_flash_fwd<Flash_fwd_kernel_traits<64, 128, 64, 4, true, false, elem_type>, false>(params, stream);
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// run_flash_fwd<Flash_fwd_kernel_traits<64, 128, 64, 4, true, true, elem_type>, false>(params, stream);
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// } else {
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// run_flash_fwd<Flash_fwd_kernel_traits<64, 128, 64, 4, false, false, elem_type>, true>(params, stream);
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// run_flash_fwd<Flash_fwd_kernel_traits<64, 128, 64, 4, true, true, elem_type>, true>(params, stream);
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// run_flash_fwd<Flash_fwd_kernel_traits<64, 128, 64, 4, true, false, elem_type>, true>(params, stream);
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// }
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// }
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template<>
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void run_mha_fwd_<cutlass::half_t, 64>(Flash_fwd_params ¶ms, cudaStream_t stream) {
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run_mha_fwd_hdim64<cutlass::half_t>(params, stream);
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} |