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| author | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2016-06-19 19:06:22 +0300 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2016-06-19 21:17:26 +0300 |
| commit | e26eb9c93bdeae0b52153a7fcf37bceebffd6304 (patch) | |
| tree | 1d84a8bf7fb020e0bc7b1b0243fe38c32299c77f /intern/cycles/kernel/kernels/cuda | |
| parent | 9b618c1a5a523e74a5c8f9b0c55a56c54a2388d7 (diff) | |
Cycles: reduce CUDA stack memory access for Maxwell and up, increasing max registers.
For non-branched path tracing with a GTX 960 and CUDA 7.5, this gives a small reduction
in stack usage but mainly: 8% faster render on BMW, 5% on pabellon, 13% on classroom.
Diffstat (limited to 'intern/cycles/kernel/kernels/cuda')
| -rw-r--r-- | intern/cycles/kernel/kernels/cuda/kernel.cu | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/intern/cycles/kernel/kernels/cuda/kernel.cu b/intern/cycles/kernel/kernels/cuda/kernel.cu index 37fae54faf0..eb2b6ea5414 100644 --- a/intern/cycles/kernel/kernels/cuda/kernel.cu +++ b/intern/cycles/kernel/kernels/cuda/kernel.cu @@ -77,8 +77,8 @@ # define CUDA_KERNEL_MAX_REGISTERS 63 # define CUDA_KERNEL_BRANCHED_MAX_REGISTERS 63 -/* 5.0, 5.2 and 5.3 */ -#elif __CUDA_ARCH__ == 500 || __CUDA_ARCH__ == 520 || __CUDA_ARCH__ == 530 +/* 5.0, 5.2, 5.3, 6.0, 6.1 */ +#elif __CUDA_ARCH__ >= 500 # define CUDA_MULTIPRESSOR_MAX_REGISTERS 65536 # define CUDA_MULTIPROCESSOR_MAX_BLOCKS 32 # define CUDA_BLOCK_MAX_THREADS 1024 @@ -86,7 +86,7 @@ /* tunable parameters */ # define CUDA_THREADS_BLOCK_WIDTH 16 -# define CUDA_KERNEL_MAX_REGISTERS 40 +# define CUDA_KERNEL_MAX_REGISTERS 48 # define CUDA_KERNEL_BRANCHED_MAX_REGISTERS 63 /* unknown architecture */ |