diff options
Diffstat (limited to 'intern/cycles/kernel/kernels/cuda/kernel_config.h')
| -rw-r--r-- | intern/cycles/kernel/kernels/cuda/kernel_config.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/intern/cycles/kernel/kernels/cuda/kernel_config.h b/intern/cycles/kernel/kernels/cuda/kernel_config.h index 7ae205b7e14..94f59ff38d9 100644 --- a/intern/cycles/kernel/kernels/cuda/kernel_config.h +++ b/intern/cycles/kernel/kernels/cuda/kernel_config.h @@ -73,9 +73,15 @@ /* tunable parameters */ # define CUDA_THREADS_BLOCK_WIDTH 16 -# define CUDA_KERNEL_MAX_REGISTERS 48 +/* CUDA 9.0 seems to cause slowdowns on high-end Pascal cards unless we increase the number of registers */ +# if __CUDACC_VER_MAJOR__ == 9 && __CUDA_ARCH__ >= 600 +# define CUDA_KERNEL_MAX_REGISTERS 64 +# else +# define CUDA_KERNEL_MAX_REGISTERS 48 +# endif # define CUDA_KERNEL_BRANCHED_MAX_REGISTERS 63 + /* unknown architecture */ #else # error "Unknown or unsupported CUDA architecture, can't determine launch bounds" |