[Bf-blender-cvs] [55e4454] master: Cycles CUDA: use fewer registers for sm_50 cards for better performance.

[Brecht Van Lommel]

Commit: 55e4454db8edac58c3d64271d84263e5bb5e9c29
Author: Brecht Van Lommel
Date:   Tue May 27 15:09:00 2014 +0200
https://developer.blender.org/rB55e4454db8edac58c3d64271d84263e5bb5e9c29

Cycles CUDA: use fewer registers for sm_50 cards for better performance.

===================================================================

M	intern/cycles/kernel/kernel.cu

===================================================================

diff --git a/intern/cycles/kernel/kernel.cu b/intern/cycles/kernel/kernel.cu
index bb20819..69c2600 100644
--- a/intern/cycles/kernel/kernel.cu
+++ b/intern/cycles/kernel/kernel.cu
@@ -61,7 +61,7 @@
 
 /* tunable parameters */
 #define CUDA_THREADS_BLOCK_WIDTH 16
-#define CUDA_KERNEL_MAX_REGISTERS 63
+#define CUDA_KERNEL_MAX_REGISTERS 40
 #define CUDA_KERNEL_BRANCHED_MAX_REGISTERS 63
 
 /* unknown architecture */