Reduction kernel slow and unstable?

Discussion created by the729 on Oct 10, 2008
Latest reply on Oct 10, 2008 by MicahVillmow

Reduction kernels runs very slow on my system.

I simply tried the sample reduction code with default size (64x64) and got the result:

Width   Height  Iterations      GPU Total Time 
64      64      1               1.781000

And I got segment fault when I try './reduction -i 2 -t'.

I wonder if the segment-fault problem is also related to the second-iteration problem I just posted.