Hi, I’m new to CUDA, and I design a test of mine today, to test if it can ran multiple threads or processes to share only one GPU, but while the threads number is up to 8, it seems very unstable, I mean 8 threads share only one GPU device. Sometimes the copy of memory from device back to host failed, sometimes it hung my computer!
this problem also happened when I ran multiple processes which use CUDA to do some calculations, of course, I have only one GPU card!
I wrote my test in one doc word file, which described my test design and the problem output. Please read it if you have time and willing to help me :-) Thanks a lot! [attachment=4722:attachment][/b]
Anybody can provide some suggestions on these usage?
My system is notebook with 8600GM, 256MB video memory, Redhat Enterprise Linux 5.
CUDATest.doc (208 KB)