I am trying to test 4 Tesla GPUS all at the same time. I am using CUDA 11, Driver version 450.51.06 on Ubuntu 20.04.
I am using a superMicro X11 motherboard. This is the command I use to start nbody :
./nbody -benchmark -numdevices=2 -numbodies=100000
When I check nvdia-smi, After about 5 mins the Cards 2 and 3 drop out of the test and show 0% usage.
Does any one have any idea why it does that ? Any help would be appreciated. Let me know if I missed something.