MPI+CUDA+Windows no cuda capable device when starting with mpiexec

Accelerated Computing CUDA CUDA Programming and Performance
1

HI,

when I start a parallel program with mpiexec on windows, I don’t have a cuda capable device. If I start the program (running 1 process) itself, I have cuda devices.
on linux everything is fine. I have mpich2 on windows. Do I need the TCC driver for windows ?

Jonas

2

Hi Jonas!

Did you solve the problem?

Kai

3

Seems to be solved by the -localonly flag. See post: MPI+CUDA on Win7

[indent]mpiexec -localonly -n 3 myapp[/indent]

works for a cluster of GTX580s on a UD9.