ERROR: Not enough GPUs on node

Hi all,

I’m new to using CUDA and I’m having some trouble getting it running on my ROCKS 6.2 cluster.

I currently have 4 nodes in the cluster, each with a single GTX745.

When I run ‘run_linpack’ with mpiexec -np 4, I get the following error:

!!! ERROR: Not enough GPUs on node compute-0-0.local, 1 GPUs found, 4 GPUs required !!!

How can I configure the CUDA HPL to run using a single card on each PC? Am I using an incorrect version of HPL for my configuration?


The problem is that you don’t know how to use MPI.

You’ll need to learn how to use MPI to distribute your 4 processes to 4 different nodes in your cluster. This will involve a proper hostfile and other considerations. It has nothing to do with CUDA or HPL.