Re: [OMPI users] Horovod Performance with OpenMPI

2025-06-04 Thread 'George Bosilca' via Open MPI users
Please ignore my prior answer, I just noticed you are running single-node. In addition to Howard's suggestions, check if you have nvlink between GPUs. George. On Wed, Jun 4, 2025 at 10:11 AM George Bosilca wrote: > What's the network on your cluster ? Without a very good network you > canno

Re: [EXTERNAL] Re: [OMPI users] Horovod Performance with OpenMPI

2025-06-04 Thread 'Pritchard Jr., Howard' via Open MPI users
" Subject: [EXTERNAL] Re: [OMPI users] Horovod Performance with OpenMPI What's the network on your cluster ? Without a very good network you cannot obtain anything closer to the single GPU, because the data exchanged between the two GPUs will become the bottleneck. George. On Wed, J

Re: [OMPI users] Horovod Performance with OpenMPI

2025-06-04 Thread 'George Bosilca' via Open MPI users
What's the network on your cluster ? Without a very good network you cannot obtain anything closer to the single GPU, because the data exchanged between the two GPUs will become the bottleneck. George. On Wed, Jun 4, 2025 at 5:56 AM Shruti Sharma wrote: > Hi > I am currently running Horovod