When I disable OpenMPI CUDA IPC with mca parameters, does OpenMPI still use
GPUDirect RDMA?
Thanks,
Mike Adams
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ut on whether or not those mca
parameters I mentioned yesterday are disabling GPUDirect RDMA as well?
Thank you both for your help!
Mike Adams
On Friday, May 30, 2025 at 11:39:49 AM UTC-6 Mike Adams wrote:
> Dmitry,
>
> I'm not too familiar with the internals of OpenMPI, but I jus
since those parameters cause my
program to succeed on OpenMPI 4.0.5 on PSC Bridges 2, I guess it is not
UCX. Can you point me in the right direction to determine the pml in use?
Thank you for your assistance!
Mike Adams
On Tuesday, June 3, 2025 at 8:03:16 AM UTC-6 Tomislav Janjusic US wrote:
v4.1.x?
Thanks,
Mike Adams
On Friday, May 30, 2025 at 11:21:16 AM UTC-6 Dmitry N. Mikushin wrote:
> There is a relevant explanation of the same issue reported for Julia:
> https://github.com/JuliaGPU/CUDA.jl/issues/1053
>
> пт, 30 мая 2025 г. в 19:05, Mike Adams :
>
Delta - I'll try to test on an older
OpenMPI.
Mike Adams
On Friday, May 30, 2025 at 10:54:23 AM UTC-6 Tomislav Janjusic US wrote:
> Hi,
>
> I'm not sure if it's a known issue, in v4.0 possibly, not sure about v4.1
> or v5.0 - can you try?
> As far as CUDA IPC - how are
