v11: Updates for Intel MPI at NAS #771
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Testing is currently underway to perhaps move to Intel MPI at NAS due to issues running v12 with Ops emissions. With MPT, it fails with: ``` MPT ERROR: Cannot create more than 2048 RMA windows. ``` and per NAS support, that is a hard limit compiled into MPT. So, Intel MPI. And in doing so, it seems the flags we use at NCCS are good at NAS (in testing, so far). Note: While this is not (currently) happening in v11, I want to capture the changes in case it does. Plus, we might move to Intel MPI for simplicity.
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sdrabenh
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Oct 20, 2025
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Testing is currently underway to perhaps move to Intel MPI at NAS due to issues running v12 with Ops emissions. With MPT, it fails with:
and per NAS support, that is a hard limit compiled into MPT.
So, Intel MPI. And in doing so, it seems the flags we use at NCCS are good at NAS (in testing, so far).
Note: While this is not (currently) happening in v11, I want to capture the changes in case it does. Plus, we might move to Intel MPI for simplicity.