WeeklyTelcon_20240730

Open MPI Weekly Telecon

C11 related: https://github.com/open-mpi/ompi/pull/12660
- Attendees have a consensus that we want to require C11 on main branch, and as a result RHEL 7 with the default GCC will not be supported. The user must upgrade their GCC or switch to a different OS with newer GCC.
- In order to avoid surprised, we would like to send out a notice in advance.
Large-count topic: datatype engine https://github.com/open-mpi/ompi/pull/12351
- While we want to support the large count APIs, we do not expect real applications to use UINT64_MAX counts.
- We want to be careful with changing internal data structures, e.g. ABI compatibility, cacheline alignment, etc.
- Will continue the discussion offline. Should schedule a separate call to discuss.
OFI accelerator topic: NIC selection https://github.com/open-mpi/ompi/pull/11716
- Thomas(ORNL) is interested in testing out the feature.
~~accelerator topic: ZE support question~~
mca parameter aliasing across projects (instead of components)
- This is a continued discussion from slack. The issue was exposed in https://github.com/open-mpi/ompi/issues/12682. It is a release blocker for 5.0.6.
- Accelerator framework also missed MCA parameter naming, see #12721