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OpenMPI + UCX fails in MPI_Win_post and works with MPI_fence

12

Dear OpenMPI team, I am having issues wit the RMA part of OpenMPI (v4.1.2) and especially with the `Post-Start-Complete-Wait` synchronization. Our code runs with `ucx` and fails in an assertion...

thomasgillis

The mpirun man page at https://github.com/open-mpi/ompi/blob/main/docs/man-openmpi/man1/mpirun.1.rst has many places where an ```admonition``` is displayed. This is not particularly helpful. Sections with this admonition need to be audited and corrected or...

hppritcha

Performance regression in atmospheric model when using OpenMPI – traced to slow memset

2

When running our atmospheric model in parallel we observe a significant performance drop with OpenMPI compared to Intel MPI + Intel compiler. Profiling shows that almost all of the extra...

yuhao0102

OpenMPI main branch 3rd-party prrte points to obsolete/bugged version

1

Thank you for taking the time to submit an issue! ## Background information ### What version of Open MPI are you using? (e.g., v4.1.6, v5.0.1, git branch name and hash,...

fgava90

MPI_Type_get_envelope_c is wrong

2

Thank you for taking the time to submit an issue! ## Background information ### What version of Open MPI are you using? (e.g., v4.1.6, v5.0.1, git branch name and hash,...

lindsayad

Is the error "Error string: /lib64/libcuda.so.1: undefined symbol: cuIpcOpenMemHandle_v2 CUDA-aware support is disabled." due to unavailability of module nv_peer_mem or nvidia-peermem in the nvidia-driver

2

Hello everyone I am facing error shown below -------------------------------------------------------------------------- An error occurred while trying to map in the address of a function. Function Name: cuIpcOpenMemHandle_v2 Error string: /lib64/libcuda.so.1: undefined symbol:...

Dcn303

cuda-aware build fails cuda runtime linking with undefined symbol cuIpcOpenMemHandle_v2

5

Thank you for taking the time to submit an issue! ## Background information ### What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch name and hash,...

mlohry

## Background information ### What version of Open MPI are you using? (e.g., v4.1.6, v5.0.1, git branch name and hash, etc.) branch main, hash 4038fd6c70fd118f3f6961e23206e77313a132ba, with changes to ompi/mca/coll/base/coll_base_comm_select.c according...

Robyroc

Running openmpi with different rank on two docker on same host

2

I am trying to run openmpi on two docker on same host , but rank for the process is same i.e 0 how can i force the two process to...

alokprasad-mrvl

Issue to mark fact that we don't plan to use all of the changes in https://github.com/open-mpi/ompi/pull/13299 but just those related to the single-shot launch mechanism. Since we also will want...

hppritcha