JuliaParallel/MPI.jl

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MPI wrappers for Julia

Stars: 439
Forks: 127
Open beginner issues: 0
Indexed issues: 72
Avg merge: 19h 6m
Merged PRs (30d): 17

Dominant language: Julia
License: Unlicense
Last GitHub push: Sep 12, 2026
Latest indexed: Sep 18, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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72 open issues indexed

Should `MPI.mpiexec()` be `ENV["MPITRAMPOLINE_MPIEXEC"]` when `MPIPreference.binary = MPITrampoline_jll`? Open

JuliaParallel/MPI.jl#820 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Ookami: MPI error opal_libevent2022_evthread_use_pthreads Open

JuliaParallel/MPI.jl#835 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
AMDGPU tests are failing in allgather Open

CI rocm

JuliaParallel/MPI.jl#841 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 18, 2026
Investigate need for `JULIA_CUDA_MEMORY_POOL=none` Open

JuliaParallel/MPI.jl#843 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
MPIPreferences fails with vendor="cray" Open

JuliaParallel/MPI.jl#849 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Large-count API Open

API enhancement

JuliaParallel/MPI.jl#880 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Mysterious serialization crash during bcast Open

JuliaParallel/MPI.jl#881 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
CI: Threads tests segfault on Julia nightly Open

CI

JuliaParallel/MPI.jl#889 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Reductions with CUDA are sometimes wrong Open

bug CUDA :flower_playing_cards:

JuliaParallel/MPI.jl#892 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Tracing MPI calls in jll packaged shared libraries Open

JuliaParallel/MPI.jl#893 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 18, 2026
Mention MPIClusterManagers.jl in the README of this repo? Open

JuliaParallel/MPI.jl#904 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
[CI] Restore running tests using system mpich Open

CI

JuliaParallel/MPI.jl#906 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Cray MPI autodetection fails on AMD MI300A node (missing `mpi_gtl_hsa` preload) Open

bug Cray MPI

JuliaParallel/MPI.jl#919 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Document that users of MultiRequest/UnsafeMultiRequest need to call free on the request Open

documentation

JuliaParallel/MPI.jl#920 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
`MPI.REQUEST_NULL` only pretends to be a constant Open

JuliaParallel/MPI.jl#921 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Reason for omitting Isendrecv from top-level API? Open

JuliaParallel/MPI.jl#928 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Distributed.jl with MPI.jl: execution time increases with each iteration, after MPI.jl > 0.19.2 Open

JuliaParallel/MPI.jl#930 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Simple hello world example fails with JuliaC using --experimental --trim Open

JuliaParallel/MPI.jl#931 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Auto-generate MPI API bindings from MPI standard Open

JuliaParallel/MPI.jl#938 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 18, 2026
`using MPI` with mpiexecjl fails with Julia 1.13.0-rc1 Open

JuliaParallel/MPI.jl#951 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Use `@ccall gc_safe=true` for blocking calls Open

JuliaParallel/MPI.jl#954 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026
Do not free resources in `MPI_*_free` calls Open

JuliaParallel/MPI.jl#977 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 18, 2026

JuliaParallel/MPI.jl

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