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MPI_Win_create fails with -np 1

5

Hi, I am trying to compile and run an experiment in a simulation framework. I have tried other frameworks where I get no errors, but this uses some of the...

ximtec

Fortran configure warnings and build errors with nvidia fortran compiler

6

Seeing the following compiler warnings with nvidia hpc sdk 22.2 available here https://developer.nvidia.com/nvidia-hpc-sdk-releases ## Background information ### What version of Open MPI are you using? (e.g., v3.0.5, v4.0.2, git branch...

Akshay-Venkatesh

OSC/UCX: Adding the following optimizations (nonblocking accumulate and reusing resources)

2

Adding the following optimizations: 1) Reuse the same workers/eps in single-threaded applications, this is helpful if an application creates many windows, therefore, we avoid the unnecessary overheads and 2) adding...

MamziB

HCOLL fails to save coll handlers and ends in Segfault when used with HAN

1

I'm trying to run `coll/han` with `coll/hcoll` as a backend but see the following issue on both `main` and `5.0.x` on Hawk (ConnectX-6 fabric): ``` mpirun -N 4 -n 16...

devreal

Cannot build common/ofi as DSO

11

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,...

mkre

mpirun issues the warning "no protocol specified"

55

Thank you for taking the time to submit an issue! ## Background information I have updated a machine to Ubuntu 20.04 LTS which involved an update to OpenMPI 4.0.3. When...

philippkraft

Add mpi4py test suite to Jenkins builds

2

Per https://github.com/open-mpi/ompi/issues/4126, we want to add the mpi4py tests to the Jenkins builds. They are designed to run single node, and run in a couple minutes, so a single test...

bwbarrett

The mpirun - N 20 program was run 20 times with one command

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,...

hwmmm1

tuned decision for single node communicators

1

bosilca

[5.0.x] Issues with some mpirun arguments (map-by, output-filename, indentation)

1

- Specifying the `--map-by` argument leads to an error: ``` $ mpirun -N 1 -n 2 --rank-by core --map-by node hostname -------------------------------------------------------------------------- When resolving deprecated command line options, the result...

devreal