Lisandro Dalcin

mpi4py: Regression in spawn tests

2

I believe changes over the last week may have introduce issues in spawn support. Two successive runs of mpi4py testsuite both failed at the same point. From the traceback, looks...

Sessions: error checking for invalid argument

7

While extending mpi4py test suite, I've found several issues related to error checking and invalid arguments. ## Issues related to using the MPI_SESSION_NULL handle The following routines do not fail...

Looks like singleton MPI init and spawn is broken in the main branch. Look at this reproducer: ```c #include #include int main(int argc, char *argv[]) { MPI_Comm parent, intercomm; MPI_Init(NULL,...

MPI-4.0: Mandatory "mpi_size" info key from Session processors sets.

2

Please review MPI-4.0, pp 503, lines 43-44, quoted below: > A process set caches key/value tuples that are accessible to the application via an MPI_Info object. The "mpi_size" key is...

Sessions: Issues after second init/fini round without MPI_Init

1

# Reproducer ```python import mpi4py mpi4py.rc.initialize = False from mpi4py import MPI assert not MPI.Is_initialized() # first round session = MPI.Session.Init() session.Finalize() print('OK') # second round session = MPI.Session.Init() session.Finalize()...

MPI-4: Missing MPI_Status_set_elements_c

7

This is technically not an omission MPICH. Looks like MPI standard forgot to add a new `MPI_Status_set_elements_c` routine. However, it would make a lot of sense to add it provisionally,...

concurrent.futures: Bad signature for Executor.submit() under Python <= 3.8

14

# Reproducer ``` python3.8 -m venv /tmp/py38 source /tmp/py38/bin/activate pip -q install mypy stubtest concurrent.futures ``` # Tentative fix ```diff diff --git a/stdlib/concurrent/futures/_base.pyi b/stdlib/concurrent/futures/_base.pyi index 5b756d87..fc6a342c 100644 --- a/stdlib/concurrent/futures/_base.pyi +++...

I'm trying to write an alternative `setup.py` for [mpi4py](https://github.com/mpi4py/mpi4py), as shown in full below. Using an empty key in `package_data` does not seem to work as in [setuptools](https://setuptools.readthedocs.io/en/latest/userguide/datafiles.html). None of...