Problem 2120 - C++ bindings have been removed from the MPI standard and Open-MPI has deprecated them
Summary: C++ bindings have been removed from the MPI standard and Open-MPI has depreca...
Status: CLOSED WONTFIX
Alias: None
Product: Examples/Extended
Classification: Unclassified
Component: paralle/MPI (show other problems)
Version: 10.4
Hardware: All All
: P4 minor
Assignee: Koichi Murakami
URL:
Depends on:
Blocks:
 
Reported: 2019-01-17 21:24 CET by James
Modified: 2020-03-02 16:55 CET (History)
1 user (show)

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Description James 2019-01-17 21:24:01 CET 
The C++ bindings have been removed from the MPI standard and Open-MPI no longer builds them by default. Because of this the C++ bindings used by the example are not present in a default install of open-mpi. However CMAKE detects the install of open-mpi and proceeds as if open-mpi C++ bindings are present.

Currently if you install open-MPI with `--enable-mpi-cxx-bindings` the bindings will be present (I have not had the opportunity to verify this), but a purely default install of open-mpi will cause parallel/MPI to be built despite the lack of necessary bindings.

Possible solutions:
Use Boost.MPI to get C++ bindings of MPI.
Rewrite to use the C interface.
Improve cmake open-mpi detection to check for C++ binding presence

See Also:
see: https://raw.githubusercontent.com/open-mpi/ompi/v4.0.x/NEWS
Comment 1 Koichi Murakami 2020-03-02 16:55:17 CET 
We keep finding a solution for using MPI-3 and other MPI tools.
We are lack of manpower to explore the issue more so far.
Te issue is pending for a while.