5.0.3 "Both TCP interface include and exclude lists were specified"

[jwagnerhki]

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, etc.)

v5.0.3

Describe how Open MPI was installed (e.g., from a source/distribution tarball, from a git clone, from an operating system distribution package, etc.)

From source tarball

If you are building/installing from a git clone, please copy-n-paste the output from git submodule status.

Please describe the system on which you are running

• Operating system/version: CentOS 7.7.1908
• Computer hardware:
• Network type: Ethernet, Infiniband

---

Details of the problem

Excluding an interface, without an include list, results in a bizarre error claiming an exclude and include list were specified:

$ mpirun -np 45 --hostfile test.machines --show-progress --mca mpi_yield_when_idle 0 --map-by seq --bind-to none --mca btl_base_verbose 100 --mca btl_tcp_if_exclude 10.10.0.0/16 --mca oob_tcp_if_exclude 10.10.0.0/16  /cluster/difx/runmpifxcorr.DiFX-255-ompi5 test.input
--------------------------------------------------------------------------
Both TCP interface include and exclude lists were specified:

  Include: 10.10.0.0/16
  Exclude: 10.10.0.0/16

Only one of these can be given.
--------------------------------------------------------------------------

[rhc54]

Change the names as follows:

--omca btl_tcp_if_exclude 10.10.0.0/16 --prtemca oob_tcp_if_exclude 10.10.0.0/16

The problem is that things get confused when you don't clearly specify the target of the params (i.e., the runtime vs the MPI layers). We try to work it out, but cannot always guess correctly.

[ggouaillardet]

If that does not fix your issue, double check the config files and the environment, the included interfaces might be there.

[github-actions]

It looks like this issue is expecting a response, but hasn't gotten one yet. If there are no responses in the next 2 weeks, we'll assume that the issue has been abandoned and will close it.