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pythonmpimpichmpiexec

Mpdboot: Deprecation Warning

I am trying to use the mpdboot command to start 4 processors on which to run my MPI program. I created a mpd.hosts file with 4 nodes (75, 77, 79 and 80). Each of them run python 2.3.4. I also modified the bashrc and cshrc files to ensure that the variables contain the path to the directory of the compiler libraries. I also set up the mpd.conf file and checked that it has rw (600) permissions.

I have copied below the output screen when I run mpdboot

[n@heart]$ mpdboot -n 4 -r ssh

:38: Deprecation Warning: The popen2 module is deprecated. Use the subprocess module.

n@75's password:xxx

n@77's password:xxx

n@79's password:xxx

n@80's password:xxx

mpdboot_heart.int(err_exit 526): mpd failed to start correctly on heart.int

reason: 0: invalid port from mpd /opt/intel/mpi/2.0/bin/mpd.py:85: DeprecationWarning: the md5 module is deprecated; use hashlib instead

Killed

PART 2:

I also logged into one of the nodes and tried running mpdboot. Here is the output by doing that

[n@79 ~]$ mpdboot -n 4 -r ssh

n@75's password:xxx

n@77's password:xxx

n@79's password:xxx

n@80's password:xxx

mpdboot_79_0 (mpdboot 499): problem has been detected during mpd(boot) startup at 1 75; output:

Permission denied, please try again.

n@75's password: Permission denied, please try again.

n@77's password: mpdboot_79_0 (mpdboot 515): problem has been detected during mpd(boot) startup at 2 77; output:

Permission denied, please try again.

Permission denied (publickey,gssapi-with-mic,password).

n@77's password: Permission denied, please try again.

Permission denied (publickey,gssapi-with-mic,password).

How should I proceed on this matter?

Solution

  • A few points:

    1. You really don't want to use MPD anymore. That process manager has been deprecated and replaced with the hydra process manager.
    2. You must be using an old version of MPD (old version of MPICH2) because AFAIK all of those deprecation warnings were fixed as of the 1.1 release. I doubt you are actually running Python 2.3.4 because I think that those warnings were added to Python in version 2.6.
    3. With respect to "PART 2", you have a bad ssh configuration. You need to make sure that passwordless ssh (with ssh keys) works correctly between all hosts. This will be necessary even if you switch to the hydra process manager, although you may receive a nicer error message in that case.