Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

Subject: [OMPI users] Proper way to throw an error to all nodes?
From: 8mj6tc902_at_[hidden]
Date: 2008-06-03 06:57:30

So I'm working on this program which has many ways it might possibly die
at runtime, but one of them that happens frequently is the user types a
wrong (non-existant) filename on the command prompt. As it is now, the
node looking for the file notices the file doesn't exist and tries to
terminate the program. It tries to call MPI_Finalize(), but the other
nodes are all waiting for a message from the node doing the file
reading, so MPI_Finalize waits forever until the user realizes the job
isn't doing anything and terminates it manually.

So, my question is: what's the "correct" graceful way to handle
situations like this? Is there some MPI function which can basically
throw an exception to all other nodes telling them bail out now? Or is
correct behaviour just to have the node that spotted the error die
quietly and wait for the others to notice?

Thanks for any suggestions!

[A dream that comes true can't really be called a dream.]