Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

Subject: Re: [OMPI devel] Restarting and Pipes
From: Ralph Castain (rhc_at_[hidden])
Date: 2014-04-10 11:14:53


We hold an extra pipe to capture the output for diagnostic output generated by opal_output statements so it can be separated from the app's stdout/stderr streams

On Apr 10, 2014, at 8:03 AM, Adrian Reber <adrian_at_[hidden]> wrote:

> Trying to restart a process I see that orterun has three pipes connected
> to the processes running under its control (-np 1).
>
> orterun:
>
>
> orterun 11562 adrian 15w FIFO 0,8 0t0 5304173 pipe
> orterun 11562 adrian 16r FIFO 0,8 0t0 5304174 pipe
> orterun 11562 adrian 18r FIFO 0,8 0t0 5304175 pipe
>
>
> test-case (orte-test):
>
> orte-test 11565 adrian 0r FIFO 0,8 0t0 5304173 pipe
> orte-test 11565 adrian 1u CHR 136,15 0t0 18 /dev/pts/15
> orte-test 11565 adrian 2w FIFO 0,8 0t0 5304174 pipe
> [...]
> orte-test 11565 adrian 19w FIFO 0,8 0t0 5304175 pipe
>
> So fd 0 and fd 2 is clear why they are connected from orterun to the test-case
> but what is fd 19?
>
>
> Adrian
> _______________________________________________
> devel mailing list
> devel_at_[hidden]
> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
> Link to this post: http://www.open-mpi.org/community/lists/devel/2014/04/14488.php