Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Development mailing list

Subject: Re: [OMPI devel] ROMIO code in OMPI
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-11-07 04:47:44


Hi Rayson

We take snapshots from time to time. We debated whether or not to update
again for the 1.7 release, but ultimately decided not to do so - IIRC, none
of our developers had the time.

If you are interested and willing to do the update, and perhaps look at
removing the limit, that is fine with me! You might check to see if the
latest ROMIO can go past 2GB - could be that an update is all that is
required.

Alternatively, you might check with Edgar Gabriel about the ompio component
and see if it either supports > 2GB sizes or can also be extended to do so.
Might be that a simple change to select that module instead of ROMIO would
meet the need.

Appreciate your interest in contributing!
Ralph

On Tue, Nov 6, 2012 at 11:55 AM, Rayson Ho <raysonlogin_at_[hidden]> wrote:

> How is the ROMIO code in Open MPI developed & maintained? Do Open MPI
> releases take snapshots of the ROMIO code from time to time from the
> ROMIO project, or was the ROMIO code forked a while ago and maintained
> separately in Open MPI??
>
> I would like to fix the 2GB limit in the ROMIO code... and that's why
> I am asking! :-D
>
> Rayson
>
> ==================================================
> Open Grid Scheduler - The Official Open Source Grid Engine
> http://gridscheduler.sourceforge.net/
>
>
> On Thu, Nov 1, 2012 at 6:21 PM, Richard Shaw <jrs65_at_[hidden]>
> wrote:
> > Hi Rayson,
> >
> > Just seen this.
> >
> > In the end we've worked around it, by creating successive views of the
> file
> > that are all else than 2GB and then offsetting them to eventually read in
> > everything. It's a bit of a pain to keep track of, but it works at the
> > moment.
> >
> > I was intending on following your hints and trying to fix the bug myself,
> > but I've been short on time so haven't gotten around to it yet.
> >
> > Richard
> >
> > On Saturday, 20 October, 2012 at 10:12 AM, Rayson Ho wrote:
> >
> > Hi Eric,
> >
> > Sounds like it's also related to this problem reported by Scinet back in
> > July:
> >
> > http://www.open-mpi.org/community/lists/users/2012/07/19762.php
> >
> > And I think I found the issue, but I still have not followed up with
> > the ROMIO guys yet. And I was not sure if Scinet was waiting for the
> > fix or not - next time I visit U of Toronto, I will see if I can visit
> > the Scinet office and meet with the Scinet guys!
> >
> >
> >
> >
> > _______________________________________________
> > users mailing list
> > users_at_[hidden]
> > http://www.open-mpi.org/mailman/listinfo.cgi/users
> _______________________________________________
> devel mailing list
> devel_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>