Hmm -- I'm having difficulty understanding the exact scenario here.

Are you using the Mercurial SCM module, or copytree?

I don't think that I have used the Mercurial SCM module before -- I believe Ethan added that.  Ethan -- does SCM/Mercurial work well for you?



On Feb 18, 2011, at 2:06 AM, Mike Dubman wrote:

>
> 1. post_copy fails because does not find some files which should be already copied.
> 2. In the mtt debug output, (attached in original post) you can see that "post_copy" is executed before "copytree" has finished.
>
> >> copytree running post_copy command:
> ...
> ...
>
> >> copytree finished copying
>
> On Fri, Feb 18, 2011 at 12:23 AM, Jeff Squyres <jsquyres@cisco.com> wrote:
> On Feb 10, 2011, at 2:36 PM, Mike Dubman wrote:
>
> > There is a race condition in SCM, Mercurial module when used from MPI GET phase:
> >
> > - scm_post_copy hook can be started before MPI GET completed copy of fetched tree into install location.
>
> How have you verified this?
>
> > - This leads to mtt failure, because post_copy starts too early (tree was not copied yet) and fails.
> > - adding sleeps to post_copy hook - helps.
> > - does copytree used during mtt get phase have async behave?
>
> No, it shouldn't.  Everything is serial.
>
> >
> >
> > ---------------- from the mtt -d -v output ---------------------
> >
> > copytree running post_copy command:
> > ...
> > ...
> >
> > >> copytree finished copying
> > ----------------------------------------------------------------------------
> >
> >
> > Please suggest.
> >
> > Thanks
> >
> > M
> >
> >
> >
> > _______________________________________________
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> > mtt-devel@open-mpi.org
> > http://www.open-mpi.org/mailman/listinfo.cgi/mtt-devel
>
>
> --
> Jeff Squyres
> jsquyres@cisco.com
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>
>
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--
Jeff Squyres
jsquyres@cisco.com
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/