On Mar 3, 2010, at 3:42 PM, Fernando Lemos wrote: > On Wed, Mar 3, 2010 at 5:31 PM, Joshua Hursey <jjhur...@open-mpi.org> wrote: > <snip> >> >> Yes, ompi-restart should be printing a helpful message and exiting normally. >> Thanks for the bug report. I believe that I have seen and fixed this on a >> development branch making its way to the trunk. I'll make sure to move the >> fix to the 1.4 series once it has been applied to the trunk. >> >> I filed a ticket on this if you wanted to track the issue. >> https://svn.open-mpi.org/trac/ompi/ticket/2329 > > Ah, that's great. Just wondering, do you have any idea why blcr-util > is required? That package only contains the cr_* binaries (cr_restart, > cr_checkpoint, cr_run) and some docs (manpages, changelog, etc.). I've > filled a Debian bug (#572229) about making openmpi-checkpoint depend > on blcr-util, but the package maintainer told me he found it unusual > that ompi-restart would depend on the cr_* binaries since libcr > supposedly provides all the functionality ompi-restart needs. > > I'm about to compile OpenMPI in debug mode and take a look at the > backtrace to see if I can understand what's going on. > > Btw, this is the list of files in the blcr-util package: > http://packages.debian.org/sid/amd64/blcr-util/filelist . As you can > see, only cr_* binaries and docs.
Open MPI currently calls 'cr_restart' for each process it restarts, exec'ed from the 'opal-restart' binary (LAM/MPI also used cr_restart directly, in case anyone is interested). We use the internal library interface for checkpoint, but not restarting at this time. If I recall correctly, it wasn't until relatively recently that BLCR added the ability to restart a process from a library call. We have not put in the code to use this functionality (though all of the framework interfaces are in place to do so). On my development branch I will add the ability to use the BLCR library interface if available. That functionality will not likely make it to the v1.4 release series since it is not really a bug fix, but I will plan on including it in the v1.5 and later releases. And just so I don't lose track of it, I created an enhancement ticket for this: https://svn.open-mpi.org/trac/ompi/ticket/2330 Cheers, Josh > >> >> Thanks again, >> Josh > > Thank you! > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
