I did the same test using 1.3.4 and still the same issue.... I also tried to use the tm interface instead of specifying the hostfile, same result.

thanks,

Jonathan

Josh Hursey wrote:
Though I do not test this scenario (using hostfiles) very often, it used to work. The ompi-restart command takes a --hostfile (or --machinefile) argument that is passed directly to the mpirun command. I wonder if something broke recently with this handoff. I can certainly checkpoint with one set of nodes/allocation and restart with another, but most/all of my testing occurs in a SLURM environment, so no need for an explicit hostfile.

I'll take a look to see if I can reproduce, but probably will not be until next week.

-- Josh

On Dec 2, 2009, at 9:54 AM, Jonathan Ferland wrote:

Hi,

I am trying to use BLCR checkpointing in mpi. I am currently able to run my application using some hostfile, checkpoint the run, and then restart the application using the same hostfile. The thing I would like to do is to restart the application with a different hostfile. But this leads to a segfault using 1.3.3.

Is it possible to restart the application using a different hostfile (we are using pbs to create the hostfile, so each new restart might be on different nodes), how can we do that? If no, do you plan to include this in a future release?

thanks

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Jonathan Ferland, analyste en calcul scientifique
RQCHP (Réseau québécois de calcul de haute performance)

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