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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