[mpich-discuss] Asking standard checkpoint in MPICH2

[Darius Buntinas]

Checkpointing is only supported in 1.3a2.  In 1.2.1.p1, hydra added some 
checkpointing utility features, but there's no checkpointing in MPICH2 
itself.

-d

On 05/10/2010 10:10 PM, Bagus Jati Santoso wrote:
> Hi Darius,
>
> OK. Thank you for answer my email.
>
> And how about MPICH-1.2.1.p1? The more stable version one..
> Do I need to install BLCR first for this version?
>
> Since 1.2.p1 have a support for BLCR too, which version do you suggest
> to work with BLCR package, 1.2.1.p1 or 1.3a2 ?
>
> Thank you very much,
>
> Bagus
>
>
>
>
> On Tue, May 11, 2010 at 4:17 AM, Darius Buntinas <buntinas at mcs.anl.gov
> <mailto:buntinas at mcs.anl.gov>> wrote:
>
>     Hi Bagus,
>
>     Sorry, I haven't written up the documentation on this yet.  You'll
>     need to install BLCR, and configure mpich2 with the following
>     configure options:
>
>     --with-hydra-ckpointlib=blcr --enable-checkpointing
>
>     If you didn't install BLCR in a standard system location (e.g., if
>     you installed it in your home directory), then you'll need to
>     specify the install location using the --with-blcr= configure option
>     as well.  Also, make sure that your LD_LIBRARY_PATH is set correctly
>     if necessary.
>
>     Once you configure and make, you'll need to make sure the BLCR
>     kernel modules are loaded on each machine.  Use the
>     -ckpoint-interval option for mpiexec to specify how often to take
>     checkpoints.  You'll also need to specify the location where the
>     checkpoint files should be written using the -ckpoint-prefix option
>     (make sure the directory exists).
>
>     To restart from a checkpoint specify the same number of processes as
>     the original run and the -ckpoint-prefix option, but leave off the
>     name of the executable.
>
>     Let us know how this works for you.  Remember that you're using a
>     beta version, so you might still encounter some bugs.
>
>     -d
>
>