[Beowulf] Checkpointing using flash

Justin YUAN SHI shi at temple.edu
Fri Sep 21 08:15:24 PDT 2012


It looks fairly accurate.

This is because reconcile distributed checkpoints is theoretically
difficult. Therefore, frequent checkpointing is cost prohibitive for
exacscale apps.

Justin

On Fri, Sep 21, 2012 at 10:49 AM, Hearns, John <john.hearns at mclaren.com> wrote:
> http://www.theregister.co.uk/2012/09/21/emc_abba/
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> Frequent checkpointing will of course be vital for exascale, given the MTBF
> of individual nodes.
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> However how accurate is this statement:
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> HPC jobs involving half a million compute cores ... have a series of
> checkpoints set up in their code with the entire memory state stored at each
> checkpoint in a storage node.
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> John Hearns | CFD Hardware Specialist | McLaren Racing Limited
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