Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: [OMPI users] Question on checkpoint overhead in Open MPI
From: Nguyen Toan (nguyentoan1508_at_[hidden])
Date: 2010-07-07 12:25:52


Hello everyone,
I have a question concerning the checkpoint overhead in Open MPI, which is
the difference taken from the runtime of application execution with and
without checkpoint.
I observe that when the data size and the number of processes increases, the
runtime of BLCR is very small compared to the overall checkpoint overhead in
Open MPI. Is it because of the increase of coordination time for checkpoint?
And what is included in the overall checkpoint overhead besides the BLCR's
checkpoint overhead and coordination time?
Thank you.

Best Regards,
Nguyen Toan