Open MPI logo

Open MPI User's Mailing List Archives

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

Subject: Re: [OMPI users] Question on checkpoint overhead in Open MPI
From: Nguyen Toan (nguyentoan1508_at_[hidden])
Date: 2010-07-15 00:30:14

Somebody helps please? I am sorry to spam the mailing list but I really need
your help.
Thanks in advance.

Best Regards,
Nguyen Toan

On Thu, Jul 8, 2010 at 1:25 AM, Nguyen Toan <nguyentoan1508_at_[hidden]>wrote:

> 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