parallel statistics.

Ravi rxk at
Fri Sep 11 10:11:07 CDT 2009


log_summary does give information like time for barrier, zero size MPI_send.
However interesting statistics like total latency time,
computation/communication time ratio etc ARE NOT GIVEN. IS THERE A WAY to
get those.





From: petsc-users-bounces at
[mailto:petsc-users-bounces at] On Behalf Of Matthew Knepley
Sent: Thursday, September 10, 2009 2:06 PM
To: PETSc users list
Subject: Re: parallel statistics.


On Thu, Sep 10, 2009 at 1:22 PM, Ravi <rxk at> wrote:

Hi all,

                This is Ravi Kannan from CFD Research Corporation. Are there
readily available or installable commands or chunks of code to get the
parallel statistics including important ones like time spent in waiting and
latency, communication time, available memory spent in each machine etc.
when solving AX=B type problem

In -log_summary.



Thanks in advance



Ravi Kannan, PhD

Research Engineer

CFD Research Corporation

215 Wynn Drive, Suite 501

Huntsville, AL  35805


rxk at


What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
-- Norbert Wiener

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