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Hi Matt,<br>
<br>
In that case, what would be a good or accurate way to debug the MPI
code? I'm trying to determine where the fault lies.<br>
<pre class="moz-signature" cols="72">Thank you
Yours sincerely,
TAY wee-beng</pre>
<div class="moz-cite-prefix">On 5/1/2016 9:31 AM, Matthew Knepley
wrote:<br>
</div>
<blockquote
cite="mid:CAMYG4Gk5fNSkW_ALtZcf2WKcVHXTqjhpZF8qk3g8q7Nv72dq0g@mail.gmail.com"
type="cite">
<div dir="ltr">
<div class="gmail_extra">
<div class="gmail_quote">On Mon, Jan 4, 2016 at 7:28 PM, TAY
wee-beng <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:zonexo@gmail.com" target="_blank">zonexo@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I am trying to debug my CFD Fortran MPI code. I tried to
add:<br>
<br>
call PetscBarrier(PETSC_NULL_OBJECT); if (myid==0) print
*, "xx"<br>
<br>
to do a rough check on where the error is. xx is a
different number for each line.<br>
<br>
I found that whenever I add this line, the code aborts
with segmentation error.<br>
<br>
I am using the Intel compiler. Is there any error with my
usage?</blockquote>
<div><br>
</div>
<div>I don't think this makes sense since it will try to
pull a communicator out of the NULL_OBJECT.</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="HOEnZb"><font color="#888888"><br>
-- <br>
Thank you<br>
<br>
Yours sincerely,<br>
<br>
TAY wee-beng<br>
<br>
</font></span></blockquote>
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<br>
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<div><br>
</div>
-- <br>
<div class="gmail_signature">What most experimenters take for
granted before they begin their experiments is infinitely
more interesting than any results to which their experiments
lead.<br>
-- Norbert Wiener</div>
</div>
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</blockquote>
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