Just a hunch but is there any chance you can try another version of OpenMPI? Hopefully a newer version?<br><br>-berk<br><br><div class="gmail_quote">On Thu, Feb 4, 2010 at 11:16 AM, Bart Janssens <span dir="ltr"><<a href="mailto:bart.janssens@rma.ac.be">bart.janssens@rma.ac.be</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">On Wednesday 03 February 2010 09:58:53 pm Berk Geveci wrote:<br>
> Any chance you can attach with a debugger to one of the nodes that<br>
> crash? It is hard to tell what is wrong from the errors you posted. We<br>
<br>
</div>I have recompiled with debugging symbols and attached a backtrace from the first pvserver process. The crash is in Mesa, and happens both with the stock Mesa 6.5 from CentOS and after upgrading to the<br>
latest stable version from source (7.6.1). The relevant piece of mesa code appears to be the jmp call below (Mesa 7.6.1):<br>
<br>
#elif defined(PTHREADS)<br>
pushq %rdi<br>
call _x86_64_get_dispatch@PLT<br>
popq %rdi<br>
movq 2344(%rax), %r11<br>
jmp *%r11<br>
#else<br>
<br>
I have absolutely no clue what this bit of code does, or why it fails here (especially only when more than 4 processes are running). I have tried using both 8 processes on the same node and 8 processes on<br>
different nodes. This looks very similar to these threads:<br>
<a href="http://markmail.org/thread/owglrjmzkqlfmuhm" target="_blank">http://markmail.org/thread/owglrjmzkqlfmuhm</a><br>
and<br>
<a href="http://markmail.org/message/5eekpxkkh5iput2w" target="_blank">http://markmail.org/message/5eekpxkkh5iput2w</a><br>
<br>
Somehow, I get the feeling this is not going to be easy... :)<br>
<div class="im"><br>
> have definitely run ParaView with OpenMPI with 4 core and more. Also,<br>
> what do you mean by "simple VTK file"? Small file? Big file?<br>
</div> It's a very small file (10700 cells), in this case the "airFoil2D" OpenFOAM tutorial file after conversion. It loads fine with exactly the same setup using 4 processes.<br>
<br>
Cheers,<br>
<br>
--<br>
<font color="#888888">Bart<br>
</font></blockquote></div><br>