<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div dir="ltr">I have tried what you mentioned in the previous E-mail. <div><br><div>1- I have build MPICH for CPU node and ARM node.</div><div>2- Uploaded the <span style="font-size:12.8px">binaries</span> on same path on the 2 nodes.</div><div>3- Compiled helloWorld (it sends a number from process zero to all other processes ) for both nodes. Then tried <span style="font-size:12.8px">mpiexec -np 2 -f <hostfile with mic hostnames>./helloworld</span> </div><div><br></div><div>I got this error</div><div> Fatal error in MPI_Recv: Other MPI error, error stack:</div><div>MPI_Recv(200)................................: MPI_Recv(buf=0xbe9460d0, count=1, MPI_INT, src=0, tag=0, MPI_COMM_WORLD, status=0x1) failed</div><div>MPIDI_CH3i_Progress_wait(242)................: an error occurred while handling an event returned by MPIDU_Sock_Wait()</div><div>MPIDI_CH3I_Progress_handle_sock_event(554)...: </div><div>MPIDI_CH3_Sockconn_handle_connopen_event(899): unable to find the process group structure with id <></div><div><br></div><div>Regards,</div><div>Doha</div><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Nov 16, 2016 at 6:38 PM, Min Si <span dir="ltr"><<a href="mailto:msi@anl.gov" target="_blank">msi@anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I guess you might need to put all the MPICH binaries (e.g., hydra_pmi_proxy) to the same path on each node. I have executed MPICH on Intel MIC chips from the host CPU node where OS are different. The thing I did was:<br>
1. build MPICH for both CPU node and MIC on the CPU node (you have done this step).<br>
2. upload the MIC binaries to the same path on MIC chip as on the CPU node<br>
For example:<br>
- on CPU node : /tmp/mpich/install/bin holds the CPU version<br>
- on MIC : /tmp/mpich/install/bin holds the MIC version<br>
3. compile helloworld.c with the MIC version mpicc<br>
4. execute on CPU node: mpiexe -np 2 -f <hostfile with mic hostnames>./helloworld<br>
<br>
I think you should be able to follow step 2, but since your helloworld binary is also built with different OS, you might want to put it also into the same path on two nodes similar as we do for MPICH binaries.<span class="HOEnZb"><font color="#888888"><br>
<br>
Min</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
On 11/16/16 8:29 AM, Kenneth Raffenetti wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Have you disabled any and all firewalls on both nodes? It sounds like they are unable to communicate in initialization.<br>
<br>
Ken<br>
<br>
On 11/16/2016 07:34 AM, Doha Ehab wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Yes, I built MPICH-3 on both systems and I tried the code on each node<br>
separately and it worked, I tried each node with other nodes that has<br>
the same operating system and it worked as well.<br>
When I try the code on the 2 nodes that have different operating systems<br>
no result or error message appear.<br>
<br>
Regards<br>
Doha<br>
<br>
On Mon, Nov 14, 2016 at 6:25 PM, Kenneth Raffenetti<br>
<<a href="mailto:raffenet@mcs.anl.gov" target="_blank">raffenet@mcs.anl.gov</a> <mailto:<a href="mailto:raffenet@mcs.anl.gov" target="_blank">raffenet@mcs.anl.gov</a>>> wrote:<br>
<br>
It may be possible to run in such a setup, but it would not be<br>
recommended. Did you build MPICH on both systems you are trying to<br>
run on? What exactly happened when the code didn't work?<br>
<br>
Ken<br>
<br>
<br>
On 11/13/2016 12:36 AM, Doha Ehab wrote:<br>
<br>
Hello,<br>
I tried to run a parallel (Hello World) C code on a cluster<br>
that has 2<br>
nodes, the nodes have different operating system so the code did not<br>
work and no results were printed.<br>
How to make such a cluster work? is there is extra steps that<br>
should be<br>
done?<br>
<br>
Regards,<br>
Doha<br>
<br>
<br>
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