Have you disabled any and all firewalls on both nodes? It sounds like they are unable to communicate in initialization. Ken On 11/16/2016 07:34 AM, Doha Ehab wrote:

Yes, I built MPICH-3 on both systems and I tried the code on each node separately and it worked, I tried each node with other nodes that has the same operating system and it worked as well. When I try the code on the 2 nodes that have different operating systems no result or error message appear.

Regards Doha

On Mon, Nov 14, 2016 at 6:25 PM, Kenneth Raffenetti <[email protected] <mailto:[email protected]>> wrote:

It may be possible to run in such a setup, but it would not be recommended. Did you build MPICH on both systems you are trying to run on? What exactly happened when the code didn't work?

Ken

On 11/13/2016 12:36 AM, Doha Ehab wrote:

Hello, I tried to run a parallel (Hello World) C code on a cluster that has 2 nodes, the nodes have different operating system so the code did not work and no results were printed. How to make such a cluster work? is there is extra steps that should be done?

Regards, Doha

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