# help for installation cdk

**URL:** <https://forums.developer.nvidia.com/t/help-for-installation-cdk/131814>\
**Category:** Legacy PGI Compilers (archived)\
**Created:** [June 25, 2010, 2:37pm UTC](https://forums.developer.nvidia.com/t/help-for-installation-cdk/131814 "2010-06-25T14:37:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rough](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@rough](https://forums.developer.nvidia.com/u/rough)\
**Post date:** [June 25, 2010, 2:37pm UTC](https://forums.developer.nvidia.com/t/help-for-installation-cdk/131814/1 "2010-06-25T14:37:39Z")

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Hi Mat  
Difference is great that means I can work with all servers in the cluster. as you know, the example in Installation guide, run it will give all hostname of server in their cluster. However, I can give only the server’s name itself without other server name of the cluster.  
I have run the example as you given, I obtain as  
[user2@ctrl~]pgf90 -o mpihello\_mpich -g -Mmpi=mpich2 mpihello.f  
[user2@ctrl ~]$ mpdboot  
[user2@ctrl ~]$ mpiexec -np 4 ./mpihello\_mpich  
hello - I am process 0 host [ctrl.cepri.com](http://ctrl.cepri.com)  
hello - I am process 1 host [ctrl.cepri.com](http://ctrl.cepri.com)  
hello - I am process 3 host [ctrl.cepri.com](http://ctrl.cepri.com)  
hello - I am process 4 host [ctrl.cepri.com](http://ctrl.cepri.com)  
So I always think any mistaken occur  
please check it!  
many thanks

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<div class="post-metadata">

**Author:** ![MatColgrove](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/matcolgrove/32/14047_2.png) [@MatColgrove](https://forums.developer.nvidia.com/u/MatColgrove)\
**Post date:** [June 25, 2010, 2:45pm UTC](https://forums.developer.nvidia.com/t/help-for-installation-cdk/131814/2 "2010-06-25T14:45:24Z")

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Hi rough,

No the test is fine. Looks like your just running on a single node. Check your machine.LINUX file. Either you have it set-up to run multiple processes on the same node or you only list a single node.

- Mat

```nohighlight
% mpirun -np 4 a.out
 hello - I am process 0 host masternode
 hello - I am process 1 host node01
 hello - I am process 2 host node02
 hello - I am process 3 host node03
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```