Using one processor from each of multiple nodes on ccp 2003

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• 2009年12月4日 9:59

   

   
  

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  Hi,
  
  

  mpiexec.exe -hosts %CCP_NODES: 8= 1%

  should do the trick.
  8 should be set to the number of processors per node of your cluster!
  
  If you are interested how and why I've an explanation here:
  http://www.blogs.uni-erlangen.de/JohannesHabich/stories/2365/
  
  
  In 2008 this is much more easier done by

  mpiexec -cores 1

  
  C:\>mpiexec -help
  Launches an application on multiple hosts.
  
  Usage:
  
      mpiexec [options] executable [args] [ : [options] exe [args] : ... ]
      mpiexec -configfile <file name>
  
  Common options:
  
  -n     <num_processes>
  -env   <env_var_name> <env_var_value>
  -wdir  <working_directory>
  -hosts n host1 [m1] host2 [m2] ... hostn [mn]
  -cores <num_cores_per_host>
  -lines
  -trace [filter]
  -debug [0-3]
  
  Examples:
  
      mpiexec -n 4 pi.exe
      mpiexec -hosts 1 server1 master : -n 8 worker
  
  For a complete list of options, run mpiexec -help2
  For a list of environment variables, run mpiexec -help3
  

  ---

  JH

  • 已编辑 Johannes_de 2009年12月4日 10:00 4 to 8
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• 2009年12月8日 3:38

   

   
  

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  Hi Skiff,
  
  The following is one way to do that in CCP 2003:
  
  Assume your nodes are node1, node2:
  
  job submit /askednodes:node1,node2 mpiexec -hosts 2 node1 1 node2 1 <cmdline>
  
  If you are using HPC 2008, it will be easier:
     job submit /numnodes:2 mpiexec -c 1 <cmdline>
  
  Thanks,
  
  liwei

  • 已建议为答案 Don PatteeModerator 2009年12月9日 6:19
  • 已标记为答案 Don PatteeModerator 2010年2月19日 1:17
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• 2009年12月9日 8:45

   

   
  

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  Thank you Liwei.
    I have solved the probleme by using "mpiexec -hosts2 cn01 cn02 myapp.exe“ in the command line of the graphical interface of ccp2003.
    Obviously HPC2008 is more powerful, maybe I need to persuade my boss to update. But now I have to stick with 2003. 
   
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