Re: [gmx-users] problem of paralleled running

2010-10-27 Thread Justin A. Lemkul



fancy2012 wrote:

Dear GMX users,
 
I have a problem when I run gromacs-4.5.1 on a cluster, I can only do 
paralleled running using 1 node, which is 8-cpu, but when I use more 
nodes, it will abort abnormally. Could someone help me figure it out? 
Thanks very much!
 


To get a faster resolution, you should provide substantially more detail, 
including:

1. Commands given to install Gromacs
2. Description of hardware, compilers, etc.
3. Command issued that causes the problem
4. The actual error message (from Gromacs, OS, MPI, etc.), if any

-Justin


All the best,
fancy
 



--


Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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RE: [gmx-users] problem of paralleled running

2010-10-27 Thread Dallas Warren
Can't help you directly, other than suggestion you provide a lot more
information than you have. Direct copy/paste of the command lines used,
error messages and log files generated, how GROMACS was installed etc.

 

Catch ya,

Dr. Dallas Warren

Medicinal Chemistry and Drug Action

Monash Institute of Pharmaceutical Sciences, Monash University
381 Royal Parade, Parkville VIC 3010
dallas.war...@monash.edu

+61 3 9903 9304
-
When the only tool you own is a hammer, every problem begins to resemble
a nail. 

 

From: gmx-users-boun...@gromacs.org
[mailto:gmx-users-boun...@gromacs.org] On Behalf Of fancy2012
Sent: Thursday, 28 October 2010 1:05 PM
To: gmx-users
Subject: [gmx-users] problem of paralleled running

 

Dear GMX users,

 

I have a problem when I run gromacs-4.5.1 on a cluster, I can only do
paralleled running using 1 node, which is 8-cpu, but when I use more
nodes, it will abort abnormally. Could someone help me figure it out?
Thanks very much!

 

All the best,

fancy

 

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Re: [gmx-users] problem of paralleled running

2010-10-27 Thread TJ Mustard



  

  



  
   On October 28, 2010 at 4:11 AM TJ Mustard  wrote:
  

  



  
   On October 28, 2010 at 4:05 AM fancy2012  wrote:
  

  

  Dear GMX users,



   



  I have a problem when I run gromacs-4.5.1 on a cluster, I can only do paralleled running using 1 node, which is 8-cpu, but when I use more nodes, it will abort abnormally. Could someone help me figure it out? Thanks very much!



   

  


Gromacs 4.5.1 is somewhat viral on cpu (takes all of them if not told otherwise). I you submit multiple jobs to a node without telling gromacs (ie. mdrun) how many cpus to use, all the jobs will use all the cpus simultaneously. This can cause job failure.
  


 

If you use SGE, you may want to use SMP or MPI.

 


  

  

  All the best,



  fancy



   

  


 

TJ Mustard
 Email: musta...@onid.orst.edu
  


 

TJ Mustard
Email: musta...@onid.orst.edu
  

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Re: [gmx-users] problem of paralleled running

2010-10-27 Thread TJ Mustard



  

  



  
   On October 28, 2010 at 4:05 AM fancy2012  wrote:
  

  

  Dear GMX users,



   



  I have a problem when I run gromacs-4.5.1 on a cluster, I can only do paralleled running using 1 node, which is 8-cpu, but when I use more nodes, it will abort abnormally. Could someone help me figure it out? Thanks very much!



   

  


Gromacs 4.5.1 is somewhat viral on cpu (takes all of them if not told otherwise). I you submit multiple jobs to a node without telling gromacs (ie. mdrun) how many cpus to use, all the jobs will use all the cpus simultaneously. This can cause job failure.


  

  All the best,



  fancy



   

  


 

TJ Mustard
Email: musta...@onid.orst.edu
  

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[gmx-users] problem of paralleled running

2010-10-27 Thread fancy2012
Dear GMX users,
 
I have a problem when I run gromacs-4.5.1 on a cluster, I can only do 
paralleled running using 1 node, which is 8-cpu, but when I use more nodes, it 
will abort abnormally. Could someone help me figure it out? Thanks very much!
 
All the best,
fancy
 -- 
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