Hi,

This could be due to problems with MPICH.
Could you please try openmpi and report back?

Thanks,

Berk

From: [email protected]
To: [email protected]
Date: Wed, 11 Aug 2010 18:09:00 +0900
Subject: [gmx-users] Replica Exchange problem in gmx-4.5 beta3 








Hello!
I'm doing a simple REMD test with 4 
replicas.
Time step : 2 fs
Exchange : every 500fs
 
md_0.tpr md_1.tpr md_2.tpr md_3.tpr 
 
mpiexec(or mpirun) -np 4 mdrun_mpi_d -deffnm md_ 
-multi 4 -replex 200
 I got a error message.
 
##error##
1000000 steps,   2000.0 ps.
step 600 rank 
3 in job 10  localhost.localdomain_50305   caused collective 
abort of all ranks
  exit status of rank 3: killed by signal 11 
rank 
2 in job 10  localhost.localdomain_50305   caused collective 
abort of all ranks
  exit status of rank 2: killed by signal 11 

 
Using gmx4.0.7 , It works fine.
Is this bug in gmx-4.5 beta ?
In log files, no error message were 
found.
gmx-4.5 beta3 was compiled with icc 11.0
and mpich2-1.2.1p1.



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