On 3/09/2011 3:08 PM, Jose Tusell wrote:
I know this error has been reported before and Mark Abraham suggested to file a bug report on redmine. While starting regular NPT remd on my system I run into the following problem:

init_step+nsteps is not equal for all subsystems
  subsystem 0: 25000000
  subsystem 1: 0
  subsystem 2: 25000000
  subsystem 3: 0
  subsystem 4: 25000000
  subsystem 5: 0
  subsystem 6: 25000000
  subsystem 7: 0
  subsystem 8: 25000000
  subsystem 9: 0
  subsystem 10: 25000000
  subsystem 11: 0
  subsystem 12: 25000000

-------------------------------------------------------
Program mdrun_mpi_d, VERSION 4.5.4
Source code file: main.c, line: 249

Fatal error:
The 64 subsystems are not compatible

gmxdump gives the same nsteps and init_step. Let me know what you'd need to file a bug on redmine.

A description of how to reproduce the problem, GROMACS version and input files to re-create the problem in a short run. Assuming you're not deliberately providing mismatching .tpr files, the question becomes how init_step + nsteps becomes different for the different .tpr files. That seems to be during grompp, since gmxdump agrees on the contents of the .tpr files.

Mark
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