[gmx-users] decomposition error

[Chang Woon Jang]

Dear Grimaces Users,

I have the decomposition error. I have tried to reduce the number of cores
but still have the same problem. In my conf.gro, the cell size is about
5.5x5.5x5.5 but I do not know what the minimum cell size of 1.875nm.

 Would you please give me some comments or relevant topics addressed?

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Program gmx, VERSION 5.0.7-dev-20151003-1909f2f

Source code file:
/home1/02271/huddack/votca_install/src/gromacs/src/gromacs/mdlib/domdec.c,
line: 6902


Fatal error:

There is no domain decomposition for 16 ranks that is compatible with the
given box and a minimum cell size of 1.875 nm

Change the number of ranks or mdrun option -rdd or -dds

Look in the log file for details on the domain decomposition

For more information and tips for troubleshooting, please check the GROMACS

website at http://www.gromacs.org/Documentation/Errors

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Best regards,
Changwoon Jang,