Alif M Latif wrote:
Dear GROMACS citizens;

I'm trying to do a conjugated gradient energy minimization after steepest descent on my structure. But when i executed the grompp, the error came out like this;

ERROR: can not do Conjugate Gradients with constraints (97731)
-------------------------------------------------------
Program grompp, VERSION 3.3
Source code file: grompp.c, line: 1088

Fatal error:
There were 1 error(s) processing your input
-------------------------------------------------------

Can somebody tell me what this means?. Is there any limit for number of constraints? Thanks for reading. Advices, clues or suggestions are greatly appreciated..:)

It means you can't use the conjugate gradient optimizer when you have enabled constraints. This is because that combination is not implemented. Use a different optimizer or don't use constraints.

Mark
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