[gmx-users] Range checking error

Gaurav Chopra gauravc at stanford.edu
Mon Mar 13 23:46:29 CET 2006


I am doing a steepest descent for the initial mdrun for a peptide and it 
gives me the following error. Please advice.

Program mdrun, VERSION 3.3
Source code file: nsgrid.c, line: 226

Range checking error:
Explanation: During neighborsearching, we assign each particle to a grid
based on its coordinates. If your system contains collisions or parameter
errors that give particles very high velocities you might end up with some
coordinates being +-Infinity or NaN (not-a-number). Obviously, we cannot
put these on a grid, so this is usually where we detect those errors.
Make sure your system is properly energy-minimized and that the potential
energy seems reasonable before trying again.

Variable ci has value -2147483648. It should have been within [ 0 .. 2000 ]
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