SMD Constant velocity pulling

From: Roshan Shrestha (
Date: Wed Jul 27 2016 - 12:59:49 CDT

Hello everyone,
While running SMD constant velocity pulling of Ubiquitin, my simulation
stopped abruptly with following error:
Error: Constraint failure in RATTLE algorithm for atom 12261
Error: Constraint failure ;simulation has become unstable
Why these errors showed up and how to eliminate them?

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