priya thiyagarajan wrote:

hello sir,

Thanks for your kind reply..

i tried like what you suggest..
i used the command

mdrun -s md60.tpr -cpi state.cpt -o md60.trr -x traj.xtc -e md60.edr -c md60.gro -g md60.log

to extend my simulation..
but again i got error as follows


Reading file md60.tpr, VERSION 4.5.5 (single precision)
Starting 8 threads

Reading checkpoint file state.cpt generated: Fri Feb 17 19:46:58 2012



-------------------------------------------------------
Program mdrun, VERSION 4.5.5
Source code file: checkpoint.c, line: 1757

Fatal error:
Failed to lock: md60.log. Function not implemented.
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors
-------------------------------------------------------



please help me with your answer...

i dono how to resolve this problem..


Use -noappend and just concatenate your output later. Something in the filesystem thinks your .log file is still in use.

-Justin

--
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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