[gmx-users] WARNING no output error while dumping structures with trjconv from MD.trr

Tsjerk Wassenaar tsjerkw at gmail.com
Sat May 21 13:53:25 CEST 2016

Hi Antara,

You indicate you want the frame at 27ns (-dump 27000), but that's not in
the trajectory. The suggestion is to ask for a frame that is in, like -dump


On May 21, 2016 13:09, "Antara mazumdar" <antara.mazumdar at igib.in> wrote:

Dear gromacs users,

   I was trying to dump structures from MD.trr using trjconv. The MD.trr
has 0ns to 382ns of data. (i checked the MD.log file also).  However, when
i try to dump structures beyond 25ns, with the following command :
*gmx trjconv mpi -f MD.trr -dump 27000.000 -dt 1000 -s MD.tpr -b 20000.000*

*it gives the following error :WARNING no output, last frame read at

I have also tried to check with gmxcheck but it only runs till 20ns.

trjconv and or gmxcheck did not give any error with MD.xtc which was
generated during the simulation.

I require the MD.trr as i  need velocity and force information for my

Kindly suggest something!!
Kind Regards,

Junior research fellow(project)
Systems biology group
CSIR-Institute of Genomics & Integrative Biology
South Campus
New Delhi -  110020
M : +91-9717970040
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