Dear Rahul, I've never worked with gmx-2016, but the error message is extremely clear. Therefore I will skip the explanation and just give you the solution. Rename the old tpr as md_old.tpr (or something or the sort) and the new extended one as md.tpr. Then it shouldn't complain because all run files have the same name (md.*) and appending will raise no problems.
Best regards, /J On Fri, Apr 7, 2017 at 10:54 AM, RAHUL SURESH <drrahulsur...@gmail.com> wrote: > I want to extend my simulation for another 15ns. Previously generated files > are md.log, md.xtc, md.edr and md.tpr. > > I used the following commands > > > > *gmx convert-tpr -s md.tpr -extend 15000 -o 25nsmd.tpr* > > > *gmx mdrun -s 25nsmd.tpr -cpi md.cpt* > I get the following error > > > > > > > > > > > > > *Fatal error:File appending requested, but 2 of the 3 output files are not > present or arenamed differently. For safety reasons, GROMACS-2016 and later > only allows fileappending to be used when all files have the same names as > they had in theoriginal run. Checkpointing is merely intended for plain > continuation of runs.For safety reasons you must specify all file names > (e.g. with -deffnm), andall these files must match the names used in the > run prior to checkpointingsince we will append to them by default. If the > files are not available, youcan add the -noappend flag to mdrun and write > separate new parts. For mereconcatenation of files, you should use the gmx > trjcat tool instead.* > The 2 file missing are > md.edr > md.xtc > > Here I haven't changed any file name then why do i get this error? > -- > Gromacs Users mailing list > > * Please search the archive at http://www.gromacs.org/ > Support/Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or > send a mail to gmx-users-requ...@gromacs.org. > -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.