Dear Carlos: Are you using a .top file from gromacs 5 with your gromacs 4 runs? If so, try regenerating your topology (and .itp files) using gromacs 4 (with GMXLIB set correctly). Not sure if that would even cause a problem, but it seems like it probably would and is the only thing that comes to mind.
If that is not the issue, then do any of the other commands work without a segfault (e.g. gmxcheck)? Chris. ________________________________________ From: gromacs.org_gmx-users-boun...@maillist.sys.kth.se <gromacs.org_gmx-users-boun...@maillist.sys.kth.se> on behalf of Carlos Navarro Retamal <cnava...@utalca.cl> Sent: 21 May 2015 11:55 To: gmx-us...@gromacs.org Subject: [gmx-users] Segmentation fault (core dumped) version 4.6.* Dear gmx users, In order to run my simulations, i usually used the 5.0.* version of gromacs without problems, but since i want to performed umbrella sampling simulations (and since the option pull_geometry=position is not available for the latest versions) For that, i installed the 4.6.7 version of gromacs. The installation went without issue, but every time i used a command from gromacs i got the Segmentation fault (core dumped) error: Like for example, by using this command line: grompp -f npt_production.mdp -c npt_equilibration.gro -p topol.top -o npt_production.tpr i got this: Option Filename Type Description ------------------------------------------------------------ -f npt_production.mdp Input grompp input file with MD parameters -po mdout.mdp Output grompp input file with MD parameters -c npt_equilibration.gro Input Structure file: gro g96 pdb tpr etc. -r conf.gro Input, Opt. Structure file: gro g96 pdb tpr etc. -rb conf.gro Input, Opt. Structure file: gro g96 pdb tpr etc. -n index.ndx Input, Opt. Index file -p topol.top Input Topology file -pp processed.top Output, Opt. Topology file -o npt_production.tpr Output Run input file: tpr tpb tpa -t traj.trr Input, Opt. Full precision trajectory: trr trj cpt -e ener.edr Input, Opt. Energy file -ref rotref.trr In/Out, Opt. Full precision trajectory: trr trj cpt Option Type Value Description ------------------------------------------------------ -[no]h bool no Print help info and quit -[no]version bool no Print version info and quit -nice int 0 Set the nicelevel -[no]v bool no Be loud and noisy -time real -1 Take frame at or first after this time. -[no]rmvsbds bool yes Remove constant bonded interactions with virtual sites -maxwarn int 0 Number of allowed warnings during input processing. Not for normal use and may generate unstable systems -[no]zero bool no Set parameters for bonded interactions without defaults to zero instead of generating an error -[no]renum bool yes Renumber atomtypes and minimize number of atomtypes Segmentation fault (core dumped) That is not telling me anything useful :/ I tried also installing the 4.6.3, but sadly i have the same problems with this version. Hope someone can help me. Best, Carlos -- Carlos Navarro Retamal Bioinformatics Engineering Ph. D (c) Applied Sciences. Center of Bioinformatics and Molecular Simulations. CBSM University of Talca Av. Lircay S/N, Talca, Chile T: (+56) 712201 798 E: carlos.navarr...@gmail.com or cnava...@utalca.cl -- 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.