[gmx-users] mdrun don't write a checkpoint file

Menig, Simon simon.menig at tum.de
Thu Oct 6 14:23:17 CEST 2016


Thank you for your fast answer Justin

I looked up the log files but I found no error and my disc space is sufficient and the simulation seem to end normal. Could the Problem be that my Simulation time is shorter than 15 min (max 5000 steps) ? (Shouldn't it write a cpt file after the End of the simulation)

Parts of my log file:

Log file opened on Thu Oct  6 14:09:27 2016
Host: linux-286u  pid: 4384  rank ID: 0  number of ranks:  1
                       :-) GROMACS - gmx mdrun, 2016 (-:

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 Aldert van Buuren   Rudi van Drunen     Anton Feenstra    Gerrit Groenhof  
 Christoph Junghans   Anca Hamuraru    Vincent Hindriksen Dimitrios Karkoulis
    Peter Kasson        Jiri Kraus      Carsten Kutzner      Per Larsson    
  Justin A. Lemkul   Magnus Lundborg   Pieter Meulenhoff    Erik Marklund   
   Teemu Murtola       Szilard Pall       Sander Pronk      Roland Schulz   
  Alexey Shvetsov     Michael Shirts     Alfons Sijbers     Peter Tieleman  
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                           and the project leaders:
        Mark Abraham, Berk Hess, Erik Lindahl, and David van der Spoel

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GROMACS:      gmx mdrun, version 2016
Executable:   /usr/local/gromacs/bin/gmx
Data prefix:  /usr/local/gromacs
Working dir:  /home/simon/simu_test_cg/build_cg_membrane_test1
Command line:
  gmx mdrun -s input/ab26_wt_POPE_POPG_cg_eqi_1.tpr -o out_trr/ab26_wt_POPE_POPG_cg_eqi_1.trr -c output/ab26_wt_POPE_POPG_cg_eqi_1.gro -e output/ab26_wt_POPE_POPG_cg_eqi_1.edr -g output/ab26_wt_POPE_POPG_cg_eqi_1.log -cpo output/ab26_wt_POPE_POPG_cg_eqi_1 -v -cpt 1

GROMACS version:    2016
Precision:          single
Memory model:       64 bit
MPI library:        thread_mpi
OpenMP support:     enabled (GMX_OPENMP_MAX_THREADS = 32)
GPU support:        disabled
SIMD instructions:  AVX_256
FFT library:        fftw-3.3.4-sse2-avx
RDTSCP usage:       enabled
TNG support:        enabled
Hwloc support:      disabled
Tracing support:    disabled
Built on:           Do 1. Sep 09:46:51 CEST 2016
Built by:           simon at linux-286u [CMAKE]
Build OS/arch:      Linux 4.1.12-1-default x86_64
Build CPU vendor:   Intel
Build CPU brand:    Intel(R) Xeon(R) CPU E5-1620 0 @ 3.60GHz
Build CPU family:   6   Model: 45   Stepping: 7
Build CPU features: aes apic avx clfsh cmov cx8 cx16 htt lahf mmx msr nonstop_tsc pcid pclmuldq pdcm pdpe1gb popcnt pse rdtscp sse2 sse3 sse4.1 sse4.2 ssse3 tdt x2apic
C compiler:         /usr/bin/cc GNU 4.8.5
C compiler flags:    -mavx     -O3 -DNDEBUG -funroll-all-loops -fexcess-precision=fast  
C++ compiler:       /usr/bin/c++ GNU 4.8.5
C++ compiler flags:  -mavx    -std=c++0x   -O3 -DNDEBUG -funroll-all-loops -fexcess-precision=fast  


Running on 1 node with total 4 cores, 8 logical cores
Hardware detected:
  CPU info:
    Vendor: Intel
    Brand:  Intel(R) Xeon(R) CPU E5-1620 0 @ 3.60GHz
    Family: 6   Model: 45   Stepping: 7
    Features: aes apic avx clfsh cmov cx8 cx16 htt lahf mmx msr nonstop_tsc pcid pclmuldq pdcm pdpe1gb popcnt pse rdtscp sse2 sse3 sse4.1 sse4.2 ssse3 tdt x2apic
    SIMD instructions most likely to fit this hardware: AVX_256
    SIMD instructions selected at GROMACS compile time: AVX_256

  Hardware topology: Basic
    Sockets, cores, and logical processors:
      Socket  0: [   0   4] [   1   5] [   2   6] [   3   7]
 
-----------------------------------------
  Energies (kJ/mol)
           Bond       G96Angle    Proper Dih.        LJ (SR)   Coulomb (SR)
    1.36475e+04    2.16816e+04    1.59230e+03   -2.94378e+06   -2.60982e+04
      Potential Pressure (bar)   Constr. rmsd
   -2.93295e+06   -8.86450e+01    5.54635e-06


Steepest Descents converged to Fmax < 100 in 3325 steps
Potential Energy  = -2.9329548e+06
Maximum force     =  9.9675224e+01 on atom 3030
Norm of force     =  3.0542336e+00

	M E G A - F L O P S   A C C O U N T I N G

 NB=Group-cutoff nonbonded kernels    NxN=N-by-N cluster Verlet kernels
 RF=Reaction-Field  VdW=Van der Waals  QSTab=quadratic-spline table
 W3=SPC/TIP3p  W4=TIP4p (single or pairs)
 V&F=Potential and force  V=Potential only  F=Force only

 Computing:                               M-Number         M-Flops  % Flops
-----------------------------------------------------------------------------
 Pair Search distance check           38504.672646      346542.054    16.3
 NxN RF Elec. + LJ [V&F]               5384.910400      290785.162    13.7
 NxN LJ [V&F]                         33611.193952     1445281.340    68.2
 NxN RF Electrostatics [V&F]             11.133472         400.805     0.0
 Shift-X                                360.001075        2160.006     0.1
 Bonds                                  114.715825        6768.234     0.3
 Angles                                  98.420000       16534.560     0.8
 Propers                                  8.309175        1902.801     0.1
 Virial                                 360.150700        6482.713     0.3
 Lincs                                   27.923350        1675.401     0.1
 Lincs-Mat                              430.840200        1723.361     0.1
 Constraint-Vir                          13.961675         335.080     0.0
-----------------------------------------------------------------------------
 Total                                                 2120591.516   100.0
-----------------------------------------------------------------------------


     R E A L   C Y C L E   A N D   T I M E   A C C O U N T I N G

On 1 MPI rank, each using 8 OpenMP threads

 Computing:          Num   Num      Call    Wall time         Giga-Cycles
                     Ranks Threads  Count      (s)         total sum    %
-----------------------------------------------------------------------------
 Neighbor search        1    8       3325      25.303       1453.945  29.1
 Force                  1    8       3325      14.350        824.541  16.5
 NB X/F buffer ops.     1    8       3325       1.208         69.396   1.4
 Constraints            1    8       6649       0.464         26.688   0.5
 Rest                                          45.522       2615.757  52.4
-----------------------------------------------------------------------------
 Total                                         86.847       4990.327 100.0
-----------------------------------------------------------------------------

NOTE: 29 % of the run time was spent in pair search,
      you might want to increase nstlist (this has no effect on accuracy)


               Core t (s)   Wall t (s)        (%)
       Time:      694.774       86.847      800.0
               (steps/hour)
Performance:       137829.1
Finished mdrun on rank 0 Thu Oct  6 14:10:54 2016

________________________________________
Von: gromacs.org_gmx-users-bounces at maillist.sys.kth.se <gromacs.org_gmx-users-bounces at maillist.sys.kth.se> im Auftrag von Justin Lemkul <jalemkul at vt.edu>
Gesendet: Donnerstag, 6. Oktober 2016 13:55
An: gmx-users at gromacs.org
Betreff: Re: [gmx-users] mdrun don't write a checkpoint file

On 10/6/16 7:41 AM, Menig, Simon wrote:
> Hi,
>
>
> I am new to GROMACS and I wanted to run a Coars-Grain simulation but gmx mdrun doesn't write a checkpoint file and I found no solution for my Problem in the Docs or Internet. I hope someone can help me with this problem, I need this files for extending my Simulation (similar to Lysozyme tutorial) . I use GROMACS 5.1, the mdrun command I used is:
>
>
>
> gmx mdrun -s input/name.tpr -o out_trr/name.trr -c output/name.gro -e output/name.edr -g output/name.log -cpo output/name.cpt
>
>
> I also tried the -deffnm option
>
>
> Could this be a bug or is another parameter needed (tried -cpt option) ?
>

That command should produce a checkpoint file every 15 minutes, which is the
default behavior.  The only reasons that it wouldn't be written are if the run
terminated abnormally or if you ran out of disk space.  Either way, the .log
file or stderr/stdout should have informative information.

-Justin

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

Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalemkul at outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

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