[gmx-users] g_tune_pme_mpi is not compatible to mdrun_mpi
Carsten Kutzner
ckutzne at gwdg.de
Mon Sep 29 16:34:15 CEST 2014
Hi,
I see where the problem is.
There is an initial check in g_tune_pme to make sure that parallel
runs can be executed at all. This is being run with the automatic
number of PME-only ranks, which is 11 for your input file.
Unfortunately, this results in 37 PP ranks, for which no domain
decomposition can be found.
At some point in the past we discussed that this could happen
and it should be fixed. Will open a bug entry.
Thanks,
Carsten
On 29 Sep 2014, at 15:36, Ebert Maximilian <m.ebert at umontreal.ca> wrote:
> Hi,
>
> this ist he command:
>
> setenv MDRUN mdrun_mpi
>
> g_tune_pme_mpi -np 48 -s ../eq_nvt/1ZG4_nvt.tpr -launch
>
>
> Here the output of perf.out
>
> ------------------------------------------------------------
>
> P E R F O R M A N C E R E S U L T S
>
> ------------------------------------------------------------
> g_tune_pme_mpi for Gromacs VERSION 5.0.1
> Number of ranks : 48
> The mpirun command is : mpirun
> Passing # of ranks via : -np
> The mdrun command is : mdrun_mpi
> mdrun args benchmarks : -resetstep 100 -o bench.trr -x bench.xtc -cpo bench.cpt -c bench.gro -e bench.edr -g bench.log
> Benchmark steps : 1000
> dlb equilibration steps : 100
> mdrun args at launchtime:
> Repeats for each test : 2
> Input file : ../eq_nvt/1ZG4_nvt.tpr
> PME/PP load estimate : 0.151964
> Number of particles : 39489
> Coulomb type : PME
> Grid spacing x y z : 0.114561 0.114561 0.114561
> Van der Waals type : Cut-off
>
> Will try these real/reciprocal workload settings:
> No. scaling rcoulomb nkx nky nkz spacing rvdw tpr file
> 0 1.000000 1.200000 72 72 72 0.120000 1.200000 ../eq_nvt/1ZG4_nvt_bench00.tpr
> 1 1.100000 1.320000 64 64 64 0.132000 1.320000 ../eq_nvt/1ZG4_nvt_bench01.tpr
> 2 1.200000 1.440000 60 60 60 0.144000 1.440000 ../eq_nvt/1ZG4_nvt_bench02.tpr
>
> Note that in addition to the Coulomb radius and the Fourier grid
> other input settings were also changed (see table above).
> Please check if the modified settings are appropriate.
>
> Individual timings for input file 0 (../eq_nvt/1ZG4_nvt_bench00.tpr):
> PME ranks Gcycles ns/day PME/f Remark
>
> ------------------------------------------------------------
> Cannot run the benchmark simulations! Please check the error message of
> mdrun for the source of the problem. Did you provide a command line
> argument that neither g_tune_pme nor mdrun understands? Offending command:
>
> mpirun -np 48 mdrun_mpi -npme 11 -s ../eq_nvt/1ZG4_nvt_bench00.tpr -resetstep 100 -o bench.trr -x bench.xtc -cpo bench.cpt -c bench.gro -e bench.edr -g bench.log -nsteps 1 -quiet
>
>
>
> and here are parts of the bench.log:
>
> Log file opened on Mon Sep 29 08:56:38 2014
> Host: node-e1-67 pid: 24470 rank ID: 0 number of ranks: 48
> GROMACS: gmx mdrun, VERSION 5.0.1
>
> GROMACS is written by:
> Emile Apol Rossen Apostolov Herman J.C. Berendsen Par Bjelkmar
> Aldert van Buuren Rudi van Drunen Anton Feenstra Sebastian Fritsch
> Gerrit Groenhof Christoph Junghans Peter Kasson 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 Christian Wennberg Maarten Wolf
> and the project leaders:
> Mark Abraham, Berk Hess, Erik Lindahl, and David van der Spoel
>
> Copyright (c) 1991-2000, University of Groningen, The Netherlands.
> Copyright (c) 2001-2014, The GROMACS development team at
> Uppsala University, Stockholm University and
> the Royal Institute of Technology, Sweden.
> check out http://www.gromacs.org for more information.
>
> GROMACS is free software; you can redistribute it and/or modify it
> under the terms of the GNU Lesser General Public License
> as published by the Free Software Foundation; either version 2.1
> of the License, or (at your option) any later version.
>
> GROMACS: gmx mdrun, VERSION 5.0.1
> Executable: /home/apps/Logiciels/gromacs/gromacs-5.0.1/bin/gmx_mpi
> Library dir: /home/apps/Logiciels/gromacs/gromacs-5.0.1/share/gromacs/top
> Command line:
> mdrun_mpi -npme 11 -s ../eq_nvt/1ZG4_nvt_bench00.tpr -resetstep 100 -o bench.trr -x bench.xtc -cpo bench.cpt -c bench.gro -e bench.edr -g bench.log -nsteps 1 -quiet
>
> Gromacs version: VERSION 5.0.1
> Precision: single
> Memory model: 64 bit
> MPI library: MPI
> OpenMP support: enabled
> GPU support: disabled
> invsqrt routine: gmx_software_invsqrt(x)
> SIMD instructions: SSE4.1
> FFT library: fftw-3.3.3-sse2
> RDTSCP usage: enabled
> C++11 compilation: enabled
> TNG support: enabled
> Tracing support: disabled
> Built on: Tue Sep 23 09:58:07 EDT 2014
> Built by: rqchpbib at briaree1 [CMAKE]
> Build OS/arch: Linux 2.6.32-71.el6.x86_64 x86_64
> Build CPU vendor: GenuineIntel
> Build CPU brand: Intel(R) Xeon(R) CPU X5650 @ 2.67GHz
> Build CPU family: 6 Model: 44 Stepping: 2
> Build CPU features: aes apic clfsh cmov cx8 cx16 htt lahf_lm mmx msr nonstop_tsc pcid pclmuldq pdcm pdpe1gb popcnt pse rdtscp sse2 sse3 sse4.1 sse4.2 ssse3
> C compiler: /RQusagers/apps/Logiciels/gcc/4.8.1/bin/gcc GNU 4.8.1
> C compiler flags: -msse4.1 -Wno-maybe-uninitialized -Wextra -Wno-missing-field-initializers -Wno-sign-compare -Wpointer-arith -Wall -Wno-unused -Wunused-value -Wunused-parameter -fomit-frame-pointer -funroll-all-loops -fexcess-precision=fast -Wno-array-bounds -O3 -DNDEBUG
> C++ compiler: /RQusagers/apps/Logiciels/gcc/4.8.1/bin/g++ GNU 4.8.1
> C++ compiler flags: -msse4.1 -std=c++0x -Wextra -Wno-missing-field-initializers -Wpointer-arith -Wall -Wno-unused-function -fomit-frame-pointer -funroll-all-loops -fexcess-precision=fast -Wno-array-bounds -O3 -DNDEBUG
> Boost version: 1.55.0 (internal)
>
>
> ....
>
>
> n = 0
> E-zt:
> n = 0
> swapcoords = no
> adress = FALSE
> userint1 = 0
> userint2 = 0
> userint3 = 0
> userint4 = 0
> userreal1 = 0
> userreal2 = 0
> userreal3 = 0
> userreal4 = 0
> grpopts:
> nrdf: 10175.6 70836.4
> ref-t: 304.65 304.65
> tau-t: 0.5 0.5
> annealing: Single Single
> annealing-npoints: 4 4
> annealing-time [0]: 0.0 200.0 300.0 750.0
> annealing-temp [0]: 10.0 100.0 100.0 304.6
> annealing-time [1]: 0.0 200.0 300.0 750.0
> annealing-temp [1]: 10.0 100.0 100.0 304.6
> acc: 0 0 0
> nfreeze: N N N
> energygrp-flags[ 0]: 0
>
> Overriding nsteps with value passed on the command line: 1 steps, 0.002 ps
>
>
> Initializing Domain Decomposition on 48 ranks
> Dynamic load balancing: auto
> Will sort the charge groups at every domain (re)decomposition
> Initial maximum inter charge-group distances:
> two-body bonded interactions: 0.422 nm, LJ-14, atoms 1444 1452
> multi-body bonded interactions: 0.422 nm, Proper Dih., atoms 1444 1452
> Minimum cell size due to bonded interactions: 0.464 nm
> Maximum distance for 5 constraints, at 120 deg. angles, all-trans: 0.218 nm
> Estimated maximum distance required for P-LINCS: 0.218 nm
>
> -------------------------------------------------------
> Program mdrun_mpi, VERSION 5.0.1
> Source code file: /RQusagers/rqchpbib/stubbsda/gromacs-5.0.1/src/gromacs/mdlib/domdec_setup.c, line: 728
>
> Fatal error:
> The number of ranks you selected (37) contains a large prime factor 37. In most cases this will lead to bad performance. Choose a number with smaller prime factors or set the decomposition (option -dd) manually.
> For more information and tips for troubleshooting, please check the GROMACS
> website at http://www.gromacs.org/Documentation/Errors
> -------------------------------------------------------
> -----Original Message-----
> From: gromacs.org_gmx-users-bounces at maillist.sys.kth.se [mailto:gromacs.org_gmx-users-bounces at maillist.sys.kth.se] On Behalf Of Carsten Kutzner
> Sent: Montag, 29. September 2014 15:23
> To: gmx-users at gromacs.org
> Subject: Re: [gmx-users] g_tune_pme_mpi is not compatible to mdrun_mpi
>
> Hi,
>
> is this the only output?
>
> Don't you get a perf.out file that lists which settings are optimal?
>
> What exactly was the command line you used?
>
> Carsten
>
>
> On 29 Sep 2014, at 15:01, Ebert Maximilian <m.ebert at umontreal.ca> wrote:
>
>> Hi,
>>
>> I just tried that and I got the following error message (bench.log). Any idea what could be wrong?
>>
>> Thank you very much,
>>
>> Max
>>
>> Initializing Domain Decomposition on 48 ranks Dynamic load balancing:
>> auto Will sort the charge groups at every domain (re)decomposition
>> Initial maximum inter charge-group distances:
>> two-body bonded interactions: 0.422 nm, LJ-14, atoms 1444 1452
>> multi-body bonded interactions: 0.422 nm, Proper Dih., atoms 1444 1452
>> Minimum cell size due to bonded interactions: 0.464 nm Maximum
>> distance for 5 constraints, at 120 deg. angles, all-trans: 0.218 nm
>> Estimated maximum distance required for P-LINCS: 0.218 nm
>>
>> -------------------------------------------------------
>> Program mdrun_mpi, VERSION 5.0.1
>> Source code file:
>> /RQusagers/rqchpbib/stubbsda/gromacs-5.0.1/src/gromacs/mdlib/domdec_se
>> tup.c, line: 728
>>
>> Fatal error:
>> The number of ranks you selected (37) contains a large prime factor 37. In most cases this will lead to bad performance. Choose a number with smaller prime factors or set the decomposition (option -dd) manually.
>> For more information and tips for troubleshooting, please check the
>> GROMACS website at http://www.gromacs.org/Documentation/Errors
>> -------------------------------------------------------
>>
>> -----Original Message-----
>> From: gromacs.org_gmx-users-bounces at maillist.sys.kth.se
>> [mailto:gromacs.org_gmx-users-bounces at maillist.sys.kth.se] On Behalf
>> Of Carsten Kutzner
>> Sent: Donnerstag, 25. September 2014 19:29
>> To: gmx-users at gromacs.org
>> Subject: Re: [gmx-users] g_tune_pme_mpi is not compatible to mdrun_mpi
>>
>> Hi,
>>
>> don't invoke g_tune_pme with 'mpirun', because it is a serial executable that itself invokes parallel MD runs for testing.
>>
>> use
>> export MDRUN=mdrun_mpi
>>
>> g_tune_pme -np 24 -s 1ZG4_nvt.tpr -launch
>>
>> see also
>>
>> g_tune_pme -h
>>
>> You may need to recompile g_tune_pme without MPI enabled (depends on
>> your queueing system)
>>
>> Best,
>> Carsten
>>
>>
>> On 25 Sep 2014, at 15:10, Ebert Maximilian <m.ebert at umontreal.ca> wrote:
>>
>>> Dear list,
>>>
>>> I tried using g_tune_pme_mpi with the command:
>>>
>>> mpirun -np 24 g_tune_pme_mpi -np 24 -s 1ZG4_nvt.tpr -launch
>>>
>>> on GROMACS 5.0.1 but I get the following error message:
>>> ---------------------------------------------------------------------
>>> -
>>> ---- mpirun was unable to launch the specified application as it
>>> could not find an executable:
>>>
>>> Executable: mdrun
>>> Node: xxxx
>>>
>>> while attempting to start process rank 0.
>>> ---------------------------------------------------------------------
>>> -
>>> ----
>>> 24 total processes failed to start
>>>
>>>
>>> Any idea why this is? Shouldn't g_tune_pme_mpi call mdrun_mpi instead?
>>>
>>> Thank you very much,
>>>
>>> Max
>>> --
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>>
>>
>> --
>> Dr. Carsten Kutzner
>> Max Planck Institute for Biophysical Chemistry Theoretical and
>> Computational Biophysics Am Fassberg 11, 37077 Goettingen, Germany
>> Tel. +49-551-2012313, Fax: +49-551-2012302
>> http://www.mpibpc.mpg.de/grubmueller/kutzner
>> http://www.mpibpc.mpg.de/grubmueller/sppexa
>>
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>
>
> --
> Dr. Carsten Kutzner
> Max Planck Institute for Biophysical Chemistry Theoretical and Computational Biophysics Am Fassberg 11, 37077 Goettingen, Germany Tel. +49-551-2012313, Fax: +49-551-2012302 http://www.mpibpc.mpg.de/grubmueller/kutzner
> http://www.mpibpc.mpg.de/grubmueller/sppexa
>
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> Gromacs Users mailing list
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--
Dr. Carsten Kutzner
Max Planck Institute for Biophysical Chemistry
Theoretical and Computational Biophysics
Am Fassberg 11, 37077 Goettingen, Germany
Tel. +49-551-2012313, Fax: +49-551-2012302
http://www.mpibpc.mpg.de/grubmueller/kutzner
http://www.mpibpc.mpg.de/grubmueller/sppexa
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