Re: [AMBER] Amber11 using MPICH (parallel install problem)

From: Jason Swails <jason.swails.gmail.com>
Date: Thu, 7 Jul 2011 08:27:10 -0600

You need to start an mpd daemon before using mpiexec or mpirun. You need to execute the command

mpdboot

Before sander.MPI and you need to run

mpdallexit

After to clean them up. Note that newer mpich2 versions have gotten rid of this "feature".

HTH,
Jason

--
Jason M. Swails
Quantum Theory Project,
University of Florida
Ph.D. Candidate
352-392-4032
On Jul 7, 2011, at 8:08 AM, mish <smncbr.gmail.com> wrote:
> Thank a lot. configure_mpich2 worked really well but the problem I have now
> is something strange. I can see some reports about it earlier but no
> solution or further discussion in the post. Also in my sace sander.MPI works
> well when I test it for one thread:
> sander.MPI -O -i mdt1.in -o md1.out -p disach4.top -c optim1_5.rst -x
> test.trj
> 
> then it works. when i use it with mpiexec fir 5 thread in a pbs it produces
> error :
> 
> 
> mpiexec_deca12-2.cmp.mnx.jp: cannot connect to local mpd
> (/tmp/mpd2.console_mish); possible causes:
>  1. no mpd is running on this host
>  2. an mpd is running but was started without a "console" (-n option)
> In case 1, you can start an mpd on this host with:
>    mpd &
> and you will be able to run jobs just on this host.
> For more details on starting mpds on a set of hosts, see
> the MPICH2 Installation Guide.
> 
> What could be the possible mistake ?
> 
> Sincerely
> Mish
> 
> On Wed, Jul 6, 2011 at 9:36 PM, David A Case <case.biomaps.rutgers.edu>wrote:
> 
>> On Wed, Jul 06, 2011, mish wrote:
>>> 
>>> Dies anyone have some idea how to properly compile MPICH so that it can
>> work
>>> here or how to modify ./configure to make in working in this condition.
>> 
>> Please see the "configure_openmpi" or "configure_mpich2" scripts in
>> $AMBERHOME/AmberTools/src.  These configure and install MPI versions that
>> should work with Amber, and will not interfere with other MPI installations
>> you may have.
>> 
>> ...dac
>> 
>> 
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>> 
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Received on Thu Jul 07 2011 - 07:30:11 PDT
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