Re: CPU USAGE

From: Axel Kohlmeyer (akohlmey_at_cmm.chem.upenn.edu)
Date: Sun Jul 19 2009 - 11:15:14 CDT

On Sat, 2009-07-18 at 21:07 -0700, mahmoud mirzaei wrote:

dear mahmoud,

i beg to disagree. your _real_ problems lie in not paying
attention, in not using some common sense, and in not being
able to ask questions that people would be able to answer
in a useful way.

just answer the following questions for yourself:
how should anybody know that you were using NAMD
and not gromacs, if you state you installed gromacs?

if NAMD would not run in parallel as you claim, then
there would be a _lot_ of people complaining about it, right?
so as a consequence, the problem much be something that you
do or don't do. but how should anybody be able to
tell you what you are doing wrong, if you are not giving
any details of what you do? telepathy?

have you considered, that software packages like NAMD offer
a _lot_ of documentation and tutorials and that quite often
the answer that you are seeking, is already there?
thus please show some respect to the people who put in the
effort to write this all down (it is a _lot_ of work) and
look around. files like, e.g., README have their name for
a special purpose after all: you are supposed to read them.

cheers,
   axel.

> Dear Axel,
>
>
> Thanks for your e-mail.
>
> I real installed NAMD and have problems with the CPU Usage...!
>
>
> If you have information to solve this problem, please let me know!
>
>
>
> Thanks,
> Mahmoud<
>
> --- On Sat, 7/18/09, Axel Kohlmeyer <akohlmey_at_cmm.chem.upenn.edu>
> wrote:
>
>
> From: Axel Kohlmeyer <akohlmey_at_cmm.chem.upenn.edu>
> Subject: Re: namd-l: CPU USAGE
> To: "mahmoud mirzaei" <nanogroup_at_ymail.com>
> Cc:
> Date: Saturday, July 18, 2009, 4:50 PM
>
> On Sat, 2009-07-18 at 09:14 -0700, mahmoud mirzaei wrote:
>
> dear mahmoud,
>
> your problem sounds like a PEBCAC-type problem,
> and it is impossible to give other advice than
> having a closer look at the installation instructions
> and documentation, and then post to the _gromacs_
> mailing list in case you need further help with that.
>
> this is the NAMD mailing list and (most?) people here would
> appreciate it, if you would only post questions that are
> related to NAMD, its implementation, and use.
>
> thanks,
> axel.
>
> > Hello Dear NAMD Users,
> >
> >
> >
> > I have installed Gromacs 4 on a Quad PC.
> >
> > However, when I RUN the example (nanotube), the CPU usage is
> just 25%.
> > It means that just one of the four CPUs are used.
> >
> > Please help me how I can change the status of calculation
> for using
> > all of the four CPUs.
> >
> > Thank you very much in advance.
> >
> > Mahmoud<
> >
>
> --
> =======================================================================
> Axel
> Kohlmeyer akohlmey_at_cmm.chem.upenn.edu http://www.cmm.upenn.edu
> Center for Molecular Modeling -- University of
> Pennsylvania
> Department of Chemistry, 231 S.34th Street, Philadelphia, PA
> 19104-6323
> tel: 1-215-898-1582, fax: 1-215-573-6233, office-tel:
> 1-215-898-5425
> =======================================================================
> If you make something idiot-proof, the universe creates a
> better idiot.
>
>
>

-- 
=======================================================================
Axel Kohlmeyer   akohlmey_at_cmm.chem.upenn.edu   http://www.cmm.upenn.edu
   Center for Molecular Modeling   --   University of Pennsylvania
Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323
tel: 1-215-898-1582,  fax: 1-215-573-6233,  office-tel: 1-215-898-5425
=======================================================================
If you make something idiot-proof, the universe creates a better idiot.

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