Myunggi Yi wrote:
Thank you for your answer, but I can't really get you.
I am using gromacs 3.3.3. <http://3.3.3.> on CentOS with AMD64 clusters with infiniband connection. I have both INTEL and GNU copilers (gcc4.1.2 and gcc3.4) and openmpi (intel and gnu).
You are saying I don't have install fftw by myself, aren't you?
Then how can I compile? What is the best option for the performance?
I did the followings.

======================================
./configure --prefix=$HOME/gromacs/ --with-fft=fftw2
make
make install

make clean
./configure --enable-mpi --disable-nice $HOME/gromacs/ --with-fft=fftw2 --program-suffix=_mpi
make mdrun
make install-mdrun
======================================

Is this wrong?

Seems reasonable, did it work?

Can I compile it with intel compiler?

It is easy to use gcc, and definitely do *not* use gcc-4.1.2; use 3.4. There are step-by-step instructions on how to install both FFTW and Gromacs on the Gromacs website:

http://www.gromacs.org/content/view/23/33/

Following these directly will give you the standard installation, in serial and parallel, and single and double precision, if you choose.

-Justin


I'm sorry. I have so many questions.
Please let me know how to compile it.

Thank you.


On Thu, Sep 4, 2008 at 11:40 AM, Roland Schulz <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:

    Hi,

    Gromacs has it's own parallel FFT which only uses FFTW for the local
    FFT. Thus a non-MPI FFTW is fine. and FFTW 3 is faster than 2.

    Roland

    On Thu, Sep 4, 2008 at 8:53 AM, Myunggi Yi <[EMAIL PROTECTED]
    <mailto:[EMAIL PROTECTED]>> wrote:

        Dear gmx users,

        fftw3 seems doesn't support MPI.
        Why is the gromacs configuration default fftw3 not fftw2?
        Which version should I use for parallel computing?

        Thank you.


-- Best wishes,

        Myunggi Yi
        ==================================
        KLB 419
        Institute of Molecular Biophysics
        Florida State University
        Tallahassee, FL 32306

        Office: (850) 645-1334
        http://www.scs.fsu.edu/~myunggi <http://www.scs.fsu.edu/%7Emyunggi>
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    <http://cmb.ornl.gov>

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--
Best wishes,

Myunggi Yi
==================================
KLB 419
Institute of Molecular Biophysics
Florida State University
Tallahassee, FL 32306

Office: (850) 645-1334
http://www.scs.fsu.edu/~myunggi
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>


------------------------------------------------------------------------

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

Justin A. Lemkul
Graduate Research Assistant
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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