[gmx-users] 3.3.2 Error when using the mpi option

Triguero, Luciano O ltriguero at miami.edu
Tue Oct 9 19:27:16 CEST 2007

Hi Erik,
Thank for your help.
Dr. Luciano Triguero College of Art and Science Department of Physics and Chemistry Cox Science Building 1301 Memorial Drive, Room 146 P.O Box 249118 Coral Gables, FL 33124-0431 Cellular: 305-904-2419 Office: 305-284-3938


From: gmx-users-bounces at gromacs.org on behalf of Erik Lindahl
Sent: Tue 10/9/2007 1:01 PM
To: Discussion list for GROMACS users
Subject: Re: [gmx-users] 3.3.2 Error when using the mpi option

On Oct 9, 2007, at 6:21 PM, Triguero, Luciano O wrote:

> Hi,
> I am trying to compile version 3.3.2 in the parallel mode. I use 
> the following options to configure:
> ./configure --prefix=dir --disable-float -enable-mpi
> and receive the following error message:
> checking size of int... configure: error: cannot compute sizeof (int)
> Note: The non parallel version compiles without errors.
> Any help?
> Luciano

Well, even if you probably don't appreciate it right now it's a very 
good thing (TM). Gromacs tries to use your default MPI compilers 
(typically mpicc, but you can set it in the variable MPICC), but for 
some reason it isn't even possible to compile a small program to 
check the size of an integer.

Check config.log and try to find out what's wrong with your MPI-
enabled compiler.


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