FWIW, I'm not a fortran expert, but if you built your Fortran libraries with g77 and then tried to link against them with gfortran, you might run into problems.

My advice would be to use a single fortran compiler for building everything: Open MPI, your libraries, your apps. I prefer gfortran because it's more modern, but I have not done any performance evaluations of gfortran vs. g77 -- I have heard [unverified] anecdotes that gfortran is "slower" than g77 -- google around and see what the recent buzz is.

FWIW: I tend to use the gnu suite from http://hpc.sourceforge.net/ -- it contains pre-built gcc/g++/gfortran binaries and libraries for Leopard.


On May 5, 2008, at 2:59 PM, Linwei Wang wrote:

Dear Reeder,

   It does not work. I do think they are from the fortran programs
I'm using (they are files included from the BLACS installation
package, not written by my own.

The thing is last time when I was using g77, it caused no problem...

   thanks for  your help.

   Linwei.

On May 5, 2008, at 2:33 PM, Doug Reeder wrote:

_s_wsle, _e_wsle

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