gfortran

[Dominique Rousset <dominique.rousset@free.fr>]

Hello everyone,

I've been a silent subscriber to this list for the past 3+ months, and now, I 
am coming with my question...

I am benchmarking a fortran code of my own (simulation of seismic wave 
propagation)
whose output is a direct access binary file.
I just modified it a little from Intel fortran90 to gfortran.
I succesfully ran it at work on a PowerPC linux, an ultrasparc linux and a 
Pentium 4 (old, fully 32 bits) linux.  The results are consistent and 
consitent (not really equal, of course) to those obtained on Intel proc using 
Intel compiler.

I tested it at home on my Athlon64.  Dual boot one in 32 bits and the other 
one in 64 bits, both debian etch.

I am surprised that the output fiile in 64 bits mode is larger of 808 bytes.
It's just one excess byte per record. 

Any clue about that ?
Do you thing I must issue a bug report to the maintainer, to the upstream 
developer team ?

Thanks
D.

PS : computation time is 15% longer in 32 bits mode, using the same compiler 
options.
-- 
Dominique Rousset
dominique.rousset@free.fr