[Beowulf] fftw2, mpi, from 32 bit to 64 and fortran

Gus Correa gus at ldeo.columbia.edu
Tue Aug 5 00:37:38 EDT 2008


Salve Ricardo Reis and list


Ricardo Reis wrote:

>
>  Hi all
>
>  After backtracing and lots of going around I found out the problem. 
> The routine to calculate the fft had a parameter for using or not 
> using a buffer array which I wasn't passing through.
>
>  Thanks all for your help and sorry to disturbe.
>
>  there should be a way to force the fortan compiler to check every 
> variable is passed in the interface... damn it.
>
Fortran 90 (and later) has this capability with module interfaces, which 
resemble to C function prototypes.
However, I don't think FFTW uses it, although I haven't used FFTW in a 
while to be sure about it.
Smuggling various parameter types across the same subroutine interface 
seem to have been a desired feature of
older Fortran.

Are there any Fortran compilers that can actually check the subroutine 
parameter number, type,
array dimensions, etc, through mere compilation flags? 
I don't remember any, the language features are probably not enough to 
ensure such checks
(except for Fortran 90 as noted above).

Glad to know your code now works!

Gus Correa

-- 
---------------------------------------------------------------------
Gustavo J. Ponce Correa, PhD - Email: gus at ldeo.columbia.edu
Lamont-Doherty Earth Observatory - Columbia University
P.O. Box 1000 [61 Route 9W] - Palisades, NY, 10964-8000 - USA
---------------------------------------------------------------------

>  Greets,
>
>  Ricardo Reis
>
>  'Non Serviam'
>
>  PhD student @ Lasef
>  Computational Fluid Dynamics, High Performance Computing, Turbulence
>  http://www.lasef.ist.utl.pt
>
>  &
>
>  Cultural Instigator @ Rádio Zero
>  http://www.radiozero.pt
>
>  http://www.flickr.com/photos/rrei
> s/
>
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