I/O slow (buffered?) ; can I change this?

[Bud Davis]

> This is on an alpha system, for which at present
> the only available compiler is GFortran.
> 
.....
> 
> So I don't have a short piece of code that
> demonstrates the slow I/O. I only compare the
> behaviour of the executable on my alpha system with
> Gfortran, and the same executable on Linux/Pentium
> system compiled with Intel's ifort.
> 
> On the Linux system, the output comes gradually,
> but on the alpha system it comes in bursts.
> 
 

you are also comparing two different hardware
platforms running two different operating systems.

the 'bursts' may be an artifact of the alpha's paging
or scheduling algorithm(s).  does your application
swap ?

with all that said, if you can give us some more
information, and it is a gfortran problem, then we
will in all likelyhood fix it.


regards,
bud