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

[Jerry DeLisle]

Rob wrote:
> Hi,
> 
> When I compile my software with Gfortran (from SVN,
> 4.1.2 20061215 (prerelease)), the print output to
> the terminal is extremely slow and comes in bursts.
> I guess Gfortran defaults to some kind of buffering.
> 
> When I use another compiler (e.g. Intel's ifort),
> then output comes immediately without delay. So
> obviously the slow I/O is related to Gfortran.
> 
> Is there a way to tell Gfortran to stop or reduce
> the I/O buffering?

What system are you running on?

Can you give an example of the code producing the output that you are observing?