Re: [bgl-discuss] RE: [bgl-support #151] buffering

[William Gropp <gropp@xxxxxxxxxxx>]

This seems like exactly the place to use an IO library to help  
provide portable and efficient handling of the small requests.   
Waris, is that an option?  We could help provide either and MPI-IO or  
pnetCDF option.

Bill

On Dec 4, 2006, at 4:18 PM, Ray Loy wrote:

> > kamil wrote:
> > So you invoke UNIX read/write routines directly?  What is your  
> > request size
> > per call, on average?
> >
> > Kamil
>
>
> > waris wrote:
> >     We read/write in small chunks anywhere from 4-40 bytes.
> > We also open the file for 'r+' (reads and writes). I am told
> > that this can also have an affect on the buffering.
> >
> > Waris
>
>
> I just talked to Waris and he's using F90 IO routines.
> That's an awful lot of small writes.
>
>
> Ray
>
>
> - --------------------------------------------------------------------
> To add or remove yourself from this mailing list, use the 'notifyme'
> command on any BGL machine. To remove: notifyme -n, to add:  
> notifyme -y.

- --------------------------------------------------------------------
To add or remove yourself from this mailing list, use the 'notifyme'
command on any BGL machine. To remove: notifyme -n, to add: notifyme -y.