[saga-rg] proposal for extended file IO

[Andre Merzky]

Quoting [Andrei Hutanu] (Jun 14 2005):
> 
> You're right .. _I_ will not use it. It
> will not give me the performance I need.
> My only concern is that if it gets included, other people
> might believe that it is a good model and use it :)

:-)  

> only to find out later what the problems are.
> 
> Andrei
> 
> >Hi 
> >
> >>>Ah, but the application specific part is NOT part of the
> >>>eRead proposal - that merrily provides a placeholder for
> >>>doing that in a clean way!
> >>>     
> >>>
> >>I was thinking that the data selection operation as
> >>described in the proposal is a very specific operation and
> >>that there might be many remote data operations that
> >>cannot be covered by this. For example when I think of
> >>remote data selection I think more in terms of starting a
> >>remote job (using SAGA),  communicating with the job using
> >>specific protocols (perhaps grid services implemented on
> >>top of the SAGA streams) and transferring data from the
> >>remote job locally using SAGA streams. The job itself is
> >>using SAGA to access the file.
> >>
> >>There's a lot of SAGA involved here but there is no eread
> >>and using eread would be a limiting factor.  Eread
> >>basically means (start job, send command, receive
> >>response, end job).  That's perhaps a limiting model for
> >>remote data access.
> >>   
> >>
> >
> >I think I understand the scenario you describe, and you are
> >right: eread is not a good model to implement that, neither
> >is any of the other file I/O operations we have, or have
> >been proposed.  Its a client server scenarios, and streams
> >will do fine.
> >
> >So, if eread does not fit, and read does not fit, don't use
> >it.  So, how is their existence limiting your scenario?  
> >
> >I think I am missing the point (seem to do that a lot
> >lately)...
> >
> >Cheers, Andre.
> >
> >
> > 
> >
> >>My 2 cents, Andrei
> >>   
> >>
> >
> >
> >
> > 
> >



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