[BYTEIO-WG] Notes from the OGSA ByteIO session at OGF19

[Andre Merzky]

Good points, I agree.  

Cheers, Andre.


Quoting [Michel Drescher] (Feb 15 2007):
> From: Michel Drescher <Michel.Drescher at uk.fujitsu.com>
> To: Andre Merzky <andre at merzky.net>
> Cc: neil p chue hong <N.ChueHong at epcc.ed.ac.uk>, byteio-wg at ggf.org
> Subject: Re: [BYTEIO-WG] Notes from the OGSA ByteIO session at OGF19
> OpenPGP: id=334AC384
> 
> Hi Andre,
> 
> Andre Merzky wrote:
> > Quoting [Michel Drescher] (Feb 10 2007):
> >> Hi Andre,
> > [...]
> >> But even so, this is an *optional* feature, something we cannot rely on. In 
> >> HTTP for example, partial data transfer is a MUST, so it is feasible to 
> >> define a profile for HTTP as each compliant implementation will offer that 
> >> feature.
> >>
> >> What sense does it make to define a rendering for a feature that is 
> >> optional in the underlying transport protocol?
> > 
> > Yes, I agree, that is a definite problem.
> > 
> > However, if I am not mistaken, all gridftp implementations
> > implement partial file transfer.  Also, gridftp has a number
> > of advantages over HTTP IMHO: comes with globus and other
> > middleware, and is nicely (ahem) integrated into the
> > security infrastructure.
> 
> :-)
> ByteIO itself is agnostic to security (TBD or orthogonal), so this must not
> be taken into consideration.
> 
> However, ByteIO is considerably different in its use cases and requirements
> from GridFTP. Hence a different architecture. GridFTP is designed to
> accomplish file *movement* while ByteIO is designed to solve file (well,
> data) *access*. As a consequence, GridFTP requests for small amounts of
> data are simply way too slow when compared to simple HTTP or parallel HTTP.
> 
> I don't advocate against a GridFTP rendering - I just do not want to put
> the "burden" (in terms of time effort) on the ByteIO group itself because
> of the above mentioned reason(s). The group would be glad to see a
> rendering contributed from external sources, I suppose.
> 
> 
> Cheers,
> Michel
-- 
"So much time, so little to do..."  -- Garfield