[jsdl-wg] Question on file stage-in (fwd)

[Ali Anjomshoaa]

Andrew's e-mail bounced...


---------- Forwarded message ----------
Date: Mon, 6 Jun 2005 15:18:05 -0400
From: Andrew Grimshaw <grimshaw at cs.virginia.edu>
To: jsdl-wg at gridforum.org
Subject: Question on file stage-in

All,

 

I am new to this working group and have a question on the specification.

 

In the data staging elements there is a creation flag that indicates whether
to over-write or append.

 

Often, one only wants to overwrite if the target and the source are
different, for example if I am using a large data set that changes
infrequently or several jobs on the same resource will use the "same" input
file. 

 

Is there a way to do conditional stage in?

 

I know the document says

"More complex file transfers, for example, conditional transfers based on
job termination status are out of scope. "

But we're talking about a major performance optimization.

 

Andrew