Andrew's e-mail bounced... ---------- Forwarded message ---------- Date: Mon, 6 Jun 2005 15:18:05 -0400 From: Andrew Grimshaw <grimshaw@cs.virginia.edu> To: jsdl-wg@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