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Well, I requested that feature so I know that it does (it redirects reading of a fully cached file to shared filesystem as a cheap way to take the advantage of RDMA on HPCs)

We just have lots of features to remember :--) Thanks for the hint

regards,
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Wei Yang  |  [log in to unmask]<mailto:[log in to unmask]>  |  650-926-3338(O)

On 1/13/21, 11:26 AM, "Matevž Tadel" <[log in to unmask]<mailto:[log in to unmask]>> wrote:


Well, Andy implemented this so I don't know the details how it's supposed to work. Maybe there is a way to make it work for remote clients as well ... maybe it would need to be a two-stage process, like:

  1.  server says: try file:/lustre/somewhere/xxx.root
  2.  client says, nope, can't do, give me data!
  3.  xcache serves the file as it normally would

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