Newsgroups: comp.parallel.mpi From: Junxian Liu Subject: MPICH : eager or rendezvous protocol? threshold value? Organization: N.A.Software Ltd Date: Thu, 03 Jul 1997 09:58:38 +0100 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <33BB69BE.794BDF32@nasoftwr.demon.co.uk> Hi all, I understand that the MPICH standard send uses eager protocol for short messages and uses rendezvous protocol for long messages. There is a threshold value which defines what messages are short and long. If I am right, what is value of this threshold value? Is it possible for the user to set/configure it and how? Or is it possible to configure this value when make and install MPICH and how? What are the situations for other implmentation of MPI? Any information will be greatly appreciated. Thank you! JL ---- Dr Junxian Liu email: jliu@nasoftwr.demon.co.uk NA Software Ltd Roscoe House 62 Roscoe Street telephone: +44 151 709 4738 Liverpool L1 9DW fax: +44 151 709 5645