home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.parallel
- Path: sparky!uunet!destroyer!gatech!hubcap!fpst
- From: W.Purvis@daresbury.ac.uk (Bill Purvis, ext 3357)
- Subject: Re: Can a Hypercube programmer lend me a hand?
- Message-ID: <1993Jan26.160523.9867@hubcap.clemson.edu>
- Apparently-To: comp-parallel@uk.ac.uknet
- Sender: fpst@hubcap.clemson.edu (Steve Stevenson)
- Reply-To: wh@gserv1.dl.ac.uk
- Organization: Daresbury Laboratory, UK
- References: <1993Jan25.163844.13169@hubcap.clemson.edu>
- Date: Tue, 26 Jan 1993 12:49:38 GMT
- Approved: parallel@hubcap.clemson.edu
- Lines: 28
-
- > Can someone help me understand just who gets the message in the
- > following examples:
- >
- > nodedim is 2, destination argument is -2, I am processor 2
- >
- > nodedim is 3, destination argument is -2, I am processor 2
- >
- > nodedim is 5, destination argument is -3, I am processor 2
-
- On reading this I realised that I had never figured it out myself. I did a few
- quick tests and here are the results:
-
- nodedim=2, dest=-2, message goes to node 3 only
- nodedim=3, dest=-2, message goes to 0,1,3 4-7 don't see anything
- nodedim=5, dest=-2, message goes to 0,1,3..15, 16-31 don't see anything
- nodedim=5, dest=-3, message goes to 0,1,3..7 8..31 don't see anything
- nodedim=5, dest=-4, message goes to 0,1,3 4..31 don't see anything.
-
- I can't think of a better way of wording the description given in the manual
- but I agree it needs improving. However, a few examples do give you the general
- idea!
- Bill.
- (Bill Purvis, Daresbury Lab, Warrington Cheshire, England)
-
-
-
-
-
-