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- Newsgroups: comp.parallel
- Path: sparky!uunet!think.com!rpi!gatech!hubcap!fpst
- From: christos@bohemia.cs.colorado.edu (Christos Triantafillou)
- Subject: Re: PVM vs. Express
- Message-ID: <1992Nov13.234124.6473@colorado.edu>
- Sender: Christos Triantafillou
- Nntp-Posting-Host: bohemia.cs.colorado.edu
- Organization: University of Colorado, Boulder
- References: <1992Nov13.125101.20219@hubcap.clemson.edu>
- Date: Fri, 13 Nov 1992 23:41:24 GMT
- Approved: parallel@hubcap.clemson.edu
- Lines: 27
-
- In article <1992Nov13.125101.20219@hubcap.clemson.edu> roy@willow.ccsf writes:
- >
- >Portability: PVM seems to be just workstation networks, Express is also Intel, Ncube
- >Cray, SGI, in fact all the MIMD machines I can think of.
- >
-
- According to PVM's users guide (ver 2.3), PVM has been ported to
- a variety of machines including IPSC, I860, CRAY, CM2, RS6000, etc.
-
- However, I have recently heard that PVM treats each of these
- machines like a single parallel node, that is, you cannot send messages
- between two ipsc nodes, for example, but only between two ipsc systems.
- Could anyone with PVM experience on these systems comment on that?
-
- >
- >PVM seems to be just send and receive and not much else. You can't send a "mixed-bag"
- >message with different types - you have to send the floats, ints, chars etc in
- >different messages. Also there seems to be a kind of hub-and-spoke system where all
- >
-
- That's not true. You can always send multi-type messages by
- successively calling get[type] to get the message buffer filled,
- and then actually send your message using snd().
-
- --- Christos
-
-
-