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- Newsgroups: comp.parallel
- Path: sparky!uunet!think.com!rpi!gatech!hubcap!fpst
- From: rminnich@super.super.org (Ronald G Minnich)
- Subject: Re: PVM vs. Express
- Message-ID: <1992Nov16.131744.5046@hubcap.clemson.edu>
- Apparently-To: uunet!comp-parallel
- Sender: news@super.super.org (USENET News System)
- Nntp-Posting-Host: super
- Organization: Supercomputing Research Center (Bowie, MD)
- References: <1992Nov13.125101.20219@hubcap.clemson.edu> <1992Nov13.170728.15091@hubcap.clemson.edu>
- Date: Sat, 14 Nov 1992 13:39:53 GMT
- Approved: parallel@hubcap.clemson.edu
- Lines: 38
-
- In article <1992Nov13.170728.15091@hubcap.clemson.edu> apctrc!zkdc05@uunet.UU.NET (Kelly D. Crawford) writes:
- >PVM has been integrated with a product from Florida State (SCRI) called
- >DQS (also free -- ftp ftp.scri.fsu.edu or ftp 192.70.169.254 in the file
- >pub/DQS/DQS.REV_2.0.tar.Z). DQS stands for Distributed Queuing System
- >and is a way of combining some load balancing, etc with PVM. Really
- >powerful stuff.
-
- OK, good to see DQS made it out. Here is my question:
- On Condor (U. Wisc.), RES (SRC), and like systems you get the 'go find an idle
- machine and use it' function, but you don't get the ability to specify
- which of your tasks need to run concurrently or on which machines
- they must run. This is a big hole in these systems.
-
- On PVM the last time I used it you had to decide what process went where,
- but could not do the 'when it is idle' trick. This is also true of
- P4. Sometimes, you don't care what runs where, just that it runs.
-
- What i want is the 'when it is idle, use it' feature,
- but also want to optionally be able to
- specify processors and jobs for those processors, and which of those jobs
- must be running at the same time.
-
- Do you get this with DQS+PVM? can i demand a specific set of machines that
- when idle get allocated for my use, and that when they become busy
- again will be stolen back from me? Can i specify which task goes to which
- machine? Finally, can i specify which tasks must run concurrently?
- I don't always need these things, but need them often enough that e.g.
- Condor or RES won't do the job for me.
-
- Yes I know this is a big piece of work. I was going to take this on
- next year but if someone else has done it ...
-
- ron
- --
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