Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!mit-eddie!think!ames!ucbcad!ucbvax!YALE.ARPA!ram-ashwin
From: ram-ashwin@YALE.ARPA.UUCP
Newsgroups: mod.computers.apollo
Subject: Re: slow disks
Message-ID: <8703242021.AA05671@yale-eli.YALE.ARPA>
Date: Tue, 24-Mar-87 15:21:42 EST
Article-I.D.: yale-eli.8703242021.AA05671
Posted: Tue Mar 24 15:21:42 1987
Date-Received: Thu, 26-Mar-87 05:43:57 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 16
Approved: apollo@yale-comix.arpa


>   Why would a diskless node run faster than disked node when both are using
>   the same disk?

I suspect it's because in the former case you get twice the memory, since the
memory of the disked node effectively acts like a cache for paging off its
disk.  Since you're running a very large job, the paging overhead on a disked
node will kill you if you're also executing your job on the same node.

-- Ashwin Ram.

ARPA:    Ram-Ashwin@yale
UUCP:    {decvax,linus,seismo}!yale!Ram-Ashwin
BITNET:  Ram@yalecs

-------