Newsgroups: comp.parallel.pvm
From: hsong@asylum.cs.utah.edu (Hwal Song)
Subject: strange cpu time : pvm 3.2.5
Organization: University of Utah Computer Science
Date: 18 Oct 1994 06:18:10 GMT
Message-ID: <37vpb2$dp0@magus.cs.utah.edu>

Hi!
I encountered a strange phenomena when I run a application.
I ran 6 work stations about 10 times over same job.
Each took
     machine 0 : 3 unit time
     machine 1 : 3
     machine 2 : 3  
     machine 3 : 3
     machine 4 : 3
     machine 5 : 9

So I deleted machine 4 and ran again. This time
all took 3 unists but machine 1 took 9 units.

So I deleted machin 1 and ran again but all took 3 units
but machine 3 took 8 units.

This happens in the consistent manner. i.e. one machine
is extremely slow which was not the case in the previous
one larger group.

I ran at least 10 times with each group during late night.

Any idea why this behavior happens?


