RE: [Gems-users] Different CPI's for Ruby and Opal

["Jonathan Brooks" <jonathan@xxxxxxxxxxxxx>]

Yes, they are off exactly by a factor of two!  Ok, but what is the
purpose OPAL_RUBY_MULTIPLIER?  Can I set it to 1 without affecting
something else?

-----Original Message-----
From: gems-users-bounces@xxxxxxxxxxx
[mailto:gems-users-bounces@xxxxxxxxxxx] On Behalf Of Mike Marty
Sent: Thursday, April 28, 2005 6:39 PM
To: Gems Users
Subject: Re: [Gems-users] Different CPI's for Ruby and Opal

Are they off by a factor of 2?  If so, this is due to the
OPAL_RUBY_MULTIPLIER setting in ruby/config/rubyconfig.defaults

--Mike


> I am running a CMP system (2 procs on 1 chip) with Serengeti/Solaris
> target (mostly default configuration).  I use both Opal and Ruby for a
> simulation of running a few binaries for 1 million steps.  When I look
> at the statistics in Ruby, I see Instructions per cycle per processor,
> which I assume I can take the inverse to get Cycles Per Instruction).
> However these numbers do not match the CPI's I get in Opal's report.
> Why are they different?
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