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

[Mike Marty <mikem@xxxxxxxxxxx>]

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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