I recommend you set the memory latency to zero.
My other comments follow:
Thomas Yeh wrote:
I am currently simulating with the MOESI_CMP_directory protocol, and would
like to run the simulations with a perfect L2.
What is the best way to do this?
1) Running opal without ruby and specifing L2_IDEAL?
Running without ruby doesn't simulate any cache coherence. Unless this
is what you're intending, running without Ruby is probably a bad option.
2) Run both opal and ruby, but specify L2 is always a hit locally?
Yes, you could do that.
Is the L1 always 1 cycle when running opal w/o ruby? I don't see
a parameter for setting the L1 latency.
Opal w/o Ruby uses its own cache model, based on a uniprocessor
hierarchy. See Opal's cache.[Ch].
If I run without ruby, how do I compare the performance? Since there won't
be a ruby_cycle metric.
Opal will still produce several metrics. Pick your favourite and use
that instead.
thx,
Tom
Regards,
Dan
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