Sorry. I forgot to mention that I am
trying to run 16 processor simulations.
-----Original Message-----
From: gems-users-bounces@xxxxxxxxxxx
[mailto:gems-users-bounces@xxxxxxxxxxx] On
Behalf Of Philip Garcia
Sent: Sunday, July 13, 2008 3:05
PM
To: Gems Users
Subject: Re: [Gems-users] why I
can not get the result
While Gems can be slow, it isn't quite that slow.
Of course, a lot depends on how many processors you have configured.
Also, make sure you aren't compiling gems with debug flags turned on
(that will slow down execution quite a bit). In general, I've found that
it takes ~1 day on a 2.4GHz core 2 system to simulate a single core processor
for 2 billion cycles. In general, runtimes will scale with the number of
processors you're simulating, so a 2 processor simulation will take twice as long.
Phil
On Jul 13, 2008, at 12:25 PM, Berkin Ozisikyilmaz
wrote:
I am not
sure about the exact numbers but I think about 50 million instructions takes
12-16 hours to simulate so 10 billion instructions will not finish. Start small
try 500K and then increase.
'opal0.sim-step X' runs
the simulation for X instructions. You need not use 'c' at all.
I use your method to
simulate it,But I type the command as below:
simics>opal0.sim-step
9999999999
It will spend a long
time to finish it,does it tell the simics doesn't stop until
executing 9999999999 instructions?
Is your meaning that
after I use opal0.sim-step,wait it finish,then I use c to
start simulate?
then I can get the
result?
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