Re: [Gems-users] about the simulation result


Date: Thu, 28 Aug 2008 07:36:31 -0500
From: "Dan Gibson" <degibson@xxxxxxxx>
Subject: Re: [Gems-users] about the simulation result
Your target has two processors. One of them (#2) is probably in the OS idle loop -- therefore, it is hitting in the cache on almost every memory access, and it is able to execute the idle loop a lot faster than the other program, which is taking more cache misses. This also accounts for why processor #2 has executed so many more instructions than #1.

On Thu, Aug 28, 2008 at 1:31 AM, llccdd1985 <llccdd1985@xxxxxxx> wrote:
 HI,all
   I am confused about the statistic result,after I used opal0.sim-step 30000,I used ruby0.dump-stat to get the result, one of its items is as below:
 instruction_executed: 899006 [ 30003 869003 ]
 I confused about it,I just simulate 30000 instructions,why it executes so much ?
 
the other is the:total_misses: 2341 [ 2129 212 ],
what's the meaning of 2129 and 212?
 
by the way,I use the same step to simulate one program,why I get different cache misses ?one is several hundreds,the other is several  thousands?

--
   B&R
liuchangding

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