[Gems-users] Cache Parameters


Date: Fri, 29 Apr 2005 19:08:10 -0400 (EDT)
From: Vince Weaver <vince@xxxxxxxxxxxxxxx>
Subject: [Gems-users] Cache Parameters
Hello,

I'm trying to set Opal up to simulate a cache heiarchy with the following
parameters:

  Cache-to-cache latency - 400 cycles
  L1 hit latency - 2 cycles
  L2 hit latency - 24 cycles
  Memory access latency - 460 cycles

The latter two seem obvious:
  opal0.setparam L2_LATENCY 24
  opal0.setparam MEMORY_DRAM_LATENCY 460

The L1 latency is more problematic... the options are a bit similar.

Is the
  opal0.setparam L1_FILL_BUS_CYCLES
option what I want?

What should L2_FILL_BUS_CYCLES be in this case?

I've been going through the default config files and also the code itself
but am a bit confused by what's going on...

Thanks,

Vince

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