I see that L2_REQUEST_LATENCY and L2_RESPONSE_LATENCY are used.
When I change the size of each bank that's placed locally with each core,
I would like to change the latency of accessing each bank.
Which parameter should I change?
Also, I see a directory cache latency in the ruby stats file. It defaults
to 80. Is the directory assumed to be in memory?
I've looked at the file inside the protocol/doc directory, but I am still
not sure on the definition of L2_REQUEST_LATENCY and L2_RESPONSE_LATENCY.
Tom
On Thu, 5 Oct 2006, Mike Marty wrote:
Various protocol controllers use different parameters. See what latency
parameters are used in the MOESI_CMP_directory-L2cache.sm file.
Latency is also determined by the interconnect.
--Mike
How are cache latencies defined when using both ruby and opal?
The values inside the opal config file seems to be ignored, and there are
several latency values when I look inside ruby's stats:
CACHE_RESPONSE_LATENCY: 12
L2_RESPONSE_LATENCY: 6
L1_RESPONSE_LATENCY: 3
L1_REQUEST_LATENCY: 2
L2_REQUEST_LATENCY: 4
L2_RECYCLE_LATENCY: 5
I am using the MOESI_CMP protocol with PT2PT links, and I wondering how I
can modify the latencies when accessing local L1 and L2 caches?
I've looked through the archive, but I am still not clear how to change
the latencies.
Tom
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