Re: [Gems-users] Which matrices should be used to compare CMP coherence protocols?


Date: 23 Mar 2010 19:23:45 -0000
From: "lopamudra chatterjee" <lopamudralopa@xxxxxxxxxxxxxx>
Subject: Re: [Gems-users] Which matrices should be used to compare CMP coherence protocols?
RUBY_CYCLES is indeed lower on the supposedly better performance protocol i.e. MOESI_CMP_directory. Is there any other metrices that I should consider?

Sorry for double message. Initially didn't realize how I should reply.

Thanks,
Lopamudra

On Tue, 23 Mar 2010 22:44:36 +0530 wrote
>What does RUBY_CYCLES say?
>
>
On Tue, Mar 23, 2010 at 12:06 PM, lopamudra chatterjee <lopamudralopa@xxxxxxxxxxxxxx> wrote:
>
Hi,
>
>I am trying to compare the performance of 2 CMP cache coherence protocols by running a benchmark. Could anyone please give me an idea about which matrices from the ruby stats file will be good for performance comparison? Because according to the wiki MOESI_CMP_directory is supposed to give better performance than MSI_MOSI_CMP_directory. But I found that the miss_latency of my run says otherwise.
>
>Thanks,
>Lopamudra 
>

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