Re: [Gems-users] Sharing in Last Level Cache

[Polina Dudnik <pdudnik@xxxxxxxxx>]

You would probably have to start with the coherence protocol. Look at MESI_CMP_directory-L2cache.sm. There you can find blocks in shared state and figure out who the sharers are. However, the exact measure of sharing is not well defined and is not immediately measurable. You can certainly record all kinds of statistics, but I recommend before you do that, first figure out exactly how you intend to measure amount of data sharing.

Polina

On Wed, Mar 31, 2010 at 1:34 PM, Vineeth Mekkat <mekka002@xxxxxxx> wrote:

Hi,

I am interested in measuring the amount of data sharing, at last level cache, between different threads of a parallel program.

Can any one please point me to the right direction as to how to achieve this?

Thanks,
Vineeth

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