Re: [Gems-users] NUCA Profiler

["Mike Marty" <mikem@xxxxxxxxxxx>]

Anything NUCA needs to be configured using a FILE_SPECIFIED topology in
ruby/network/simple/Network_Files


> -----Original Message-----
> From: gems-users-bounces@xxxxxxxxxxx [mailto:gems-users-
> bounces@xxxxxxxxxxx] On Behalf Of Daniele Bordes
> Sent: Thursday, August 31, 2006 3:48 AM
> To: Gems Users
> Subject: Re: [Gems-users] NUCA Profiler
> 
> I think that there is a difference in latency between accessing a
> local or a center bank.
> Well, I'm really NOT sure, but I think that latencies are determined
> by parameters' values set in ruby configuration file. Part of these
> parameters' names contains the word "latency"  (for instance,
> NETWORK_LINK_LATENCY). Moreover, usually the number of links between
> L1_cache and a local bank is lower than the number of links between
> L1_cache and center banks. Finally, it seems to me that the searching
> process involves at first only local banks, and only after the other
> banks.
> Surely ruby authors would be more accurate.
> 
> If you want to go in details, you could try to look inside the files
> "SimpleNetwork.C" and "Topology.C". The code contained in these files
> "builds" the network of switches, links and banks and the
> "construction" takes into account the latencies specified. Sorry, but
> about the profiler, at this moment I don't know how it takes into
> account the latencies.
> 
> Hope my answer is useful for you.
> 
> Regards.
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