Hi All, I am also curious about this. The pre-fetcher for L2, does it fetch from DRAM and place the data in L2 (assuming L2 is the last level cache)? Or is it fetching from L2 and placing the data in L1?
Thanks, Zheng Wu On 2013-12-02, at 10:19 AM, jerry yin <[email protected]> wrote: > Hi Fernando, > > I checked for the python script you mentioned, but isn't that a cache > pre-fetcher? What I'm looking for is DRAM pre-fetcher though. Seems that gem5 > don't have such a feature. Anyway, thanks for your information. > > Yours Sincerely, > Jerry Yin > > > > On Mon, Dec 2, 2013 at 11:46 AM, Fernando Endo <[email protected]> > wrote: > Hello, > > If you're looking for stride prefetchers, they exist: For example in the > O3_ARM_v7a.py configuration file, in the L2 cache: > prefetcher = StridePrefetcher(degree=8, latency='1.0ns') > > By the way, could someone help me to configure the stride prefetcher for the > Cortex-A9 (in its L1-D cache)? The Cortex-A9 manual says: > > 1) can monitor and prefetch up to eight independent data streams > 2) maximum stride of 8 cache lines > > By default, the stride prefetcher has 100 entries in its buffer, so how the > above info is related to the prefetcher buffer size and degree? > > Regards, > > -- > Fernando A. Endo, PhD student and researcher > > Université de Grenoble, UJF > France > > > > 2013/11/30 jerry yin <[email protected]> > Hi, > > I'm relatively new here. Just wondering if there is DRAM prefetcher in gem5? > I do find a folder /src/mem/cache/prefetch, but the C++ class seems to be all > cache prefetchers. > > If there is no DRAM prefetcher, do you have any advice in implementing it? > What file should I aim to modify? > > Thanks! > Jerry > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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