But isn't the definition of set associative cache to compare the tags of all ways in parallel ? And is the function that I mentioned in my last post actually the real function where tag comparisons take place or is there any other function in some other file that does the comparisons ?
On Mon, Mar 10, 2014 at 10:02 PM, Mohamad Jokar <[email protected]> wrote: > Hi > > The hit latency of the caches formula normally consist of two part, tag > search time and data time. > "hit latency = tag search time + data time" > > If you want to see the effect of parallel and serial comparison you should > change hit latency of the cache (the tag part) not the code above. Take a > look at "/configs/Caches.py" > > I hope that helps. > > > > On Monday, March 10, 2014 7:26 PM, tanmayGadre <[email protected]> wrote: > I was looking at the file cacheset.hh (path is mem/cache/tags/cacheset.hh) . > i found the code for tag comparison is written for a serial comparison . > Ideally the tags should be compared in parallel . But according to the code > , they seem to be compared in series one after another . > following is the code in which i have the query : > template <class Blktype> > > Blktype* > CacheSet<Blktype>::findBlk(Addr tag, bool is_secure, int& way_id) const > { > way_id = assoc; > for (int i = 0; i < assoc; ++i) { > if (blks[i]->tag == tag && blks[i]->isValid() && > blks[i]->isSecure() == is_secure) { > way_id = i; > return blks[i]; > } > } > return NULL; > } > > Shouldn't we use something like fork and join for parallel comparisons ? > Kindly tell me is my analysis of the code correct or incorrect ? > I need this piece of code to be correct for my project . > > > _______________________________________________ > 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
