Other than the FSConfig.py change, is there any reason this shouldn't just be in the tree?
On Wed, Apr 9, 2008 at 1:53 PM, Ali Saidi <[EMAIL PROTECTED]> wrote: > Actually in our tutorial as ASPLOS 2008 we showed an example of adding a > variance to delay memory. Here is a diff to m5 that should do the trick. > Just set latency_var = 'XXns' on the Physical Memory object and that should > do the trick. It will still be deterministic for a given latency since the > random number generator is seeded to the same thing (which is good so you > can redo an experiment when you find the problem). Changing the latency_var > parameter by a little bit is probably the best way to see a wide variety of > results. > > Ali > > > > On Apr 9, 2008, at 4:46 PM, Steve Reinhardt wrote: > > > Have you read the paper by Alameldeen and Wood on this? (There may have > been other coauthors.) They introduced variability by making the memory > latency pseudo-random. > > > > Steve > > > > 2008/4/9 Geoffrey Blake <[EMAIL PROTECTED]>: > > I'm potentially looking for some ways to induce some non-determinism into > multiprocessor setups for M5, since currently M5 is completely > deterministic. Does anyone have any suggestions where I should start looking > to be able to do this? I'd like to measure the variance for threaded > programs over many runs. > > > > > > I'm thinking the best place to induce non-determinism is in bus.cc, or to > even perhaps randomly shuffle the event queue for events that need to launch > on the same tick. > > > > Thanks, > > > > Geoff > > > > > > No virus found in this outgoing message. > > Checked by AVG. > > Version: 7.5.519 / Virus Database: 269.22.10/1367 - Release Date: 4/9/2008 > 7:10 AM > > > > _______________________________________________ > > m5-users mailing list > > [email protected] > > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > > > > _______________________________________________ > > m5-users mailing list > > [email protected] > > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > > > > > _______________________________________________ > m5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users > _______________________________________________ m5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
