I haven't looked at the old thread to see what's covered there, but I believe you're confusing separate instances of a LiveProcess object with copies of a single instance. If you assign multiple cores to a single instance of a workload then the expectation is that that's a multithreaded workload that will eventually fork threads onto the other cores. If it's not a multithreaded workload then the other cores will be idle. If you want multiple cores to run different instances of the same workload you need to assign different instances of the class that describes the workload.
So something like this: class Astar(LiveProcess): astar.executable = binary_dir + '/astar' astar.cmd = [astar.executable]+['rivers.cfg'] astar.cwd = data_dir + '/astar/ref/input/' astar.output = data_dir + '/astar/ref/output/rivers.out' system.cpu[0].workload = Astar() system.cpu[1].workload = Astar() Or if you don't want to change your script as much, you can also use cloning to create new instances from existing instances (hmm, can't find cloning documented on the wiki anywhere, but it's mentioned on slide 99 of the ASPLOS tutorial): system.cpu[0].workload = Mybench.astar() system.cpu[1].workload = Mybench.astar() Steve On Fri, Nov 13, 2009 at 9:59 AM, Sujay Phadke <[email protected]> wrote: > Hello, > This is similar to the discussion thread from May 2008. My system config > had 8 cores. Running M5 in SE mode. If I assign the same benchmark to > multiple cores, only 1 cpu fetches and executes instructions. all others > lock up. Only if I assign different benchmarks do all cpus fetch instruction > correctly. > > eg: (spec2006) > a. 8 gcc - only 1 cpu executes > > b. 7 gcc, 1 astar - 1 cpu executes astar, and only 1 cpu executes gcc > > > I assign the benchmarks in this way in the modified se.py file: > > ... > newp0 = Mybench.astar > newp1 = Mybench.astar_2 > .... > > system.cpu[0].workload = newp0 > system.cpu[1].workload = newp1 > > I changed the Mybench.py file to include different object names for the > workload objects. > > #473.astar > astar=LiveProcess() > astar.executable = binary_dir + '/astar' > astar.cmd = [astar.executable]+['rivers.cfg'] > astar.cwd = data_dir + '/astar/ref/input/' > astar.output = data_dir + '/astar/ref/output/rivers.out' > > #473.astar_2 > astar_2=LiveProcess() > astar_2.executable = binary_dir + '/astar' > astar_2.cmd = [astar.executable]+['rivers.cfg'] > astar_2.cwd = data_dir + '/astar/ref/input/' > astar_2.output = data_dir + '/astar/ref/output/rivers.out' > > .... > ... > > Now if I assign astar and astar_2 , and so on to the 8 cores, they seem to > execute fine. (o3). all cpus fetch and execute correctly. > > can someone throw some light on this? > > - Sujay > > _______________________________________________ > 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
