I think suspendContext() and activateContext() might be the calls you are looking for.
Steve On Wed, Jun 12, 2013 at 3:24 PM, Yanqi Zhou <yan...@princeton.edu> wrote: > Great to know! > Thanks again. > One more question: what is the best way to stall a cpu? There are ways > such as inserting cache stalls. Can you suggest a easy way to stall one cpu > without affecting another cpu? > Thanks, > Yanqi > ------------------------------ > *From:* gem5-users-boun...@gem5.org [gem5-users-boun...@gem5.org] on > behalf of Steve Reinhardt [ste...@gmail.com] > *Sent:* Wednesday, June 12, 2013 6:09 PM > > *To:* gem5 users mailing list > *Subject:* Re: [gem5-users] Thread switch > > Normally the CPUs operate independently, so if one stalls, the others > just keep on going. > > CPU switching etc. is covered here: > http://gem5.org/Checkpoints#Switchover.2FFastforwarding > > Steve > > > On Wed, Jun 12, 2013 at 2:18 PM, Yanqi Zhou <yan...@princeton.edu> wrote: > >> Thanks Steve, >> I have a question regarding cpu switch. What triggers the cpu switch in >> gem5 by default? What happens to cpu1 if cpu0 is stalled for a long time >> (due to a cache miss or something)? >> >> Yanqi >> ------------------------------ >> *From:* gem5-users-boun...@gem5.org [gem5-users-boun...@gem5.org] on >> behalf of Steve Reinhardt [ste...@gmail.com] >> *Sent:* Wednesday, June 12, 2013 4:29 PM >> >> *To:* gem5 users mailing list >> *Subject:* Re: [gem5-users] Thread switch >> >> switchOut() is used for fast forwarding or sampling, where you are >> using two different CPU models (one simpler and one more detailed) to >> represent the same logical CPU. >> >> Steve >> >> >> On Wed, Jun 12, 2013 at 12:59 PM, Yanqi Zhou <yan...@princeton.edu>wrote: >> >>> Hi Steve, >>> I also tried : cpu->switchOut(); >>> This results in error: >>> build/ALPHA/sim/eventq.hh:491: void EventQueue::schedule(Event*, Tick): >>> Assertion `(UTick)when >= (UTick)curTick()' failed. >>> Program aborted at cycle -41326055636 >>> >>> Is that because the tick of next event does not match current tick? I am >>> confused here. >>> >>> Thanks, >>> >>> ------------------------------ >>> *From:* gem5-users-boun...@gem5.org [gem5-users-boun...@gem5.org] on >>> behalf of Yanqi Zhou [yan...@princeton.edu] >>> *Sent:* Wednesday, June 12, 2013 3:50 PM >>> >>> *To:* gem5 users mailing list >>> *Subject:* Re: [gem5-users] Thread switch >>> >>> Hi Steve, >>> I am running full system mode. Threads are on different CPUs. For >>> instance I allocate 4 CPUs for 4-thread programs. >>> Thanks, >>> Yanqi >>> ------------------------------ >>> *From:* gem5-users-boun...@gem5.org [gem5-users-boun...@gem5.org] on >>> behalf of Steve Reinhardt [ste...@gmail.com] >>> *Sent:* Wednesday, June 12, 2013 3:43 PM >>> *To:* gem5 users mailing list >>> *Subject:* Re: [gem5-users] Thread switch >>> >>> Hi Yanqi, >>> >>> It's hard to answer your question without more information about your >>> situation. For example, are you running in full system mode or syscall >>> emulation mode? Are you talking about threads on the same CPU, or on >>> different CPUs? >>> >>> Steve >>> >>> >>> >>> On Tue, Jun 11, 2013 at 5:22 PM, Yanqi Zhou <yan...@princeton.edu>wrote: >>> >>>> Hey everyone, >>>> Do anyone know how to force a thread switch when running multithreaded >>>> benchmark, such as PARSEC? I am not a good hacker, and cannot figure out a >>>> way... >>>> I appreciate any suggestion. >>>> Yanqi >>>> >>>> _______________________________________________ >>>> gem5-users mailing list >>>> gem5-users@gem5.org >>>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>>> >>> >>> >>> _______________________________________________ >>> gem5-users mailing list >>> gem5-users@gem5.org >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >>> >> >> >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >> > > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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