Re: [Gems-users] 64 cores on gems 2.1.1 with simics 3.0

[Rakesh Komuravelli <komurav1@xxxxxxxxxxxx>]

I don't think it has to do with running on 64 cores. It looks more like a bug in the protocol. Its just that running on 64 cores hit a case which uncovered the bug.

Thanks,

Rakesh

On Fri, Nov 5, 2010 at 4:52 PM, <wckwon@xxxxxxxxxxxxx> wrote:

Dear all,

Have you ever tried to simulate 64 cores on Gems 2.1.1 ( ruby loaded ) with Simics 3.0 in MOESI_CMP_directory or MOESI_CMP_token?

For me, it goes well with 16 cores. When I try 64 cores, I get the following kind of cache transition errors continually.

----------------------------------------------------------------------------
successful installation of the ruby timing model.
### Executing "ruby0.init"
Ruby Timing Mode
Creating event queue...
Creating event queue done
Creating system...
 Processors: 64
Creating system done
Ruby initialization complete
Queue registration cpu0
successful installation of the opal queue.
hfa_init_local done:
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:563: m_id is 0
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:563: m_id is 0
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:564: m_version is 16
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:564: m_version is 16
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:565: g_eventQueue_ptr->getTime() is 304
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:565: g_eventQueue_ptr->getTime() is 304
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:566: addr is [0x3f8000c0, line 0x3f8000c0]
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:566: addr is [0x3f8000c0, line 0x3f8000c0]
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:567: event is Fwd_GETS
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:567: event is Fwd_GETS
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:568: state is IS
Warning: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:568: state is IS
Fatal Error: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:569: Invalid transition
Fatal Error: in fn TransitionResult L1Cache_Controller::doTransitionWorker(L1Cache_Event, L1Cache_State, L1Cache_State&, const Address&) in generated/MOESI_CMP_directory/L1Cache_Transitions.C:569: Invalid transition
Abort (SIGABRT) in main thread
The simulation state has been corrupted. Simulation cannot continue.
Please restart Simics.

Thanks,
Woo Cheol

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