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

[Rakesh Komuravelli <komurav1@xxxxxxxxxxxx>]

Do you see any difference in the protocol files between Gems 2.1 and Gems 2.1.1? I would first look into that. I never ran MOESI protocol myself but I did see couple of bugs in the MESI protocol. So, don't be surprised if you run into errors. If there is no change in the protocol files between the two Gems versions then you may have to debug and fix the problem.

Thanks,
Rakesh

On Sat, Nov 6, 2010 at 2:05 AM, <wckwon@xxxxxxxxxxxxx> wrote:

 I'm using the protocols as provided by Ruby without any modification.
 In fact, with the same configuration and checkpoint, it worked well on Gems 2.1 + Simics 2.2 . Now on Gems 2.1.1 + Simics 3.0, I cannot run it due to the mentioned errors.
 I'm simulating abisko-serengeti with solaris 10 - sparc v9.

 Woo Cheol

Quoting "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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