[Gems-users] Invalid Transition (IGM, Own_GETX) in MOESI_CMP_directory

["wei wang" <apollo.mobility@xxxxxxxxx>]

i ran into the following error when using MOESI_CMP_directory protocol in GEMS2.0. there are two sequential programs running in the cmp system.

Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2061: m_id is 0
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2061: m_id is 0
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2062: m_version is 1
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2062: m_version is 1
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2063: g_eventQueue_ptr->getTime() is 287628621
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2063: g_eventQueue_ptr->getTime() is 287628621
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2064: addr is [0x7d79c8c0, line 0x7d79c8c0]
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2064: addr is [0x7d79c8c0, line 0x7d79c8c0]
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2065: event is Own_GETX
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2065: event is Own_GETX
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2066: state is IGM
Warning: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2066: state is IGM
Fatal Error: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2067: Invalid transition
Fatal Error: in fn TransitionResult L2Cache_Controller::doTransitionWorker(L2Cache_Event, L2Cache_State, L2Cache_State&, const Address&) in generated/MOESI_CMP_directory/L2Cache_Transitions.C:2067: Invalid transition
Abort (SIGABRT) in main thread
The simulation state has been corrupted. Simulation cannot continue.
Please restart Simics.
Starting command line. (May have skipped commands in script files.)

apparently, there is no (IGM, Own_GETX) pair in L2Cache_Transition.C. i'm not sure what causes such invalid state and event combination. Thanks.

wei