Re: [Gems-users] Ruby Crashing in Sequencer

[Mrinmoy Ghosh <mrinmoy@xxxxxxxxxxxxxx>]

Thanks Mike. I am doing my experiments on a single processor machine 
with a L1 and L2 Cache and Memory. I dont think there are any coherence 
issues here. As Dan suggested, I may have to work with Sarek and not 
Bagle to get things to work.
Mrinmoy


Mike Marty wrote:

> A deadlock in the sequencer usually means that something went wrong with
> the coherence protocol causing the request to exceed the "watchdog timer"
> we have in the Ruby sequencer.
>
> --Mike
>
>
>  
>
> > Hi,
> >         I am trying to run the mcf benchmark of SPEC in simics with
> > ruby. The OS used is suse-linux on Sparc(Bagle). Simics crashes giving
> > the  message attached at the bottom.
> > This possibly happens because some memory request resided in Ruby's
> > Sequencer queue for more than a 100000 cycles(I set the deadlock
> > threshold at 100000). Can anybody give me a clue as to why this may be
> > happening?
> >
> > Mrinmoy
> >
> > -------------------------------------------------------------------------------------------------------------
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:102: Possible Deadlock detected
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:102: Possible Deadlock detected
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:103: request is [CacheMsg: Address=[0x4b2440, line
> > 0x4b2440] Type=LD ProgramCounter=[0x463adc, line 0x463ac0]
> > AccessMode=SupervisorMode Size=8 Prefetch=No Version=0 Aborted=0
> > Time=106051657 ]
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:103: request is [CacheMsg: Address=[0x4b2440, line
> > 0x4b2440] Type=LD ProgramCounter=[0x463adc, line 0x463ac0]
> > AccessMode=SupervisorMode Size=8 Prefetch=No Version=0 Aborted=0
> > Time=106051657 ]
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:104: m_chip_ptr->getID() is 0
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:104: m_chip_ptr->getID() is 0
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:105: keys.size() is 1
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:105: keys.size() is 1
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:106: current_time is 106214431
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:106: current_time is 106214431
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:107: request.getTime() is 106051657
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:107: request.getTime() is 106051657
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:108: current_time - request.getTime() is 162774
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:108: current_time - request.getTime() is 162774
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:109: *m_readRequestTable_ptr is [ [0x4b2440, line
> > 0x4b2440]=[CacheMsg: Address=[0x4b2440, line 0x4b2440] Type=LD
> > ProgramCounter=[0x463adc, line 0x463ac0] AccessMode=SupervisorMode
> > Size=8 Prefetch=No Version=0 Aborted=0 Time=106051657 ] ]
> > Warning: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:109: *m_readRequestTable_ptr is [ [0x4b2440, line
> > 0x4b2440]=[CacheMsg: Address=[0x4b2440, line 0x4b2440] Type=LD
> > ProgramCounter=[0x463adc, line 0x463ac0] AccessMode=SupervisorMode
> > Size=8 Prefetch=No Version=0 Aborted=0 Time=106051657 ] ]
> > Fatal Error: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:111: Aborting
> > Fatal Error: in fn virtual void Sequencer::wakeup() in
> > system/Sequencer.C:111: Aborting
> > ------------------------------------------------------------------------------------------------------------------
> >
> >
> >
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