Hi Daecheol, Unfortunately, the flush command is a bit more complicated to implement than just a simple replacement. I responded to another message about this on the mailing list a few minutes ago that you can see for more information.
Cheers, Jason On Mon, Sep 28, 2020 at 8:59 PM Daecheol You via gem5-users < gem5-users@gem5.org> wrote: > Hi all, > > I am running PARSEC benchmark with full system simulation. > The CPU model is O3CPU (parameters tuned) with ARM ISA and > MESI_Three_Level protocol were used. (build/ARM_MESI_Three_Level/gem5.opt) > While the benchmark is running, panic occurs since the L0 cache controller > gets unsupported type of request with the following message. > > panic: Runtime Error at MESI_Three_Level-L0cache.sm:287: Invalid > RubyRequestType. > > I checked the type of request which triggers panic by inserting debug > message at mandatory_request_type_to_event() in > MESI_Three_Level-L0cache.sm. It was FLUSH request, and it is not handled > properly by the protocol. It seems that other protocols also do not handle > FLUSH request. I wonder why the protocol does not process FLUSH request > from a mandatory queue, and how I workaround this issue. > > I modified the MESI_Three_Level-L0cache.sm so that it triggers > L0_Replacement event and pop the mandatory queue explicitly for the FLUSH > request. However, panic occurs at wakeup() function of sequencer > (src/mem/ruby/system/Sequencer.cc) since the FLUSH request is not erased > from the m_RequestTable. (Unlike read/writeCallback, evictionCallback does > not erase the entry in request table.) > It would be very helpful if you guys provide me a guide for this issue. > > Thanks, > > Daecheol. > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org > %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
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