Re: [Gems-users] About broadcast

[May Zhao <zhao0043@xxxxxxxxxxxxxxxxxxxxxxx>]

> >      I found the following part in MOSI_SMP_bcast-cache.sm.
> >
> >      action(f_issueGETS, "f", desc="Issue GETS.") {
> >     DEBUG_EXPR(machineID);
> >     enqueue(addressNetwork_out, AddressMsg, latency="ISSUE_LATENCY") {
> >       out_msg.Address := address;
> >       out_msg.Type := CoherenceRequestType:GETS;
> >       out_msg.CacheState := cache_state_to_int(getState(address));
> >       out_msg.Requestor := machineID;
> >       out_msg.Destination.broadcast(MachineType:L1Cache);
> >       out_msg.Destination.add(map_Address_to_Directory(address));
> >       out_msg.MessageSize := MessageSizeType:Control;
> >     }
> >   }
> >
> > Can I only assign a destination address instead of broadcast this message,
> > because I only want one consumer to process this request. Maybe then
> others.
> > How should I do? Can I use out_msg.Destination.add(DestinationMachineID) ?
> 
> If your protocol innovation can handle a unicast message instead of a
> broadcast, then Yes, out_msg.Destination.add(DestinationMachineID) is
> correct.  The directory protocols do _not_ use broadcast.
> 
> --Mike
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Hi Mike,

    I need to modify the protocol to handle unicast message instead of
broadcast,  but which files should I modify? I hope L1Cache 's AddressMsg can
be handled like direcotry. Which part of code should I read?
   Thanks a lot.