Hi Andreas, Yes, I came across that script earlier in the day, and was able to decode the tracefile. To note in case others run into problems, I had to also install python-protobuf for the packet_pb2.py package to find protobuffer library (essentially it was needed to run the script). The part about generating packet_pb2.py is noted in the script notes, and the part about needing proto-compiler is noted when building gem5, but nothing about python-protobuf.
As a side note, after I got the communication monitor working, I used the encoding/decoding part to capture ruby prefetch packets. In that case, there is no master/slave wiring where a CommMonitor can be inserted in between (the ruby cache/ruby prefetcher have direct pointer to enqueue messages rather than going through ports, so I just used the the protobuffer message class to write out to a Outprotostream. To get that to compile, I had to change the package name of packet.proto to something other than 'Message' (in my case I changed it to MessageTrace) because Ruby has a Message class which confuses gcc (package Message generates a Message namespace, and so it conflicts with the Ruby Message Class. Malek On Mon, Sep 9, 2013 at 9:50 PM, Andreas Hansson <andreas.hans...@arm.com>wrote: > Hi Malek, > > My bad for not getting any documentation onto the Wiki yet. Have a look > at util/decode_packet_trace which shows you how to decode the information > using python. You could also have a look at the TrafficGen and the > ProtoInputStream to see how the decoding is done. > > protoc is used to generate a Python module (or C++ class) for encoding > decoding, and this is then used at run-time. I am not familiar with the > "--encode" functionality of protoc as it is not something I have ever used. > > Let me know if there are any issues. > > Andreas > > From: Malek Musleh <malek.mus...@gmail.com> > Reply-To: gem5 users mailing list <gem5-users@gem5.org> > Date: Sunday, 8 September 2013 21:01 > To: gem5 users mailing list <gem5-users@gem5.org> > Subject: [gem5-users] Using Protobuf for reading CommMonitor Trace > > Hi, > > I am using the CommMonitor component to look at a trace of memory > address references between the cpu/cache. I seem to have connected it > properly, as in my output directory I see a protobuf binary file generated > for each monitor: e.g. monitor_0.ptrc, monitor_1.ptrc, etc. > > This file generated is a protobuf binary file, but its not clear how I > am supposed to use protoc to read in/print out the contents. It looks like > I have to specify message format from the packet.proto file located in > /src/proto/, but when using the following commandline: > > $ protoc --encode=packet.proto monitor_0.ptrc > > monitor_0.ptrc:2:48983: Invalid control characters encountered in text. > monitor_0.ptrc:2:48991: Invalid control characters encountered in text. > monitor_0.ptrc:2:48993: Invalid control characters encountered in text. > monitor_0.ptrc:2:49002: Invalid control characters encountered in text. > > I am guessing the format of the text should look like the contents > in: tests/quick/se/70.tgen/tgen-simple-dram.cfg > > Can someone indicate the proper way to do this? I don't see any > documentation/info on the wiki about TrafficGen/CommMonitor. > > Thanks, > > Malek > > -- IMPORTANT NOTICE: The contents of this email and any attachments are > confidential and may also be privileged. If you are not the intended > recipient, please notify the sender immediately and do not disclose the > contents to any other person, use it for any purpose, or store or copy the > information in any medium. Thank you. > > ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, > Registered in England & Wales, Company No: 2557590 > ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, > Registered in England & Wales, Company No: 2548782 > > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users >
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