Yes, please can you help me to modify the files into src/mem/ruby/ as I understand till now, inside garnet 3.0 we have 3 types of messages/classes
- requests - forward - response. Each one of these classes has its own virtual network separated from the other classes. - requests, and forward are control packets and with size 8 bytes - and they use virtual network 0 and 1 (1-flit) size. - responses are considered as data packets with size = 72 bytes and using virtual network 2 (5-flit) size. So, according to this structure, deadlock may never happen, how can I force all the three classes to use only one virtual channel ? Best Regards, *Eng. Karim Soliman* Teaching Assistant Computer Engineering Department Pharos University in Alexandria (P.U.A) On Sat, Mar 25, 2023 at 4:00 PM Srikant Bharadwaj <srikan...@gmail.com> wrote: > Hi Karim, > > The virtual network is the protocol level sub network. The virtual > channels indicate the number of parallel buffer streams in each virtual > network. To achieve a protocol deadlock you will have to set a single > virtual network and then force the different types of messages (request, > response, etc.) to go through the single virtual network. > > For changing the number of virtual networks, you can modify the quantity > in configs/Network.py > Forcing the different messages to take that virtual network requires > changes in the protocol file in src/mem/ruby/ files. > > Let me know if you have any questions about changing them . > > Srikant > > On Sat, Mar 25, 2023 at 12:15 AM Karim Soliman via gem5-users < > gem5-users@gem5.org> wrote: > >> Hey everyone, >> For learning purposes, I'm trying to understand the deadlock and virtual >> channels, so in gem5/garnet 3.0 in file >> mem/ruby/network/garnet/InputUnit.cc >> I have tried to output the following: >> std::cout << " - VCs " << m_router->get_num_vcs() << " Vnetworks: " << >> m_router->get_num_vnets() << " VCs per Vnet: " << m_router-> >> get_vc_per_vnet() << " - route.vnet: " << route.vnet << std::endl; >> Using Mesh_XY topology to inspect the variables. >> I'm also used the options –-vcs-per-vnet and –-inj-vnet >> >> The following is my simulation command: >> sudo build/NULL/gem5.debug configs/example/garnet_synth_traffic.py >> --network=garnet --topology=Mesh_XY --mesh-rows=4 --num-cpus=16 >> --num-dirs=16 --sim-cycles=5000000 --injectionrate=0.2 >> --synthetic=uniform_random --vcs-per-vnet=1 --inj-vnet=0 >> >> the variables output are >> m_router->get_num_vcs() = 5 >> m_router->get_num_vnets() = 5 >> m_router->get_vc_per_vnet = 1 >> >> My questions are, Why is the output 5 virtual channels? and what's the >> virtual network? >> Also, I'm trying to force the simulation to get into deadlock by >> increasing the injectinorate and always using only 1 virtual channel per >> link. >> but the simulation never went to a deadlock, why? I'm using only one >> virtual channel. >> >> >> Best Regards, >> *Eng. Karim Soliman* >> Teaching Assistant >> Computer Engineering Department >> Pharos University in Alexandria (P.U.A) >> _______________________________________________ >> gem5-users mailing list -- gem5-users@gem5.org >> To unsubscribe send an email to gem5-users-le...@gem5.org >> >
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