Hi Karim, Can you give us more details on your configuration? What is the type of build, config, and command line you are running which leads to this? Any changes that you may have done to the codebase will also be helpful.
Srikant On Mon, Mar 27, 2023 at 8:26 PM Karim Soliman via gem5-users < gem5-users@gem5.org> wrote: > Hey everyone, > For learning purposes, I'm trying to understand what's the virtual > networks inside gem5/garnet3.0 - I'm working with Mesh_XY topology > configurations. > I found that inside garnet3.0 there are 5 virtual networks and in the file > *mem/ruby/network/Network.cc* I managed to print the count of the virtual > networks, and their names > The following is terminal output, the line print the size of the vector > *m_vnet_type_names > *and the following line are the names of these virtual networks. > [image: image.png] > however, when i tried to reduce the number of the virtual networks to be > less than 5 inside the configuration file *gem5/configs/ruby/Ruby.py* - > by setting the following value to any number less than 5 > ruby.network.number_of_virtual_networks > It generate fatal error when simulating from > *build/NULL/mem/ruby/network/Network.cc:212: fatal: fatal condition > network_num >= m_virtual_networks occurred: Network id is out of range* > I'm aware that garnet3.0 has 3 different types of packets, request, > forward, and response. So if each one of these types uses one of the > virtual networks, what's the use of the other two? > I have output during the simulation the route virtual network used in > routing by printing the following variable route.vnet in > file mem/ruby/network/garnet/RoutingUnit.cc inside function > int RoutingUnit::outportComputeXY(RouteInfo route, int inport, > PortDirection inport_dirn) > and only i can find virtual networks with IDs 2,3 and 4 - i can't find 0 > or 1 in route.vnet. > > *My question is, what is a virtual network? and each virtual network used > to route only one packet type?* > > *And another question, what's the buffer default size inside each virtual > channel? How can I modify the size of the buffer? * > > > 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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