Thank you for your time and for your assistance, I'll check it out. Best Regards, *Eng. Karim Soliman* Teaching Assistant Computer Engineering Department Pharos University in Alexandria (P.U.A)
On Tue, Apr 4, 2023 at 8:13 AM Krishna, Tushar <tus...@ece.gatech.edu> wrote: > 0.02 flits/node/cycle is too low an injection rate for deadlocks. Try > higher rates. > > I had created some labs in my NoC class in the past on deadlocks. It might > be useful to take a look, esp Lab 3 on deadlocks. > https://tusharkrishna.ece.gatech.edu/teaching/icn_s20/ > > Some of the garnet repos from past papers from my group might be useful as > well : > https://github.com/noc-deadlock > > Cheers, > Tushar > On Apr 1, 2023, 12:12 AM -0400, Karim Soliman via gem5-users < > gem5-users@gem5.org>, wrote: > > Hey everyone, > My research field is about NoC and I'm working on gem5/garnet 3.0 > standalone. > For research purposes, I'm trying to push Garnet standalone protocol into > deadlock or traffic congestion during the simulation of Mesh_XY topology. > So, that's what i have done so far: > • topologies/Mesh_XY.py ==> I changed the weight of all the internal > links to be 1, to allow the routing to select random output. > • mem/ruby/network/garnet/flitBuffer.cc ==> I reduced the max_size of the > flit buffer to 2 instead of using INFINITE_ constant, by using > setMaxSize(int size); method to apply this. > • cpu/testers/garnet_synthetic_traffic/GarnetSyntheticTraffic.py ==> I > reduced response_limit to be 1000. > • cpu/testers/garnet_synthetic_traffic/GarnetSyntheticTraffic.cc ==> I > used std::cout in the function doRetry() in order to check if there was any > traffic congestion. > • I'm using only two virtual channels by setting the option of > --vcs-per-vnet=2 > I rebuild gem5 using > *sudo scons build/NULL/gem5.debug PROTOCOL=Garnet_standalone -j13*My > simulation command is > *sudo build/NULL/gem5.debug configs/example/garnet_synth_traffic.py > --synthetic=uniform_random --network=garnet --num-cpus=16 --num-dirs=16 > --mesh-rows=4 --topology=Mesh_XY --sim-cycles=50000000 > --routing-algorithm=1 --vcs-per-vnet=2 --injectionrate=0.02* > I re-simulated using higher injection rates with no output from the > doRetry() method, and no deadlock happened, are there any parameters I > should change? > > > > Best Regards,*Eng. Karim Soliman*Teaching AssistantComputer Engineering > DepartmentPharos University in Alexandria (P.U.A) > >
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