Hello, The following two command produce very different gem5 binaries
scons build/Garnet_standalone/gem5.opt The above command will use the Garnet_standalone "coherence" protocol. I use quotes around coherence because that protocol is essentially an empty protocol with no coherence. It's meant for testing networks and nothing else. scons build/NULL/gem5.opt This command will use the MI_example protocol. This is a completely different coherence protocol than Garnet_standalone. See https://gem5.googlesource.com/public/gem5/+/refs/heads/stable/build_opts/NULL for how the protocol is defined in the default build options. You can specify the exact protocol you want when you build gem5 by using the scons parameter `--protocol` Cheers, Jason On Tue, Sep 20, 2022 at 8:08 AM 2497597 <2497...@qq.com> wrote: > The correct result is below: > > average_packet_latency = 15.510408 > average_packet_latency = 15.528615 > average_packet_latency = 15.682214 > average_packet_latency = 15.695504 > average_packet_latency = 15.769957 > average_packet_latency = 15.821728 > average_packet_latency = 15.912262 > average_packet_latency = 16.051925 > average_packet_latency = 16.167249 > average_packet_latency = 16.319634 > average_packet_latency = 16.479105 > average_packet_latency = 16.725313 > average_packet_latency = 17.055812 > average_packet_latency = 17.588959 > average_packet_latency = 18.500431 > average_packet_latency = 21.669417 > average_packet_latency = 103.241365 > average_packet_latency = 273.002675 > average_packet_latency = 430.695013 > average_packet_latency = 596.634683 > average_packet_latency = 732.220679 > average_packet_latency = 854.214438 > average_packet_latency = 969.032975 > average_packet_latency = 1087.468352 > average_packet_latency = 1207.588344 > > 1.gem5 version is v21.2.1.0 > > 2.build command is ”scons build/NULL/gem5.opt -j 4" > > 3.run command is below and the "--injection-rate" is increasing with > step=0.02 > > Command to Run: > ./build/NULL/gem5.opt > configs/example/garnet_synth_traffic.py \ > --network=garnet2.0 \ > --num-cpus=64 \ > --num-dirs=64 \ > --topology=Mesh_XY \ > --mesh-rows=8 \ > --sim-cycles=10000 \ > --inj-vnet=0 \ > --injectionrate=0.02 \ > --synthetic=uniform_random > > I find some interesting phenomenons. > I think I figured out where the problem might be. > It might be the permission error and the build order. > I built "X86","ARM","NULL" on my old computer before,so I try to restore > it all. > Then I find the miss folder "__pycache__" come out,I think I'm going to > get close to the root of the problem. > But I failed. > I rebuild a same version gem5 on my new computer with the command"”scons > build/Garnet_standalone/gem5.opt -j 4" under the root state. > Then I run the same script,I get the correct output.(I can see the > average_packet_latency is increasing with the --injectionrate) > Although I get the desired output, I can't figure out why I get the wrong > output. > > ------------------ 原始邮件 ------------------ > *发件人:* "The gem5 Users mailing list" <gabriel.bus...@arteris.com>; > *发送时间:* 2022年9月20日(星期二) 晚上7:40 > *收件人:* "gem5-users"<gem5-users@gem5.org>; > *主题:* [gem5-users] Re: 回复：Re: Different simulation results on different > computers with the same configuration > > Not sure to understand what you mean by “correct result". > > Can you please provide us with: > > 1. > > gem5 version (commit SHA) > 2. > > build command > 3. > > run command > > > Can you please also double-check that you are using supported versions of > python and gcc/clang. Also check that config.ini is the same in all cases. > > Gabriel > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org >
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