Hi Congwu Zhang, I was able to fix that error with this information, but now there are some other errors related to missing options that the KiteLarge_EWMC.py script requires. Some of these may be: concentration_factor num_chiplets num_mem_ctrls chiplet_width chiplet_clock top_vc tsv_width noi_width tsv_clock bottom_vc mem_clock
This may not be an exhaustive list of all the options needed, but I figured this out from the KiteLarge_EWMC.py file. I just looked for options exclusively found in that file and nowhere else in Gem5. As far as I know, if I want these options enabled, I may need to add them to the Options.py file manually. Is that correct? Also, if possible, do you know how I can add those options otherwise? Thank you for your time and help. I really appreciate it. Sincerely, Preet. On Fri, Feb 23, 2024 at 2:46 AM zhangcongwu--- via gem5-users < gem5-users@gem5.org> wrote: > Hi Preet, > > There's a missing parameter in configs/ruby/Ruby.py:259 (maybe different, > search makeTopology), you should add a `full_system` param to this method. > The order of these parameters should be same as `makeTopology` in > `KiteLarge_EWMC.py`. > > Best, > Congwu Zhang > > > *From:* Preet Derasari via gem5-users <gem5-users@gem5.org> > *Date:* 2024-02-23 04:05 > *To:* Srikant Bharadwaj <srikan...@gmail.com> > *CC:* The gem5 Users mailing list <gem5-users@gem5.org>; Krishna, Tushar > <tus...@ece.gatech.edu>; Preet Derasari <preetderas...@gmail.com> > *Subject:* [gem5-users] Re: Chiplet Simulation with Gem5 > Hi Srikant, > > Thank you so much for answering my questions and providing the reference > file. > > Since I am new to NoC simulation and using Garnet 3.0 (HeteroGarnet), I > feel a little lost regarding running a SE or FS mode simulation. > > I checked the documentation on Gem5 posted ( > https://www.gem5.org/documentation/general_docs/ruby/heterogarnet/) and > read the Kite paper (https://dl.acm.org/doi/abs/10.5555/3437539.3437683). > > Nevertheless I could not figure out how to run a simulation (specifically > in SE mode) where I can use the topology you provided. > > I am using the deprecated se.py file in the following manner: > build/X86/gem5.opt configs/deprecated/example/se.py --num-cpus=4 > --num-dirs=4 --cpu-type=DerivO3CPU --cpu-clock=2.5GHz --caches > --l1d_size=64kB --l1d_assoc=8 --l1i_size=32kB --l1i_assoc=8 > --mem-type=SimpleMemory --mem-size=8GB --ruby --network=garnet > --topology=KiteLarge_EWMC --mesh-rows=2 --cmd=</path/to/binary> > --options="<binary args>" > > When I run this command, I get the following message: > ======================================================================= > gem5 Simulator System. https://www.gem5.org > gem5 is copyrighted software; use the --copyright option for details. > > gem5 version 23.1.0.0 > gem5 compiled Feb 19 2024 14:33:34 > gem5 started Feb 22 2024 14:48:41 > command line: build/X86/gem5.opt configs/deprecated/example/se.py > --num-cpus=4 --num-dirs=4 --cpu-type=DerivO3CPU --cpu-clock=2.5GHz --caches > --l1d_size=64kB --l1d_assoc=8 --l1i_size=32kB --l1i_assoc=8 > --mem-type=SimpleMemory --mem-size=8GB --ruby --network=garnet > --topology=KiteLarge_EWMC --mesh-rows=2 --cmd=</path/to/binary> > '--options=<binary args>' > > warn: The se.py script is deprecated. It will be removed in future > releases of gem5. > TypeError: makeTopology() missing 1 required positional argument: 'Router' > > At: > gem5/configs/ruby/Ruby.py(262): create_system > configs/deprecated/example/se.py(268): <module> > src/python/m5/main.py(669): main > ======================================================================== > > I understand that the se.py file may not be equipped to run a HeteroGarnet > simulation, but I could not find any other simulation files that would help > me. > > I would really appreciate it if you could help me find a simulation file > along with any modifications needed to Gem5 to support a simulation with > the Kite Large topology. > > Thank you again for your help. > > Sincerely, > Preet. > > > On Wed, Feb 21, 2024 at 8:08 PM Srikant Bharadwaj <srikan...@gmail.com> > wrote: > >> Hi Preet, >> 1. I am attaching a config file for Kite Large topology that you can use >> as a reference for building chiplet-based topologies. More info on Kite >> Large can be found in this paper: >> https://dl.acm.org/doi/abs/10.5555/3437539.3437683 >> 2. HeteroGarnet only handles the network traffic. So HeteroGarnet is can >> handle any thread pinning that happens on the core levels as long as the >> cores are connected to each other using a topology and Heterogarnet is >> enabled. >> 3. Yes, you can perform SE mode simulations as well as Garnet standalone >> simulations with HeteroGarnet. Let me know if you have any questions. >> >> Thanks, >> Srikant >> >> >> >> On Wed, Feb 21, 2024 at 1:55 PM Preet Derasari via gem5-users < >> gem5-users@gem5.org> wrote: >> >>> Dear Dr. Krishna, >>> >>> Thank you so much for your response. >>> >>> I read the documentation you linked to in your email and have a few >>> questions. >>> 1. Are there any example config files that you are aware of that can >>> help me start with chiplet simulation (with some basic routing techniques >>> and topologies)? If so, could you point me to them? >>> 2. How does HeteroGarnet assign processing and other nodes to an >>> application? Can I use methods like CPUSET() in C++ to assign a simulated >>> core (node) to a thread (created using thread)? >>> 3. Can I perform SE mode simulations of my applications, or is >>> HeteroGarnet only applicable to FS (or the new gem5 v22 "boards")? >>> >>> I really appreciate your help. >>> >>> Thank you. Sincerely, >>> Preet. >>> >>> >>> On Wed, Feb 21, 2024 at 11:24 AM Krishna, Tushar <tus...@ece.gatech.edu> >>> wrote: >>> >>>> The latest version of garnet in the gem5 repo allows you to model >>>> multi-chiplet NoCs. *[The gem5_chips repo is deprecated - and was >>>> actually forked off an earlier version of HeteroGarnet].* >>>> Here is its documentation on the gem5 wiki: >>>> https://www.gem5.org/documentation/general_docs/ruby/heterogarnet/ >>>> >>>> Best, >>>> Tushar >>>> On Feb 21, 2024 at 11:17 AM -0500, Preet Derasari via gem5-users < >>>> gem5-users@gem5.org>, wrote: >>>> >>>> Hi, >>>> >>>> Does anyone know how to do a chiplet based simulation on the latest >>>> Gem5 version with garnet? >>>> >>>> My basic requirements are: running distributed C++ applications (using >>>> multi-threading) on the Gem5 O3CPYU type, having the ability to control the >>>> number of cores on individual chiplet dies (even one core per die is >>>> sufficient), control the D-to-D bandwidth, and getting various statistics >>>> including power consumption per die and in the interposer, overall latency >>>> of communication between dies. >>>> >>>> On the other hand these are optional: configuring a package with >>>> different topologies (mesh XY, butterfly, etc), possibly different >>>> packaging techniques (like 2D, 2.5D, 3D), simulate heterogenous components >>>> like GPU with CPU, and other NoC parameters like flit with, interposer >>>> width, etc. >>>> >>>> I tried an older version of Gem5 from Dr. Tushar Krishna's group called >>>> gem5_chips (https://github.com/GT-CHIPS/gem5_chips) but I had to use >>>> an older version of Python (2.7) and GCC (8) to even compile Gem5 on an >>>> Ubuntu 20.04 system. Despite that I was not able to run their benchmark >>>> beyond a certain instruction limit (using max-insts) since the simulator >>>> started throwing assertion errors in the garnet2.0/OutVcState.cc code. >>>> >>>> I would really appreciate it if someone can point me towards the right >>>> direction here. >>>> >>>> Thank you. Best regards, >>>> Preet. >>>> >>>> _______________________________________________ >>> gem5-users mailing list -- gem5-users@gem5.org >>> To unsubscribe send an email to gem5-users-le...@gem5.org >>> >> _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org >
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