Replacement policies should be fully supported. On Mon, Oct 28, 2024, 8:44 AM Beser, Nicholas D. <nick.be...@jhuapl.edu> wrote:
> Jason, > > > > There was a comment in the charts that the replacement policy was broken. > Is that still the case? > > > > I wanted to assign the students a task to experiment with different > replacement policies. > > > > Nick > > > > *From:* Jason Lowe-Power <ja...@lowepower.com> > *Sent:* Monday, October 28, 2024 11:24 AM > *To:* The gem5 Users mailing list <gem5-users@gem5.org> > *Cc:* Beser, Nicholas D. <nick.be...@jhuapl.edu> > *Subject:* [EXT] Re: [gem5-users] Does GarnetPt2Pt and GarnetMesh still > work in Gem5? > > > > *APL external email warning: *Verify sender ja...@lowepower.com before > clicking links or attachments > > > > Hi Nick, > > > > The generic topologies in Ruby (e.g., the ones in configs/topologies) were > always *very brittle*. This was especially so for topologies like Mesh > where the topology is tightly coupled to the number of each type of > controller (and even the coherence protocol!). > > > > Therefore, in the stdlib we have taken the approach that we will not > provide generic topologies. Instead, we will provide specific instances of > topologies paired with a protocol. I.e., we will provide "prebuilt" cache > hierarchies. For example, the Octopi cache: > gem5/src/python/gem5/components/cachehierarchies/ruby/caches/prebuilt/octopi_cache/octopi.py > at stable · gem5/gem5 · GitHub > <https://github.com/gem5/gem5/blob/stable/src/python/gem5/components/cachehierarchies/ruby/caches/prebuilt/octopi_cache/octopi.py#L58> > > > > To answer your question directly, the correct way to demonstrate garnet > pt2pt or mesh would be to write your own cache hierarchy. Note that you > don't need to put it in src/ or recompile gem5. Because it's pure python > using the gem5 libraries you can simply write a python file and use it. If > you create a `CacheHierarchy` then it will likely be compatible with all of > our boards including both the test board (used with traffic generators) and > all of the ISAs. > > > > Cheers, > > Jason > > > > On Sat, Oct 26, 2024 at 1:01 PM Beser, Nicholas D. via gem5-users < > gem5-users@gem5.org> wrote: > > I have been looking over the example of Garnet in the 2024 bootcamp. The > Ring-garnet does work as advertised. I was wondering if GarnetPt2Pt and > GarnetMesh still works. The example from the older 2022 bootcamp used > NULL/gem5.opt, but while the code is still in the materials/archive, the > commands don’t seem to work. The examples in 2024 seem to use > ALL_CHI/gem5.opt and not NULL. > > > > What is the right way to demonstrate Garnet Pt2Pt and Garnet_mesh? > > > > Nick > > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org > >
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