In my time using TVM to do various research projects, I found the thing I 
wanted most of all was a model zoo -- pretrained models already pulled in to 
Relay/TVM. `tvm.relay.testing.*` was a great starting place for me, but I'd 
love to see (1) pretrained weights included, (2) a greater variety of 
state-of-the-art models, and (3) perhaps some models which are imported from 
different frontends, to serve as importing examples.

I understand that this may contradict what I see as a key feature of TVM -- 
that it should be easy to get models from any frontend into TVM, and so a model 
zoo should be theoretically unnecessary. In my limited experience, though, it 
was not necessarily straightforward to do this importing. For what it's worth, 
I may not have given the importers a fair try -- but in general I found the 
ones I used to be hard to use at best. If I cared about just one or two models 
(as some users of TVM might), then the cost to import the model would be worth 
it. In my use cases, though, I was trying to get as many models up and running 
as I could, and found that the overhead of importing was my main barrier.

I'm wondering if others have opinions on this idea. I'm no longer using TVM for 
research as directly, but I wanted, at the very least, to start the discussion 
on the idea of building a Relay model zoo.





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