This reverts commit 91ef3c8.

Reverted #74793 on behalf of https://github.com/seemethere

See #74793 for more details
Redo everything in one pr. This diff added test model generation script and updated android and ios tests.
Pull Request resolved: #74947
Approved by: https://github.com/kit1980

Summary:
See #74793 for more details
Redo everything in one pr. This diff added test model generation script and updated android and ios tests.

Pull Request resolved: #74947
Approved by: https://github.com/kit1980

allow-large-files

Test Plan: contbuild & OSS CI, see https://hud.pytorch.org/commit/pytorch/pytorch/28a4b4759add0b3eb0f4c34a1e042be4f93e976e

Reviewed By: atalman

Differential Revision: D35284140

Pulled By: linbinyu

fbshipit-source-id: 50c73e006554b8e4301275599433b69950ff9e33

This pr

moved some model generation scripts to a central place (mobile net v2, android test model)
updated scripts so these models can run on Android (Java doesn't support certain scalar types as return value)
updated model generation script to take arguments (generate models for android/ios, checked-in model or on-the-fly model)
add Android instrumentation tests for these new models
After this change, the Android instrumentation test will run 35 models which covered 91% of production ops. The coverage information can be found in this file: https://github.com/pytorch/pytorch/blob/master/test/mobile/model_test/coverage.yaml

Note that these models are checked-in for back compatibility check (to ensure they can run with newer pytorch versions).

The script generates models for mobile test. For each model we have a "checked-in" version
and an "on-the-fly" version. The "on-the-fly" version will be generated during test, and
should not be committed to the repo. The "checked-in" version is used for back compatibility check.

Note that Android only support checked-in model right now. iOS can test both (in another pr).

use 'gen_test_model.py android-test' to generate on the fly models for android
use 'gen_test_model.py ios-test' to generate on the fly models for ios
use 'python gen_test_model.py android' to generate checked-in models for android
use 'python gen_test_model.py ios' to generate on-the-fly models for ios
use 'gen_test_model.py <model_name_no_suffix>' to update the given checked-in model

Pull Request resolved: pytorch#74793
Approved by: https://github.com/kit1980

This reverts commit 016d17b.

Reverted pytorch#74793 on behalf of https://github.com/seemethere

See pytorch#74793 for more details
Redo everything in one pr. This diff added test model generation script and updated android and ios tests.
Pull Request resolved: pytorch#74947
Approved by: https://github.com/kit1980