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Jirka Borovec baf4f35027
add parsing OS env vars (#4022) 
* add parsing OS env vars

* fix env

* Apply suggestions from code review

* overwrite init

* Apply suggestions from code review
 		2020-10-09 19:34:09 -04:00
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backends Deprecate early_stop_callback Trainer argument (part 2) (#3845) 2020-10-04 17:36:47 -04:00
base removed support for EvalResult and TrainResult (#3968) 2020-10-07 22:39:16 -04:00
callbacks remove deprecated early_stop_callback (#3982) 2020-10-08 06:30:33 -04:00
checkpointing remove deprecated early_stop_callback (#3982) 2020-10-08 06:30:33 -04:00
core Bugfix/update trainer properties (#3975) 2020-10-08 10:20:55 -04:00
loggers Mocking Loggers Part 5/5 (final) (#3926) 2020-10-06 23:49:06 -04:00
metrics Update explained variance metric (#4024) 2020-10-09 19:23:12 -04:00
models remove deprecated early_stop_callback (#3982) 2020-10-08 06:30:33 -04:00
trainer add parsing OS env vars (#4022) 2020-10-09 19:34:09 -04:00
utilities Added check to verify xla device is TPU (#3274) 2020-10-06 19:54:37 +02:00
README.md fix path in CI for release & python version in all dockers & duplicated badges (#3765) 2020-10-02 05:26:21 -04:00
__init__.py changelogs clean (#3082) 2020-08-20 22:58:53 +00:00
collect_env_details.py fix tensorboard version (#3132) 2020-09-15 23:48:48 +02:00
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test_deprecated.py remove deprecated callbacks (#3979) 2020-10-08 06:37:14 -04:00
test_profiler.py RC & Docs/changelog (#1776) 2020-05-11 21:57:53 -04:00

README.md

PyTorch-Lightning Tests

Most PL tests train a full MNIST model under various trainer conditions (ddp, ddp2+amp, etc...). This provides testing for most combinations of important settings. The tests expect the model to perform to a reasonable degree of testing accuracy to pass.

Running tests

The automatic travis tests ONLY run CPU-based tests. Although these cover most of the use cases, run on a 2-GPU machine to validate the full test-suite.

To run all tests do the following:

Install Open MPI or another MPI implementation. Learn how to install Open MPI on this page.

git clone https://github.com/PyTorchLightning/pytorch-lightning
cd pytorch-lightning

# install AMP support
bash requirements/install_AMP.sh

# install dev deps
pip install -r requirements/devel.txt

# run tests
py.test -v

To test models that require GPU make sure to run the above command on a GPU machine. The GPU machine must have:

  1. At least 2 GPUs.
  2. NVIDIA-apex installed.
  3. Horovod with NCCL support: HOROVOD_GPU_ALLREDUCE=NCCL HOROVOD_GPU_BROADCAST=NCCL pip install horovod

Running Coverage

Make sure to run coverage on a GPU machine with at least 2 GPUs and NVIDIA apex installed.

cd pytorch-lightning

# generate coverage (coverage is also installed as part of dev dependencies under requirements/devel.txt)
coverage run --source pytorch_lightning -m py.test pytorch_lightning tests examples -v

# print coverage stats
coverage report -m

# exporting results
coverage xml

Building test image

You can build it on your own, note it takes lots of time, be prepared.

git clone <git-repository>
docker image build -t pytorch_lightning:devel-torch1.4 -f dockers/cuda-extras/Dockerfile --build-arg TORCH_VERSION=1.4 .

To build other versions, select different Dockerfile.

docker image list
docker run --rm -it pytorch_lightning:devel-torch1.4 bash
docker image rm pytorch_lightning:devel-torch1.4