Files
pytorch-lightning/tests
22d7d03118 Replace meta_tags.csv with hparams.yaml (#1271)
* Add support for hierarchical dict

* Support nested Namespace

* Add docstring

* Migrate hparam flattening to each logger

* Modify URLs in CHANGELOG

* typo

* Simplify the conditional branch about Namespace

Co-Authored-By: Jirka Borovec <Borda@users.noreply.github.com>

* Update CHANGELOG.md

Co-Authored-By: Jirka Borovec <Borda@users.noreply.github.com>

* added examples section to docstring

* renamed _dict -> input_dict

* mata_tags.csv -> hparams.yaml

* code style fixes

* add pyyaml

* remove unused import

* create the member NAME_HPARAMS_FILE

* improve tests

* Update tensorboard.py

* pass the local test w/o relavents of Horovod

* formatting

* update dependencies

* fix dependencies

* Apply suggestions from code review

* add savings

* warn

* docstrings

* tests

* Apply suggestions from code review

* saving

* Apply suggestions from code review

* use default

* remove logging

* typo fixes

* update docs

* update CHANGELOG

* clean imports

* add blank lines

* Update pytorch_lightning/core/lightning.py

Co-authored-by: Adrian Wälchli <aedu.waelchli@gmail.com>

* Update pytorch_lightning/core/lightning.py

Co-authored-by: Adrian Wälchli <aedu.waelchli@gmail.com>

* back to namespace

* add docs

* test fix

* update dependencies

* add space

Co-authored-by: Jirka Borovec <Borda@users.noreply.github.com>
Co-authored-by: Adrian Wälchli <aedu.waelchli@gmail.com>
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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:

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

# install AMP support
bash tests/install_AMP.sh

# install dev deps
pip install -r tests/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 tests/requirements-devel.txt)
coverage run --source pytorch_lightning -m py.test pytorch_lightning tests examples -v --doctest-modules

# 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-pt_1_4 -f tests/Dockerfile --build-arg TORCH_VERSION=1.4 .

To build other versions, select different Dockerfile.

docker image list
docker run --rm -it pytorch_lightning:devel-pt_1_4 bash
docker image rm pytorch_lightning:devel-pt_1_4