chainer #882

	name: chainer

	on:
	schedule:
	- cron: '0 15 * * *'
	pull_request:
	paths:
	- 'chainer/**'
	- '.github/workflows/chainer.yml'

	jobs:
	examples:
	if: (github.event_name == 'schedule' && github.repository == 'optuna/optuna-examples') \|\| (github.event_name != 'schedule')
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']

	steps:
	- uses: actions/checkout@v3
	- name: setup-python${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install (apt)
	run: \|
	sudo apt-get update
	sudo apt-get -y install openmpi-bin libopenmpi-dev
	- name: Install (Python)
	run: \|
	python -m pip install --upgrade pip
	pip install --progress-bar off -U setuptools
	pip install git+https://github.com/optuna/optuna.git
	python -c 'import optuna'
	pip install git+https://github.com/optuna/optuna-integration.git
	python -c 'import optuna_integration'

	pip install -r chainer/requirements.txt
	- name: Run examples
	run: \|
	python chainer/chainer_simple.py
	python chainer/chainer_integration.py
	env:
	OMP_NUM_THREADS: 1
	- name: Run multi-node examples
	run: \|
	export OMPI_MCA_rmaps_base_oversubscribe=yes
	STORAGE_URL=sqlite:///example.db
	for file in `find chainer -name 'chainermn_*.py'`
	do
	echo $file
	STUDY_NAME=`optuna create-study --storage $STORAGE_URL`
	mpirun -n 2 -- python $file $STUDY_NAME $STORAGE_URL > /dev/null
	done
	env:
	OMP_NUM_THREADS: 1

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