| commit | b7ec7d760d1120683fef1a0ad6c03ddf4b8b7d0c | [log] [tgz] |
|---|---|---|
| author | Joel Schlosser <jbschlosser@fb.com> | Tue Sep 14 19:51:32 2021 -0700 |
| committer | Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com> | Tue Sep 14 19:52:59 2021 -0700 |
| tree | 5f4cb7e41a44762ed7d63bd3e6eb13191818ca67 | |
| parent | 6ab97fbc287ea89ce81abcb24829b502aeb309cc [diff] |
Generic test parametrization functionality (#60753)
Summary:
This PR plays around with implementation & usage of a `parametrize` decorator for test parametrization similar to `pytest.mark.parametrize`, based on previous work introducing a `_TestParametrizer` class. It works with the internal `DeviceTest` hierarchy & composes with `dtype`, `skip*`, and other decorators. Basic usage is demonstrated in `test/test_blah.py`:
```python
import unittest
from itertools import product
from torch.testing._internal.common_device_type import (
instantiate_device_type_tests, deviceCountAtLeast, ops)
from torch.testing._internal.common_methods_invocations import op_db
from torch.testing._internal.common_utils import (
TestCase, run_tests, parametrize, instantiate_parametrized_tests, subtest)
class TestBlah(TestCase):
parametrize("x", range(5))
def test_default_names(self, x):
print('Passed in:', x)
# Use default names but add an expected failure.
parametrize("x", [subtest(0, decorators=[unittest.expectedFailure]),
*range(1, 5)])
def test_default_names_expected_failure(self, x):
if x == 0:
raise RuntimeError('Boom')
print('Passed in:', x)
parametrize("bias", [False, True], name_fn=lambda b: 'bias' if b else 'no_bias')
def test_custom_names(self, bias):
print('Passed in:', bias)
parametrize("bias", [subtest(True, name='bias'),
subtest(False, name='no_bias')])
def test_custom_names_alternate(self, bias):
print('Passed in:', bias)
parametrize("x,y", [(1, 2), (1, 3), (1, 4)])
def test_two_things_default_names(self, x, y):
print('Passed in:', x, y)
parametrize("x", [1, 2, 3])
parametrize("y", [4, 5, 6])
def test_two_things_composition(self, x, y):
print('Passed in:', x, y)
parametrize("x", [subtest(0, decorators=[unittest.expectedFailure]),
*range(1, 3)])
parametrize("y", [4, 5, subtest(6, decorators=[unittest.expectedFailure])])
def test_two_things_composition_expected_failure(self, x, y):
if x == 0 or y == 6:
raise RuntimeError('Boom')
print('Passed in:', x, y)
parametrize("x", [1, 2])
parametrize("y", [3, 4])
parametrize("z", [5, 6])
def test_three_things_composition(self, x, y, z):
print('Passed in:', x, y, z)
parametrize("x", [1, 2], name_fn=str)
parametrize("y", [3, 4], name_fn=str)
parametrize("z", [5, 6], name_fn=str)
def test_three_things_composition_custom_names(self, x, y, z):
print('Passed in:', x, y, z)
parametrize("x,y", product(range(2), range(3)))
def test_two_things_product(self, x, y):
print('Passed in:', x, y)
parametrize("x,y", [subtest((1, 2), name='double'),
subtest((1, 3), name='triple'),
subtest((1, 4), name='quadruple')])
def test_two_things_custom_names(self, x, y):
print('Passed in:', x, y)
parametrize("x,y", [(1, 2), (1, 3), (1, 4)], name_fn=lambda x, y: '{}_{}'.format(x, y))
def test_two_things_custom_names_alternate(self, x, y):
print('Passed in:', x, y)
class TestDeviceBlah(TestCase):
parametrize("x", range(10))
def test_default_names(self, device, x):
print('Passed in:', device, x)
parametrize("x,y", [(1, 2), (3, 4), (5, 6)])
def test_two_things(self, device, x, y):
print('Passed in:', device, x, y)
deviceCountAtLeast(1)
def test_multiple_devices(self, devices):
print('Passed in:', devices)
ops(op_db)
parametrize("flag", [False, True], lambda f: 'flag_enabled' if f else 'flag_disabled')
def test_op_parametrized(self, device, dtype, op, flag):
print('Passed in:', device, dtype, op, flag)
instantiate_parametrized_tests(TestBlah)
instantiate_device_type_tests(TestDeviceBlah, globals())
if __name__ == '__main__':
run_tests()
```
Generated tests:
```
TestBlah.test_custom_names_alternate_bias
TestBlah.test_custom_names_alternate_no_bias
TestBlah.test_custom_names_bias
TestBlah.test_custom_names_no_bias
TestBlah.test_default_names_expected_failure_x_0
TestBlah.test_default_names_expected_failure_x_1
TestBlah.test_default_names_expected_failure_x_2
TestBlah.test_default_names_expected_failure_x_3
TestBlah.test_default_names_expected_failure_x_4
TestBlah.test_default_names_x_0
TestBlah.test_default_names_x_1
TestBlah.test_default_names_x_2
TestBlah.test_default_names_x_3
TestBlah.test_default_names_x_4
TestBlah.test_three_things_composition_custom_names_1_3_5
TestBlah.test_three_things_composition_custom_names_1_3_6
TestBlah.test_three_things_composition_custom_names_1_4_5
TestBlah.test_three_things_composition_custom_names_1_4_6
TestBlah.test_three_things_composition_custom_names_2_3_5
TestBlah.test_three_things_composition_custom_names_2_3_6
TestBlah.test_three_things_composition_custom_names_2_4_5
TestBlah.test_three_things_composition_custom_names_2_4_6
TestBlah.test_three_things_composition_x_1_y_3_z_5
TestBlah.test_three_things_composition_x_1_y_3_z_6
TestBlah.test_three_things_composition_x_1_y_4_z_5
TestBlah.test_three_things_composition_x_1_y_4_z_6
TestBlah.test_three_things_composition_x_2_y_3_z_5
TestBlah.test_three_things_composition_x_2_y_3_z_6
TestBlah.test_three_things_composition_x_2_y_4_z_5
TestBlah.test_three_things_composition_x_2_y_4_z_6
TestBlah.test_two_things_composition_expected_failure_x_0_y_4
TestBlah.test_two_things_composition_expected_failure_x_0_y_5
TestBlah.test_two_things_composition_expected_failure_x_0_y_6
TestBlah.test_two_things_composition_expected_failure_x_1_y_4
TestBlah.test_two_things_composition_expected_failure_x_1_y_5
TestBlah.test_two_things_composition_expected_failure_x_1_y_6
TestBlah.test_two_things_composition_expected_failure_x_2_y_4
TestBlah.test_two_things_composition_expected_failure_x_2_y_5
TestBlah.test_two_things_composition_expected_failure_x_2_y_6
TestBlah.test_two_things_composition_x_1_y_4
TestBlah.test_two_things_composition_x_1_y_5
TestBlah.test_two_things_composition_x_1_y_6
TestBlah.test_two_things_composition_x_2_y_4
TestBlah.test_two_things_composition_x_2_y_5
TestBlah.test_two_things_composition_x_2_y_6
TestBlah.test_two_things_composition_x_3_y_4
TestBlah.test_two_things_composition_x_3_y_5
TestBlah.test_two_things_composition_x_3_y_6
TestBlah.test_two_things_custom_names_alternate_1_2
TestBlah.test_two_things_custom_names_alternate_1_3
TestBlah.test_two_things_custom_names_alternate_1_4
TestBlah.test_two_things_custom_names_double
TestBlah.test_two_things_custom_names_quadruple
TestBlah.test_two_things_custom_names_triple
TestBlah.test_two_things_default_names_x_1_y_2
TestBlah.test_two_things_default_names_x_1_y_3
TestBlah.test_two_things_default_names_x_1_y_4
TestBlah.test_two_things_product_x_0_y_0
TestBlah.test_two_things_product_x_0_y_1
TestBlah.test_two_things_product_x_0_y_2
TestBlah.test_two_things_product_x_1_y_0
TestBlah.test_two_things_product_x_1_y_1
TestBlah.test_two_things_product_x_1_y_2
TestDeviceBlahCPU.test_default_names_x_0_cpu
TestDeviceBlahCPU.test_default_names_x_1_cpu
TestDeviceBlahCPU.test_default_names_x_2_cpu
TestDeviceBlahCPU.test_default_names_x_3_cpu
TestDeviceBlahCPU.test_default_names_x_4_cpu
TestDeviceBlahCPU.test_default_names_x_5_cpu
TestDeviceBlahCPU.test_default_names_x_6_cpu
TestDeviceBlahCPU.test_default_names_x_7_cpu
TestDeviceBlahCPU.test_default_names_x_8_cpu
TestDeviceBlahCPU.test_default_names_x_9_cpu
TestDeviceBlahCPU.test_multiple_devices_cpu
TestDeviceBlahCPU.test_op_parametrized_<opname>_<variant>_cpu_uint8_flag_enabled_cpu
TestDeviceBlahCPU.test_two_things_x_1_y_2_cpu
TestDeviceBlahCPU.test_two_things_x_3_y_4_cpu
TestDeviceBlahCPU.test_two_things_x_5_y_6_cpu
TestDeviceBlahMETA.test_default_names_x_0_meta
TestDeviceBlahMETA.test_default_names_x_1_meta
TestDeviceBlahMETA.test_default_names_x_2_meta
TestDeviceBlahMETA.test_default_names_x_3_meta
TestDeviceBlahMETA.test_default_names_x_4_meta
TestDeviceBlahMETA.test_default_names_x_5_meta
TestDeviceBlahMETA.test_default_names_x_6_meta
TestDeviceBlahMETA.test_default_names_x_7_meta
TestDeviceBlahMETA.test_default_names_x_8_meta
TestDeviceBlahMETA.test_default_names_x_9_meta
TestDeviceBlahMETA.test_multiple_devices_meta
TestDeviceBlahMETA.test_op_parametrized_<opname>_<variant>_meta_uint8_flag_enabled_meta
TestDeviceBlahMETA.test_two_things_x_1_y_2_meta
TestDeviceBlahMETA.test_two_things_x_3_y_4_meta
TestDeviceBlahMETA.test_two_things_x_5_y_6_meta
```
Caveats:
* `parametrize` decorators cannot be "stacked" yet; each one overwrites the previous. This will change to either:
* Allow stacking of multiple decorators
* Error out with a nice error message if multiple decorators are specified
The PR introduces `instantiate_parametrized_tests()` in addition to `instantiate_device_type_tests()`. The former should be used for non-device-specific tests, and the latter should be used for device-specific tests, as usual. Both of these support the `parametrize` decorator. Only the latter supports the `ops` decorator (no change here- this was already the case).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60753
Reviewed By: saketh-are
Differential Revision: D30606615
Pulled By: jbschlosser
fbshipit-source-id: a34f36d643f68a6e221f419d9bb3e1ae1d84dd65
PyTorch is a Python package that provides two high-level features:
You can reuse your favorite Python packages such as NumPy, SciPy, and Cython to extend PyTorch when needed.
| System | 3.6 | 3.7 | 3.8 |
|---|---|---|---|
| Linux CPU | — | ||
| Linux GPU | — | ||
| Windows CPU / GPU | — | — | |
| Linux (ppc64le) CPU | — | — | |
| Linux (ppc64le) GPU | — | — | |
| Linux (aarch64) CPU |
See also the ci.pytorch.org HUD.
At a granular level, PyTorch is a library that consists of the following components:
| Component | Description |
|---|---|
| torch | a Tensor library like NumPy, with strong GPU support |
| torch.autograd | a tape-based automatic differentiation library that supports all differentiable Tensor operations in torch |
| torch.jit | a compilation stack (TorchScript) to create serializable and optimizable models from PyTorch code |
| torch.nn | a neural networks library deeply integrated with autograd designed for maximum flexibility |
| torch.multiprocessing | Python multiprocessing, but with magical memory sharing of torch Tensors across processes. Useful for data loading and Hogwild training |
| torch.utils | DataLoader and other utility functions for convenience |
Usually, PyTorch is used either as:
Elaborating Further:
If you use NumPy, then you have used Tensors (a.k.a. ndarray).
PyTorch provides Tensors that can live either on the CPU or the GPU and accelerates the computation by a huge amount.
We provide a wide variety of tensor routines to accelerate and fit your scientific computation needs such as slicing, indexing, math operations, linear algebra, reductions. And they are fast!
PyTorch has a unique way of building neural networks: using and replaying a tape recorder.
Most frameworks such as TensorFlow, Theano, Caffe, and CNTK have a static view of the world. One has to build a neural network and reuse the same structure again and again. Changing the way the network behaves means that one has to start from scratch.
With PyTorch, we use a technique called reverse-mode auto-differentiation, which allows you to change the way your network behaves arbitrarily with zero lag or overhead. Our inspiration comes from several research papers on this topic, as well as current and past work such as torch-autograd, autograd, Chainer, etc.
While this technique is not unique to PyTorch, it's one of the fastest implementations of it to date. You get the best of speed and flexibility for your crazy research.
PyTorch is not a Python binding into a monolithic C++ framework. It is built to be deeply integrated into Python. You can use it naturally like you would use NumPy / SciPy / scikit-learn etc. You can write your new neural network layers in Python itself, using your favorite libraries and use packages such as Cython and Numba. Our goal is to not reinvent the wheel where appropriate.
PyTorch is designed to be intuitive, linear in thought, and easy to use. When you execute a line of code, it gets executed. There isn't an asynchronous view of the world. When you drop into a debugger or receive error messages and stack traces, understanding them is straightforward. The stack trace points to exactly where your code was defined. We hope you never spend hours debugging your code because of bad stack traces or asynchronous and opaque execution engines.
PyTorch has minimal framework overhead. We integrate acceleration libraries such as Intel MKL and NVIDIA (cuDNN, NCCL) to maximize speed. At the core, its CPU and GPU Tensor and neural network backends are mature and have been tested for years.
Hence, PyTorch is quite fast – whether you run small or large neural networks.
The memory usage in PyTorch is extremely efficient compared to Torch or some of the alternatives. We've written custom memory allocators for the GPU to make sure that your deep learning models are maximally memory efficient. This enables you to train bigger deep learning models than before.
Writing new neural network modules, or interfacing with PyTorch's Tensor API was designed to be straightforward and with minimal abstractions.
You can write new neural network layers in Python using the torch API or your favorite NumPy-based libraries such as SciPy.
If you want to write your layers in C/C++, we provide a convenient extension API that is efficient and with minimal boilerplate. No wrapper code needs to be written. You can see a tutorial here and an example here.
Commands to install from binaries via Conda or pip wheels are on our website: https://pytorch.org
Python wheels for NVIDIA's Jetson Nano, Jetson TX2, and Jetson AGX Xavier are available via the following URLs:
They require JetPack 4.2 and above, and @dusty-nv maintains them
If you are installing from source, you will need Python 3.6.2 or later and a C++14 compiler. Also, we highly recommend installing an Anaconda environment. You will get a high-quality BLAS library (MKL) and you get controlled dependency versions regardless of your Linux distro.
Once you have Anaconda installed, here are the instructions.
If you want to compile with CUDA support, install
If you want to disable CUDA support, export environment variable USE_CUDA=0. Other potentially useful environment variables may be found in setup.py.
If you are building for NVIDIA's Jetson platforms (Jetson Nano, TX1, TX2, AGX Xavier), Instructions to install PyTorch for Jetson Nano are available here
If you want to compile with ROCm support, install
If you want to disable ROCm support, export environment variable USE_ROCM=0. Other potentially useful environment variables may be found in setup.py.
Common
conda install astunparse numpy ninja pyyaml mkl mkl-include setuptools cmake cffi typing_extensions future six requests dataclasses
On Linux
# CUDA only: Add LAPACK support for the GPU if needed conda install -c pytorch magma-cuda110 # or the magma-cuda* that matches your CUDA version from https://anaconda.org/pytorch/repo
On MacOS
# Add these packages if torch.distributed is needed conda install pkg-config libuv
On Windows
# Add these packages if torch.distributed is needed. # Distributed package support on Windows is a prototype feature and is subject to changes. conda install -c conda-forge libuv=1.39
git clone --recursive https://github.com/pytorch/pytorch cd pytorch # if you are updating an existing checkout git submodule sync git submodule update --init --recursive --jobs 0
On Linux
export CMAKE_PREFIX_PATH=${CONDA_PREFIX:-"$(dirname $(which conda))/../"} python setup.py install
Note that if you are compiling for ROCm, you must run this command first:
python tools/amd_build/build_amd.py
Note that if you are using Anaconda, you may experience an error caused by the linker:
build/temp.linux-x86_64-3.7/torch/csrc/stub.o: file not recognized: file format not recognized collect2: error: ld returned 1 exit status error: command 'g++' failed with exit status 1
This is caused by ld from Conda environment shadowing the system ld. You should use a newer version of Python that fixes this issue. The recommended Python version is 3.6.10+, 3.7.6+ and 3.8.1+.
On macOS
export CMAKE_PREFIX_PATH=${CONDA_PREFIX:-"$(dirname $(which conda))/../"} MACOSX_DEPLOYMENT_TARGET=10.9 CC=clang CXX=clang++ python setup.py install
CUDA is not supported on macOS.
On Windows
Choose Correct Visual Studio Version.
Sometimes there are regressions in new versions of Visual Studio, so it‘s best to use the same Visual Studio Version 16.8.5 as Pytorch CI’s. You can use Visual Studio Enterprise, Professional or Community though PyTorch CI uses Visual Studio BuildTools.
If you want to build legacy python code, please refer to Building on legacy code and CUDA
Build with CPU
It's fairly easy to build with CPU.
Note on OpenMP: The desired OpenMP implementation is Intel OpenMP (iomp). In order to link against iomp, you'll need to manually download the library and set up the building environment by tweaking CMAKE_INCLUDE_PATH and LIB. The instruction here is an example for setting up both MKL and Intel OpenMP. Without these configurations for CMake, Microsoft Visual C OpenMP runtime (vcomp) will be used.
Build with CUDA
NVTX is needed to build Pytorch with CUDA. NVTX is a part of CUDA distributive, where it is called “Nsight Compute”. To install it onto already installed CUDA run CUDA installation once again and check the corresponding checkbox. Make sure that CUDA with Nsight Compute is installed after Visual Studio.
Currently, VS 2017 / 2019, and Ninja are supported as the generator of CMake. If ninja.exe is detected in PATH, then Ninja will be used as the default generator, otherwise, it will use VS 2017 / 2019.
If Ninja is selected as the generator, the latest MSVC will get selected as the underlying toolchain.
Additional libraries such as Magma, oneDNN, a.k.a MKLDNN or DNNL, and Sccache are often needed. Please refer to the installation-helper to install them.
You can refer to the build_pytorch.bat script for some other environment variables configurations
cmd :: Set the environment variables after you have downloaded and upzipped the mkl package, :: else CMake would throw error as `Could NOT find OpenMP`. set CMAKE_INCLUDE_PATH={Your directory}\mkl\include set LIB={Your directory}\mkl\lib;%LIB% :: Read the content in the previous section carefully before you proceed. :: [Optional] If you want to override the underlying toolset used by Ninja and Visual Studio with CUDA, please run the following script block. :: "Visual Studio 2019 Developer Command Prompt" will be run automatically. :: Make sure you have CMake >= 3.12 before you do this when you use the Visual Studio generator. set CMAKE_GENERATOR_TOOLSET_VERSION=14.27 set DISTUTILS_USE_SDK=1 for /f "usebackq tokens=*" %i in (`"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" -version [15^,17^) -products * -latest -property installationPath`) do call "%i\VC\Auxiliary\Build\vcvarsall.bat" x64 -vcvars_ver=%CMAKE_GENERATOR_TOOLSET_VERSION% :: [Optional] If you want to override the CUDA host compiler set CUDAHOSTCXX=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110\bin\HostX64\x64\cl.exe python setup.py install
You can adjust the configuration of cmake variables optionally (without building first), by doing the following. For example, adjusting the pre-detected directories for CuDNN or BLAS can be done with such a step.
On Linux
export CMAKE_PREFIX_PATH=${CONDA_PREFIX:-"$(dirname $(which conda))/../"} python setup.py build --cmake-only ccmake build # or cmake-gui build
On macOS
export CMAKE_PREFIX_PATH=${CONDA_PREFIX:-"$(dirname $(which conda))/../"} MACOSX_DEPLOYMENT_TARGET=10.9 CC=clang CXX=clang++ python setup.py build --cmake-only ccmake build # or cmake-gui build
You can also pull a pre-built docker image from Docker Hub and run with docker v19.03+
docker run --gpus all --rm -ti --ipc=host pytorch/pytorch:latest
Please note that PyTorch uses shared memory to share data between processes, so if torch multiprocessing is used (e.g. for multithreaded data loaders) the default shared memory segment size that container runs with is not enough, and you should increase shared memory size either with --ipc=host or --shm-size command line options to nvidia-docker run.
NOTE: Must be built with a docker version > 18.06
The Dockerfile is supplied to build images with CUDA 11.1 support and cuDNN v8. You can pass PYTHON_VERSION=x.y make variable to specify which Python version is to be used by Miniconda, or leave it unset to use the default.
make -f docker.Makefile # images are tagged as docker.io/${your_docker_username}/pytorch
To build documentation in various formats, you will need Sphinx and the readthedocs theme.
cd docs/ pip install -r requirements.txt
You can then build the documentation by running make <format> from the docs/ folder. Run make to get a list of all available output formats.
If you get a katex error run npm install katex. If it persists, try npm install -g katex
Installation instructions and binaries for previous PyTorch versions may be found on Our Website.
Three-pointers to get you started:
PyTorch has a 90-day release cycle (major releases). Please let us know if you encounter a bug by filing an issue.
We appreciate all contributions. If you are planning to contribute back bug-fixes, please do so without any further discussion.
If you plan to contribute new features, utility functions, or extensions to the core, please first open an issue and discuss the feature with us. Sending a PR without discussion might end up resulting in a rejected PR because we might be taking the core in a different direction than you might be aware of.
To learn more about making a contribution to Pytorch, please see our Contribution page.
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PyTorch is currently maintained by Adam Paszke, Sam Gross, Soumith Chintala and Gregory Chanan with major contributions coming from hundreds of talented individuals in various forms and means. A non-exhaustive but growing list needs to mention: Trevor Killeen, Sasank Chilamkurthy, Sergey Zagoruyko, Adam Lerer, Francisco Massa, Alykhan Tejani, Luca Antiga, Alban Desmaison, Andreas Koepf, James Bradbury, Zeming Lin, Yuandong Tian, Guillaume Lample, Marat Dukhan, Natalia Gimelshein, Christian Sarofeen, Martin Raison, Edward Yang, Zachary Devito.
Note: This project is unrelated to hughperkins/pytorch with the same name. Hugh is a valuable contributor to the Torch community and has helped with many things Torch and PyTorch.
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