
easydist
Automated Parallelization System and Infrastructure for Multiple Ecosystems
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EasyDist is an automated parallelization system and infrastructure designed for multiple ecosystems. It offers usability by making parallelizing training or inference code effortless with just a single line of change. It ensures ecological compatibility by serving as a centralized source of truth for SPMD rules at the operator-level for various machine learning frameworks. EasyDist decouples auto-parallel algorithms from specific frameworks and IRs, allowing for the development and benchmarking of different auto-parallel algorithms in a flexible manner. The architecture includes MetaOp, MetaIR, and the ShardCombine Algorithm for SPMD sharding rules without manual annotations.
README:
EasyDist is an automated parallelization system and infrastructure designed for multiple ecosystems, offering the following key features:
-
Usability. With EasyDist, parallelizing your training or inference code to a larger scale becomes effortless with just a single line of change.
-
Ecological Compatibility. EasyDist serves as a centralized source of truth for SPMD rules at the operator-level for various machine learning frameworks. Currently, EasyDist currently supports PyTorch, Jax natively, and the TVM Tensor Expression operator for SPMD rules.
-
Infrastructure. EasyDist decouples auto-parallel algorithms from specific machine learning frameworks and IRs. This design choice allows for the development and benchmarking of different auto-parallel algorithms in a more flexible manner, leveraging the capabilities and abstractions provided by EasyDist.
To parallelize your training loop using EasyDist, you can use the easydist_compile
decorator. Here's an example of how it can be used with PyTorch:
@easydist_compile()
def train_step(net, optimizer, inputs, labels):
outputs = net(inputs)
loss = nn.CrossEntropyLoss()(outputs, labels)
loss.backward()
optimizer.step()
optimizer.zero_grad()
return loss
This one-line decorator parallelizes the training step. You can find more examples in the ./examples/
directory.
EasyDist introduces the concept of MetaOp and MetaIR to decouple automatic parallelization methods from specific intermediate representations (IR) and frameworks. Additionally, it presents the ShardCombine Algorithm, which defines operator Single-Program, Multiple-Data (SPMD) sharding rules without requiring manual annotations. The architecture of EasyDist is as follows:
To install EasyDist, you can use pip and install from PyPI:
# For PyTorch users
pip install pai-easydist[torch]
# For Jax users
pip install pai-easydist[jax] -f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html
If you prefer to install EasyDist from source, you can clone the GitHub repository and then install it with the appropriate extras:
git clone https://github.com/alibaba/easydist.git && cd easydist
# EasyDist with PyTorch installation
pip install -e '.[torch]'
# EasyDist with Jax installation
pip install -e '.[jax]' -f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html
See CONTRIBUTING.md for details.
EasyDist is developed by Alibaba Group and NUS HPC-AI Lab. This work is supported by Alibaba Innovative Research(AIR).
EasyDist is licensed under the Apache License (Version 2.0). See LICENSE file. This product contains some third-party testcases under other open source licenses. See the NOTICE file for more information.
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