[Unity][MSC][M2.1] Add pruner for model pruning #16186
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Hzfengsy
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Dec 2, 2023
Archermmt
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Dec 18, 2023
* add tool and pruner * update pruner * change debug level
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This is a pull request for MSC(Multi-System Compile)
RFC: https://discuss.tvm.apache.org/t/rfc-unity-msc-introduction-to-multi-system-compiler/15251/5
Tracking issue: #15233
This is the Milestone 2 for MSC: Use msc.runtime.Manager to manage the compiling pipeline && tools.
To limit each PR in reviewable size, the Milestone 2 will be split into some steps:
M2.1 Add Manager for compile pipeline
M2.2 Add pruner for model pruning
M2.3 Add tracker for track layer datas
M2.4 Add quantizer for quantize model
The tools are basic modules for optimize the model. They works in model rewriting as well as runtime controlling. Tool can be used in training system as well as in deploy system.
This PR add basic part of tool and pruner for all frameworks. The pruner in torch, tvm and tensorrt are tested. Pruner compress the model by given density. It works together with gym(auto optimization system, which will be added in later PRs) to prune the model automatically. It can also works together with distiller (will be added in later PRs) to update weights in pruned model.
WeightGraph is used in pruning. A WeightGraph describe the topology of weights in model. This graph can also be used in model parallel, which requires split the weights depends on topology.
cc @Hzfengsy @junrushao