Adding ppc64le support for PyTorch engine

[Sapana-Khemkar]

Description

Adding support to ppc64le architecture to pytorch-engine.
By referring these instructions have built and test jni locally on my ppc64le VM with opence conda pytorch. Build and tests completed successfully.

[frankfliu]

We don't have plan to ship ppc64le native libraries for PyTorch engine.

Since you are able to build JNI, you can package your JNI and the .so files in a jar or save them in DJL cache folder. DJL should be able to pick it up.

[Sapana-Khemkar]

@frankfliu
DJL is dependency for https://github.com/opensearch-project/ml-commons
We are working on enabling ppc64le support for opensearch. Here is issue opensearch-project/opensearch-build#3122.
If you can consider this request, we are happy to work with you.

[frankfliu]

The challenge part is how to create a release pipeline for ppc. And how to maintain this pipeline for new version of PyTorch

[Sapana-Khemkar]

The challenge part is how to create a release pipeline for ppc. And how to maintain this pipeline for new version of PyTorch

@frankfliu you can use multiarch/qemu-user-static container image for implementing workflow for ppc64le. We can support you to implement the same.