Implement Complex tensor support in all reduce and all gather

[gmagogsfm]

No description provided.

[dr-ci]

💊 CI failures summary and remediations

As of commit 769b6d5 (more details on the Dr. CI page):

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• 1/2 failures possibly* introduced in this PR
  • 1/1 non-CircleCI failure(s)
• 1/2 broken upstream at merge base 8eb228a since Nov 06

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🚧 1 ongoing upstream failure:

These were probably caused by upstream breakages that are not fixed yet:

• binary_linux_libtorch_3_7m_cpu_devtoolset7_shared-with-deps_build since Nov 06
  • 🔁 rerun

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ci.pytorch.org: 1 failed

• Failed: pr/pytorch-linux-bionic-rocm3.8-py3.6

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This comment has been revised 14 times.

[wanchaol]

looks good

[facebook-github-bot]

@gmagogsfm has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[facebook-github-bot]

@gmagogsfm merged this pull request in 9d0c6e9.

[gchanan]

test?

[gmagogsfm]

test?

This change does not participate in the build yet. It will replace current Python frontend, therefore all the same test that covers complex number support would be used against this new implementation.

[pritamdamania87]

Shouldn't we add some unit tests for this?