GitLab

* [Feature] enable socket net_type for rpc

* fix lint

* fix lint

* fix build issue on windows

* fix test failure on windows

* fix test failure

* fix cpp unit test failure

* net_type blocking max_try_times

* fix other comments

* fix lint

* fix comment

* fix lint

* fix cpp

* fix distributed multi-GPU example device

* try Join

* update version requirement in README

* use model.join

* fix docs
Co-authored-by: Jinjing Zhou <VoVAllen@users.noreply.github.com>

* huuuuge update

* remove

* lint

* lint

* fix

* what happened to nccl

* update multi-gpu unsupervised graphsage example

* replace most of the dgl.mp.process with torch.mp.spawn

* update if condition for use_uva case

* update user guide

* address comments

* incorporating suggestions from @jermainewang

* oops

* fix tutorial to pass CI

* oops

* fix again
Co-authored-by: Xin Yao <xiny@nvidia.com>