Rename splitter result (#68303)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68303
Result of splitter is run on either accelerator or directly on gpu, rename gpu part graph to run_on_gpu
Test Plan: buck test mode/opt caffe2/test:trt_tools_test
Reviewed By: 842974287
Differential Revision: D32392492
fbshipit-source-id: b085376c00c1097752e856e22c631d74a0fbc38f