[Docs
] Update and make improvements
#5819
Merged
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What does this PR do?
Creating tensors directly on the GPU is ~22 times, and creating them directly as half-precision is ~4 times faster.
-- Experiment environment:
-- CPU: AMD Ryzen 5 3550H
-- GPU: NVIDIA GeForce GTX 1650 Mobile / Max-Q
-- Platform: Linux-6.2.0-36-generic-x86_64-with-glibc2.35
-- Python version: 3.10.12
-- PyTorch version: 2.1.1
Of course, at the end of the day, the time for creating tensors in the docs doesn't create a visible difference, but I edited them as best practices.
Removed .long() castings because the tensors were already created .long() format by default.
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