tree 16da64615fae2ef51b405f312e46fb0a639ffe96
parent 77b52ccb13f63ca95bd96f02662ca04ae7086bf1
author Jason Henline <jhen@google.com> 1473696581 +0000
committer Copybara-Service <copybara-worker@google.com> 1598947467 -0700

[SE] RegisteredHostMemory for async device copies

Summary:
Improve the error-prone interface that allows users to pass host
pointers that haven't been registered to asynchronous copy methods. In
CUDA, this is an extremely easy error to make, and instead of failing at
runtime, it succeeds and gives the right answers by turning the async
copy into a sync copy. So, you silently get a huge performance
degradation if you misuse the old interface. This new interface should
prevent that.

Reviewers: jlebar

Subscribers: jprice, beanz, parallel_libs-commits

Differential Revision: https://reviews.llvm.org/D24353

llvm-svn: 281225
GitOrigin-RevId: 57ea481945ffff7515b9bf3fe206f6c53ee8fd4a