Ben Sander f0c734e256 Improve async copy implementation. ...

- Add device-side signal waits when transitioning between command classes
(Kernel, H2D copy, D2H copy).
- Support waiting in staged memory copies as well.
- Add several chicken bits to control implementation:
    - HIP_DISABLE_ENQ_BARRIER
    - HIP_DISABLE_BIDIR_MEMCPY
    - HIP_ONESHOT_COPY_DEP
- Refactor signal pool to support efficient deallocation based on
signsequnm.
- Deallocate copy signals on eventSynchronize.
- Improve copy tests, add pingpong.


[ROCm/hip commit: 549b18ce77]

2016-02-22 23:15:24 -06:00

..

hip

Improve async copy implementation.

2016-02-22 23:15:24 -06:00