OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity
327,113 Commits 31 Branches 0 Tags 2.2 GiB
Commit Graph

7 Commits

Author SHA1 Message Date
Gheorghe-Teodor Bercea a1d20506e7 [OpenMP][libomptarget] Add support for unified memory for regular maps 
Summary:
This patch adds support for using unified memory in the case of regular maps that happen when a target region is offloaded to the device.

For cases where only a single version of the data is required then the host address can be used. When variables need to be privatized in any way or globalized, then the copy to the device is still required for correctness.

Reviewers: ABataev, jdoerfert, Hahnfeld, AlexEichenberger, caomhin, grokos

Reviewed By: Hahnfeld

Subscribers: mgorny, guansong, openmp-commits

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D65001

llvm-svn: 368192
 2019-08-07 17:29:45 +00:00
Ron Lieberman 59532488b1 [OPENMP] Resolve lost LoopTripCnt for subsequent loops in same thread. 
Remove loopTripCnt from threaded device stack after consuming it.
Added a libomptarget DP message to aid in future debugging and to
validate the added testcase, which only runs in Debug build.

Differential Revision: https://reviews.llvm.org/D64808

llvm-svn: 366349
 2019-07-17 17:07:52 +00:00
Alexey Bataev 42816107f7 [OPENMP]Fix threadid in __kmpc_omp_taskwait call for dependent target calls. 
Summary:
We used to call __kmpc_omp_taskwait function with global threadid set to
0. It may crash the application at the runtime if the thread executing
 target region is not a master thread.

Reviewers: grokos, kkwli0

Subscribers: guansong, jdoerfert, caomhin, openmp-commits

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D64571

llvm-svn: 366220
 2019-07-16 15:51:32 +00:00
Gheorghe-Teodor Bercea 9e9c918259 [OpenMP][libomptarget] Enable requires flags for target libraries. 
Summary:
Target link variables are currently implemented by creating a copy of the variables on the device side and unified memory never gets exploited.

When the prgram uses the:

```
#pragma omp requires unified_shared_memory
```

directive in conjunction with a declare target link, the linked variable is no longer allocated on the device and the host version is used instead.

This behavior is overridden by performing an explicit mapping.

A Clang side patch is required.

Reviewers: ABataev, AlexEichenberger, grokos, Hahnfeld

Reviewed By: AlexEichenberger, grokos, Hahnfeld

Subscribers: Hahnfeld, jfb, guansong, jdoerfert, openmp-commits

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D60223

llvm-svn: 361294
 2019-05-21 19:35:02 +00:00
George Rokos 7ec263672c [OpenMP] libomptarget: test correction for use with OpenMP 4.5 
Differential Revision: https://reviews.llvm.org/D32562

Thanks to Sergey Dmitriev for submitting the patch.

llvm-svn: 301577
 2017-04-27 18:54:00 +00:00
Paul Osmialowski 1e254c5295 Add AArch64 support. 
This adds AArch64 support to recently added part of the runtime responsible for offloading to target. This piece of code allows offloading-to-self on AArch64 machines.

Differential Revision: https://reviews.llvm.org/D30644

llvm-svn: 297070
 2017-03-06 21:00:07 +00:00
George Rokos 2467df6e4f [OpenMP] Initial implementation of OpenMP offloading library - libomptarget. 
This is the patch upstreaming the device-agnostic part of libomptarget.

Differential Revision: https://reviews.llvm.org/D14031

llvm-svn: 293094
 2017-01-25 21:27:24 +00:00