commit | a24b79676e89d31a3ed3faf8e2763bb8a7921d69 | [log] [tgz] |
---|---|---|
author | Mikhail Dvorskiy <mikhail.dvorskiy@intel.com> | Fri Oct 15 15:36:07 2021 +0300 |
committer | Copybara-Service <copybara-worker@google.com> | Fri Oct 15 05:40:31 2021 -0700 |
tree | dcb1d9047631631c0d474693a9d26abf59ea909f | |
parent | 2e8e4c90dc4a2f9551355b62662c06dd6dd4e2c7 [diff] |
[pstl] Initial implementation of OpenMP backend, on behalf of Christopher Nelson nadiasvertex@gmail.com Phabricator Review: https://reviews.llvm.org/D99836 A couple of parallel patterns still remains serial - "Parallel partial sort", and "Parallel transform scan" - there are //TODOs in the code. GitOrigin-RevId: 6069a6a5049497a32a50a49661c2f4169078bdba
Parallel STL is an implementation of the C++ standard library algorithms with support for execution policies, as specified in ISO/IEC 14882:2017 standard, commonly called C++17. The implementation also supports the unsequenced execution policy specified in Parallelism TS version 2 and proposed for the next version of the C++ standard in the C++ working group paper P1001. Parallel STL offers efficient support for both parallel and vectorized execution of algorithms. For sequential execution, it relies on an available implementation of the C++ standard library.
To use Parallel STL, you must have the following software installed:
unseq
and par_unseq
policies only have effect with compilers that support #pragma omp simd
or #pragma simd
.includes
, inplace_merge
, merge
, nth_element
, partial_sort
, partial_sort_copy
, set_difference
, set_intersection
, set_symmetric_difference
, set_union
, sort
, stable_partition
, stable_sort
, unique
.exclusive_scan
, inclusive_scan
, transform_exclusive_scan
, transform_inclusive_scan
shall be DefaultConstructible. A default constructed-instance of the initial value type shall be the identity element for the specified binary operation.max_element
, min_element
, minmax_element
, partial_sort
, partial_sort_copy
, sort
, stable_sort
the dereferenced value type of the provided iterators shall be DefaultConstructible.remove
, remove_if
, unique
the dereferenced value type of the provided iterators shall be MoveConstructible.copy_if
, inplace_merge
, partial_sort
, partial_sort_copy
, partition_copy
, remove
, remove_if
, rotate
, sort
, stable_sort
, unique
, unique_copy
.