![]() ![]() Benchmark the result to ensure the parallel version is an improvement. ![]() Add one of the execution policies as the first parameter to the algorithm call to parallelize. ![]() If you aren’t already, #include to make the parallel execution policies available.(Execution policies are described below.) Verify that code you supply to the algorithm is safe to parallelize.Good candidates are algorithms which do more than O(n) work like sort, and show up as taking reasonable amounts of time when profiling your application. Find an algorithm call you wish to optimize with parallelism in your program.To use the parallel algorithms library, you can follow these steps: In particular, we test that it works with Clang/LLVM and the version of EDG that powers Intellisense. This means our implementation will work with any tool currently consuming our standard library, not just MSVC’s compiler. Our parallel algorithms implementation currently relies entirely on library support, not on special support from the compiler. In particular, the interface is intended to express parallelism in a general form that works for heterogeneous machines, allowing SIMD parallelism like that exposed by SSE, AVX, or NEON, vector “lanes” like that exposed in GPU programming models, and traditional threaded parallelism. The interface described in the standard for the parallel algorithms doesn’t say exactly how a given workload is to be parallelized. ![]() MSVC first added experimental support for some algorithms in 15.5, and the experimental tag was removed in 15.7. Today’s post is by Billy O’Neal.Ĭ++17 added support for parallel algorithms to the standard library, to help programs take advantage of parallel execution for improved performance. The questions can be about anything C++ related: MSVC toolset, the standard language and library, the C++ standards committee,, CppCon, etc. This post is part of a regular series of posts where the C++ product team here at Microsoft and other guests answer questions we have received from customers. ![]()
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