Holders in Cilk Plus have left and right flavors. Similar left and right reduction operations exist in Threading Building Blocks (TBB).
面向英特尔® MIC 架构的编译器方法 高效并行化，借助英特尔® Cilk™ Plus 实现并行化
Apply the concepts of parallelism and distributed memory computing to your code to improve software performance. This paper expands on concepts discussed in Part 1, to consider parallelism, both vectorization (single instruction multiple data SIMD) as well as shared memory parallelism (threading), and distributed memory computing.