The Cilk++ concurrency platform

The availability of multicore processors across a wide range of computing platforms has created a strong demand for software frameworks that can harness these resources. This paper overviews the Cilk++ programming environment, which incorporates a compiler, a runtime system, and a race-detection tool. The Cilk++ runtime system guarantees to load-balance computations effectively. To cope with legacy codes containing global variables, Cilk++ provides a ldquohyperobjectrdquo library which allows races on nonlocal variables to be mitigated without lock contention or substantial code restructuring.