Portable C++ Code that can Look and Feel Like Fortran Code with Yet Another Kernel Launcher (YAKL)

Abstract This paper introduces the Yet Another Kernel Launcher (YAKL) C++ portability library, which strives to enable user-level code with look and feel of Fortran code. The intended audience includes both developers unfamiliar C++. approach is briefly explained, YAKL’s main features are described, examples given that demonstrate usage. YAKL fills a niche capability important particularly scientific applications seeking port quickly portable library. places heavy emphasis on simplicity, readability, productivity performance mainly emphasizing Graphics Processing Units (GPUs). Central ability allow Fortran-like three features: (1) multi-dimensional Array class allows behavior; (2) limited library intrinsic functions; (3) an efficient pool allocator transparently enables cheap frequent allocations deallocations Arrays. While Fortran-style code, it also Arrays exhibit C-like behavior as well, including row-major index ordering lower bounds “0”. currently supports CPUs, CPU threading, Nvidia, AMD, Intel GPUs.