Function portability of molecular dynamics on heterogeneous parallel architectures with OpenCL

Experiences with Achieving Portability across Heterogeneous Architectures

The increasing computational needs of parallel applications inevitably require portability across popular parallel architectures, which are becoming heterogeneous. The lack of a common parallel framework results in divergent code bases, difficulty in porting, higher maintenance cost, and, thus difficulty achieving optimal performance on target architectures. Our paper examines two representativ...

Automatic OpenCL Task Adaptation for Heterogeneous Architectures

OpenCL defines a common parallel programming language for all devices, although writing tasks adapted to the devices, managing communication and load-balancing issues are left to the programmer. In this work, we propose a novel automatic compiler and runtime technique to execute single OpenCL kernels on heterogeneous multi-device architectures. The technique proposed is completely transparent t...

OpenCL Floating Point Software on Heterogeneous Architectures — Portable or Not?

OpenCL is an emerging platform for parallel computing that promises portability of applications across different architectures. This promise is seriously undermined, however, by the frequent use of floating-point arithmetic in scientific applications. Floating-point computations can yield vastly different results on different architectures — even IEEE 754-compliant ones —, potentially causing c...

Methods for Optimizing OpenCL Applications on Heterogeneous Multicore Architectures

Heterogeneous multicore architectures with CPU and add-on GPUs or streaming processors are now widely used in computer systems. These GPUs provide substantially more computation capability and memory bandwidth compared to traditional multi-cores. Also, because they are highly programmable, they provide the computational performance needed for realistic graphics rendering. Applications with gene...

Enhancing productivity and performance portability of OpenCL applications on heterogeneous systems using runtime optimizations