Parallel Cache Management with Twofish Encryption Using GPU

Abstract

Only limited support is given to the resource management of graphics processing unit (GPU) by operating system in commodity software. Operating system manages the graphics processing unit as a peripheral device and restricts the use of graphics processing unit in various applications. GPUs are not only intended for graphics applications, but could also be used in applications that require high performance thereby giving more attention for its development in recent years. A desirable part of GPU memory is left unutilized in systems that are not used for GPGPU(general purpose GPU) computing. GPU memory of such systems can be viewed as disaggregated memory and by developing proper interfaces, it could be used as swap device or cache memory because of its low access latency to improve the operating systems performance. The proposed system manages GPU as buffer cache in operating systems and ensures security using Twofish encryption algorithm.