A High-Performance Collective Communication Library on Parallell and Distributed Systems

• Main Authors: Chou, Chi-Nan, 周吉男
• Other Authors: Jenq-Kuen Lee
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/92192385639865667375

碩士 === 國立清華大學 === 資訊科學學系 === 83 === Massively parallel and distributed memory machine can provide enormous computation power. However, the communication latency has limited the performance. This thesis describes an implementation of the high-performance communication library. The library is based on the theoretical rationale of C. Koelbel "Compiler-Time Generation of Regular Communication Patterns". This library is machine independent, and it can run on nCUBE/2, DEC Alpha farm workstations, and SUN workstations. It uses the nCUBE message passing library to passing the data in the nCUBE/2 machine, and it is based on the PVM environment in the workstations. This library supports the general users, FORTRAN compiler, and Parallel C++ compiler. It can reduce the complexity of compiler and enhance the performance. The current version has been incorporated into a Parallel C++ environment to support parallel I/O. There are some other functions in the library. They are the general functions like gather, scalar, shift, and the special functions like processor remapping, data moving in the arrays of the different dimensions, and out of the current configuration. Our collective communication work involving in processor remapping and out of current configuration issues an innovation in this area. It makes the system can work with an open environment where workstations are dynamically incorporated into the execution environment.