Implementing OpenMP for Clusters on Top of MPI

• Published in: Lecture notes in computer science pp. 148 - 155
• Main Authors: Dorta, Antonio J., Badía, José M., Quintana, Enrique S., de Sande, Francisco
• Format: Book Chapter Conference Proceeding
• Language: English
• Published: Berlin, Heidelberg Springer Berlin Heidelberg 2005; Springer
• Series: Lecture Notes in Computer Science
• Subjects: Applied sciences; cluster computing; Computer science; control theory; systems; Computer systems and distributed systems. User interface; distributed memory; Exact sciences and technology; MPI; OpenMP; OpenMP compiler; Software; Multiprocessor; Distributed memory; Compiler; High performance; Communicating process; Message passing; Virtual machine; Message passing interface; Parallelism; Distributed system; Distributed computing; Shared memory
• ISBN: 9783540290094; 3540290095
• ISSN: 0302-9743; 1611-3349
• DOI: 10.1007/11557265_22

llc is a language designed to extend OpenMP to distributed memory systems. Work in progress on the implementation of a compiler that translates llc code and targets distributed memory platforms is presented. Our approach generates code for communications directly on top of MPI. We present computational results for two different benchmark applications on a PC-cluster platform. The results reflect similar performances for the llc compiled version and an ad-hoc MPI implementation, even for applications with fine-grain parallelism.