High-level Management of Communication Schedules in HPF-like Languages

The goal of High Performance Fortran (HPF) is to "address the problems of writing data parallel programs where the distribution of data affects performance", providing the user with a high-level language interface for programming scalable parallel architectures and delegating to the compiler the task of producing an explicitly parallel message-passing program. For some applications, this approach may result in dramatic performance losses. An important example is the inspector/executor paradigm, which HPF uses to support irregular data accesses in parallel loops. In many cases, the compiler does not have sufficient information to decide whether an inspector computation is redundant or needs to be repeated. In such cases, the performance of the whole program may be significantly degraded.

• Type: Conference
• Year: 1998
• Where: ICS
• Authors: Siegfried Benkner, Piyush Mehrotra, John Van Rosendale, Hans P. Zima
• Keywords: Data Parallel Programs, Distributed And Parallel Computing, ICS 1998, Parallel Message-passing Program, Scalable Parallel Architectures