Experiences Using OpenMP Based on Compiler Directed Software DSM on a PC Cluster
نویسندگان
چکیده
In this work we report on our experiences running OpenMP programs on a commodity cluster of PCs running a software distributed shared memory (DSM) memory system. We compare the performance of message passing implementations of a subset of the NAS Parallel Benchmarks with their OpenMP counterpart and quantify the difference in performance in terms of remote and local memory access and synchronization time
منابع مشابه
Implementing an OpenMP Execution Environment on InfiniBand Clusters
Cluster systems interconnected via fast interconnection networks have been successfully applied to various research fields for parallel execution of large applications. Next to MPI, the conventional programming model, OpenMP is increasingly used for parallelizing sequential codes. Due to its easy programming interface and similar semantics with traditional programming languages, OpenMP is espec...
متن کاملOpenMP compiler for a Software Distributed Shared Memory System SCASH
In this paper, we present an implementation of OpenMP compiler for a page-based software distributed shared memory system, SCASH on a cluster of PCs. For programming distributed memory multiprocessors such as clusters of PC/WS and MPP, message passing is usually used. A message passing system requires programmers to explicitly code the communication and makes writing parallel programs cumbersom...
متن کاملDesign of OpenMP Compiler for an SMP Cluster
In this paper, we present a design of OpenMP compiler for an SMP cluster. Although clusters of SMPs are expected to be one of the cost-e ective parallel computing platforms, both of inter and intra node parallelism must be exploited to achieve high performance. These two levels of structure complicate parallel programming. The OpenMP is an emerging standard for parallel programming on shared-me...
متن کاملIntone — Tools and Environments for OpenMP on Clusters of SMPs1
Clusters of small-scale SMP computers are becoming more and more common as high-performance computing needs have arised, not only in national scientific laboratories, but also in enterprises of various kinds. An SMP-cluster represents a sweet-spot of cost-efficiency compared to a larger SMP system or to a cluster with smaller nodes. With the emergance of OpenMP, shared memory computing has also...
متن کاملCompiler optimization techniques for OpenMP programs
In this paper, we present some compiler optimization techniques for explicit parallel programs using OpenMP API. To enable optimizations across threads, we designed data ow analysis techniques in which interaction between threads is e ectively modeled. Structured description of parallelism and relaxed memory consistency in OpenMP make the analyses e ective and eÆcient. We show algorithms for re...
متن کامل