Fortnet (3L) vl.0: Implementation and extensions of a message- passing harness for transputers using 3L parallel Fortran

Abstract
In previous work an occam-2 harness was developed which allowed parallel Fortran programs on a multicomputer to communicate using a simple message-passing subroutine library on a Meiko Computing Surface. The present work extends this harness to transputer arrays supporting the 3L Parallel Fortran, and further considers processor access of a shared filestore, and improvements to efficiency of communication. Destination buffering and direct access to the lowest-level 3L channels is found to be ...

Title of program: FORTNET (3L) V1.0
Catalogue Id: ACHQ_v1_0

Nature of problem
Parallel computers, such as transputer networks, with a high performance/cost ratio, are attractive for large scale computational tasks, such as Computational Fluid Dynamics. The large investment in sequential Fortran-77 code, in all branches of Science and Engineering, forces us to find an efficient means for porting existing codes to multiprocessors. Tools are limited: the Parallel Fortran v2.0 programming system for transputer networks has language extensions to facilitate message passing bet ...

Versions of this program held in the CPC repository in Mendeley Data
ACHQ_v1_0; FORTNET (3L) V1.0; 10.1016/0010-4655(92)90114-E

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

【摘要】
既往研究中，我们开发了一套奥卡姆-2（occam-2）运行框架，可在Meiko计算平台（Meiko Computing Surface）上，通过简易的消息传递子程序库，实现多计算机系统上并行Fortran程序的通信。本研究将该框架扩展至支持3L并行Fortran（3L Parallel Fortran）的传输处理器（transputer）阵列，并进一步探讨了处理器对共享文件存储的访问方式，以及通信效率的优化手段。研究发现，采用目标缓冲区与直接访问最低层级3L通道的方式能够……

程序名称：FORTNET (3L) V1.0
目录编号：ACHQ_v1_0

问题本质：
传输处理器（transputer）网络这类高性价比并行计算机，在计算流体动力学等大规模计算任务中极具应用价值。当前科学与工程各领域均已积累了大量串行Fortran-77代码，这促使我们亟需开发高效途径，将现有代码移植到多处理器系统中。当前可用工具十分有限：面向传输处理器网络的3L并行Fortran v2.0编程系统仅提供了语言扩展功能，以支持消息传递……

存放在Mendeley数据的CPC库中的该程序版本：ACHQ_v1_0；FORTNET (3L) V1.0；10.1016/0010-4655(92)90114-E

本程序源自贝尔法斯特女王大学托管的CPC程序库（1969-2019年）