Using the ALDY Load Distribution System for PVM Applications

Supporting Application Integrated Load Distribution for Message Passing Programs

Message passing libraries for parallel programming like PVM [SGDM94] and the emerging MPI standard [Wal94] are more and more used as programming environments for parallel applications in workstation clusters or distributed memory supercomputers. Simple usage of the programming environment, flexibility of the programming model, and efficiency of implementations are main aspects of the ongoing di...

Using Agents for Parallel Programming in Workstation Networks

Actual systems supporting dynamic load distribution for parallel programs such as Dynamo [3] manage load distribution by directing the assignment of newly generated subproblems to processes of the parallel program (non-preemptive load distribution). This so called task farming paradigm is only useful for a relatively small number of applications. Most numerical algorithms and simulation program...

The ALDY Load Distribution System

Mapping of coarse-grained applications onto workstation clusters

We present an environment for configuring and coordinating coarse grained parallel applications on workstation clusters. The environment named CoPA is based on PVM and allows an automatic distribution of functional modules as they occur in typical CAE-applications. By implementing link-based communication on top of PVM, CoPA is able to perform a “post-game” analysis of the communication load be...

Load Balancing for Network Based Multi-threaded Applications

In this paper we present Lbs, a load-management-system for network based concurrent computing. The system is built on Pt-Pvm, a library based on the PVM system. Pt-Pvm provides message passing and process management facilities at thread and process level for a cluster of workstations running the UNIX operating system. The presented system is realized as an open library which can be easily used ...