Assessing MPI performance on QsNetIIt

Authors:
Pablo E. García;Juan Fernández;Fabrizio Petrini;José M. García
Affiliations:
Departamento de Ingeniería y Tecnología de Computadores, Universidad de Murcia, Murcia, Spain;Departamento de Ingeniería y Tecnología de Computadores, Universidad de Murcia, Murcia, Spain;CCS-3 Modeling, Algorithms & Informatics, Los Alamos National Laboratory, Los Alamos, NM;Departamento de Ingeniería y Tecnología de Computadores, Universidad de Murcia, Murcia, Spain
Venue:
PVM/MPI'05 Proceedings of the 12th European PVM/MPI users' group conference on Recent Advances in Parallel Virtual Machine and Message Passing Interface
Year:
2005

Citing 9
Cited 0

MPI: The Complete Reference

MPI: The Complete Reference
EMP: zero-copy OS-bypass NIC-driven gigabit ethernet message passing

Proceedings of the 2001 ACM/IEEE conference on Supercomputing
Myrinet: A Gigabit-per-Second Local Area Network

IEEE Micro
The Quadrics Network: High-Performance Clustering Technology

IEEE Micro
COMB: A Portable Benchmark Suite for Assessing MPI Overlap

CLUSTER '02 Proceedings of the IEEE International Conference on Cluster Computing
Improving the Scalability of Parallel Jobs by adding Parallel Awareness to the Operating System

Proceedings of the 2003 ACM/IEEE conference on Supercomputing
The Case of the Missing Supercomputer Performance: Achieving Optimal Performance on the 8,192 Processors of ASCI Q

Proceedings of the 2003 ACM/IEEE conference on Supercomputing
BCS-MPI: A New Approach in the System Software Design for Large-Scale Parallel Computers

Proceedings of the 2003 ACM/IEEE conference on Supercomputing
Scalable NIC-based Reduction on Large-scale Clusters

Proceedings of the 2003 ACM/IEEE conference on Supercomputing

Quantified Score

Hi-index	0.00

Visualization

Abstract

To evaluate the communication capabilities of clusters, we must take into account not only the interconnection network but also the system software. In this paper, we evaluate the communication capabilities of a cluster based on dual-Opteron SMP nodes interconnected with QsNetII. In particular, we study the raw network performance, the ability of MPI to overlap computation and communication, and the appropriateness of the local operating systems to support parallel processing. Experimental results show a stable system with a really efficient communication subsystem which is able to deliver 875 MB/s unidirectional bandwidth, 1.6 μsec unidirectional latency, and up to 99.5% CPU availability while communication is in progress.