Effective Communication and File-I/O Bandwidth Benchmarks
We describe the design and MPI implementation of two benchmarks created to characterize the balanced system performance of high-performance clusters and supercomputers: b{_}eff, the communication-specific benchmark examines the parallel message passing performance of a system, and b{_}eff{_}io, which characterizes the effective 1/0 bandwidth. Both benchmarks have two goals: (a) to get a detailed insight into the Performance strengths and weaknesses of different parallel communication and I/O patterns, and based on this, (b) to obtain a single bandwidth number that characterizes the average performance of the system namely communication and 1/0 bandwidth. Both benchmarks use a time driven approach and loop over a variety of communication and access patterns to characterize a system in an automated fashion. Results of the two benchmarks are given for several systems including IBM SPs, Cray T3E, NEC SX-5, and Hitachi SR 8000. After a redesign of b{_}eff{_}io, I/O bandwidth results for several compute partition sizes are achieved in an appropriate time for rapid benchmarking.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15013314
- Report Number(s):
- UCRL-JC-143696; TRN: US200802%%1140
- Resource Relation:
- Conference: Euro Parallel Virtual Machine/Message Passing Interface 2001, Santorini Island, Greece, Sep 23 - Sep 26, 2001
- Country of Publication:
- United States
- Language:
- English
Similar Records
The effective I/O bandwidth benchmark (b{_}eff{_}io)
Optimizing noncontiguous accesses in MPI-IO.