Testing the Mettle of an Origin2000

FFT Benchmarks

In early February, PECM staff member Sirpa Saarinen used the etime function to time a single call to FFT library functions. Her results, run on the NCSA 128-processor Origin2000 running IRIX 6.5.1 OS, are available graphically and in tabular format.

NAS Benchmarks

Earlier this year, Saarinen ran eight NAS parallel benchmarks on a dedicated 128-processor 250-MHz system (aegir.ncsa.uiuc.edu) running IRIX 6.5SE. This system is part of the NCSA Origin2000 array. Her evaluation of the NAS Version 2.3 benchmark suite using two different compiler options (FFLAGS = -O3 -64 -mips4 and CFLAGS = -O3 -64 -mips4) was posted in January and will be updated periodically.

Refer to the NAS Parallel Benchmark website for complete information about the benchmark suite.

NAG and SCSL Libraries

Saarinen also ran the Numerical Algorithms Group (NAG) SMP library (release 1) and the SCSL library (version 1.1) on a dedicated 128-processor, 250-MHz Origin 2000 system (aegir.ncsa.uiuc.edu). The OS for these runs was IRIX 6.5.1. Her comparisons of NAG vs SCSL performance of dgeqrf on various matrix sizes are presented graphically.