Testing Linux multiprocessors for seismic imaging

Biondo Biondi, Robert G. Clapp, and James Rickett

biondo@sep.stanford.edu

ABSTRACT

Benchmarks of our ``production'' codes show that Pentium-based multi-processors computers running the Linux operating system are attractive options for SEP's next computational server(s). A four-processor SGI 1400 L (500 Mhz Pentium III Xeon) has consistently performed as well as, or better than, our SGI Origin 200 (180 Mhz R10000). We used the Portland Group's pgf90 compiler to compile our benchmarking codes, that are parallelized with OpenMP directives. This compiler has proven to generate efficient code, though the support of some F90 and OpenMP features is still immature.