Results

Figures 9 and 10 show the finite-difference benchmark results for the four platforms. As in the previous tests there was little separating the MIPS-based quad processor SGI with the Intel Xeon-based quad processor Linux. The results appear to be similar to the larger split-step migration benchmark.

 

fdmig.par
Figure 9 Relative speed of the parallel portion of the finite-difference migration on the various testing platforms. 1 represents the SGI, Origin 200; 2 is the SGI 1400L ; 3 is the VA Start X MP; and 4 is the SGI Power Challenge. In each case the solid line represent actual performance, the dashed lines ideal performance.

 

fdmig.tot
Figure 10 Relative speed of the total execution time of the finite-difference migration on the various testing platforms. 1 represents the SGI, Origin 200; 2 is the SGI 1400L ; 3 is the VA Start X MP; and 4 is the SGI Power Challenge. In each case the solid line represent actual performance, the dashed lines ideal performance.