Parallel schedules: results obtained by 1998

The following applications demonstrated the performance of CAP parallel schedules :

• 2D slice extraction of arbitrary direction out of a 3D volume (Visible Human data set, 13 GB) is available online. The Intranet version of this application running on a BiPentiumPro PC with 8 disks extracts one 800x800 slice in 2s. With 4 BiPentiumPro PCs with 30 disks, it extracts up to 5 slices per second, representing a combined disk throughput of 70MB/s. Performance when accessing data from disks or from memory is the same (8 disks-per-PC configuration) [5].
• CAP is the parallelization framework used in the Radiocontrol system which aims at measuring the radio audience ratings thanks to a correlation between reference recordings of radio station broadcasts and samples recorded by a sample group of listeners using special wristwatch recorders. CAP parallelization on 10 Pentium II 400MHz reduced the processing time from 266h to 26h for a correlation between 100 radio stations broadcasts during one day and a sample group consisting of 1000 people.
• 2-D topographic map navigation : 4 topographic maps scanned at 500 dpi, and representing 500MB of data. The browser performance is independent of the map size.
• 2-D image filtering for images stored on multiple disks (non-linear median filter). Disk accesses are completely hidden during processing [1].
• Linear algebra : Matrix multiplication : speed-up of 18.2 with 20 slave-processors. LU decomposition : speed-up of 8.5 with 10 slave-processors [4].