Why Parallel Computers?

• Desire to solve bigger, more realistic applications problems.
• Fundamental limits are being approached.
• More cost effective solution

Example: Weather Prediction (Navier-Stokes)
with 3D Grid around the Earth

• 1 Kilometer Cells
• 10 slices cells
• each cell is 8 bytes, Bytes = 200 GBytes
• at each cell will perform 100 ops/cell
• 1 minute time step
•