Basic HTML version of Foils prepared February 13 00
| This will only depend on 3 parameters |
| n which is grain size -- amount of problem stored on each processor (bounded by local memory) |
| tfloat which is typical time to do one calculation on one node |
| tcomm which is typical time to communicate one word between two nodes |
| Most importance omission here is communication latency |
| Time to communicate = tlatency+ (Num Words)tcomm |
| Node A |
| Node B |
| tcomm |
| CPU tfloat |
| CPU tfloat |
| Memory n |
| Memory n |