| 1 | | 4) redundancy, validation, and credit |
| | 1 | = Validation, credit, and replication = |
| | 2 | |
| | 3 | A computational result consists of: |
| | 4 | |
| | 5 | * The result itself (the output files) |
| | 6 | * The amount of CPU time used; this may be used to determine how much credit to grant for the result. |
| | 7 | |
| | 8 | In general, neither of these can be trusted: |
| | 9 | |
| | 10 | * Some hosts have hardware problems (consistent or sporadic) that cause errors (usually in floating-point computation). |
| | 11 | * Some volunteers may maliciously return wrong results; they may even reverse-engineer your application, deciphering and defeating any sort of internal validation mechanism you might include in it. |
| | 12 | * Some volunteers may return correct results but falsify the CPU time. |
| | 13 | |
| | 14 | There are |
