| ??? 04/02/08 14:34 Read: times |
#152883 - clocks/instruction - some hairsplitting Responding to: ???'s previous message |
Maarten Brock said:
1 or 2 system clocks per instruction This is quite a bit of overstatement (or understatement? ;-) ) The SiLabs instruction set is 1-5 cycles per instruction. My "mini-benchmark" (which is biased towards the lowest number of cycles e.g. in case of conditional jumps) yielded something like 2.35 clocks per instruction. But this is roughly the same for all singleclockers. Maarten Brock said:
(1.8V * 0.4mA) / (1.25MHz / 1) = 576 pJ / instr. It would then be more fair to say 576 pJ/clock. JW |
| Topic | Author | Date |
| Low Power | 01/01/70 00:00 | |
| clocks/instruction - some hairsplitting | 01/01/70 00:00 | |
| not really 'quite' | 01/01/70 00:00 | |
| what the #$&* is "most"? | 01/01/70 00:00 | |
| critical code ... | 01/01/70 00:00 | |
| cache lock won't really help | 01/01/70 00:00 | |
| the issue is critical code | 01/01/70 00:00 | |
| a proper simulator would help | 01/01/70 00:00 | |
| In that case I doubt you will be able to buy ... | 01/01/70 00:00 | |
| This was not a "first" responder ... | 01/01/70 00:00 | |
| Challenger | 01/01/70 00:00 | |
| benchmark | 01/01/70 00:00 | |
| Experiment report: Dhrystone results | 01/01/70 00:00 | |
Nice work | 01/01/70 00:00 |