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Take a pad of paper.
Algorithm:
Initialize with the number of neighbors you have
- Compute average of your neighbor's values and subtract from your value.
Make that your new value.
- Repeat until done
Questions
1. How do you get values from your neighbors?
2. Which step or iteration do they correspond to? Do you know? Do you
care?
3. How do you decide when you are done?



Up: Background
Next: Hardware models
Previous: One-sided operations