Week 13

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Due: end of classes
- Tue, May 5, 11:59pm
- Marc's office
Logistics
- handout: paper copy of full assignment and problem descriptions
- submit electronically via submit377 script:
```
$ submit377 final my-final 
```
The S'mores Problem
- background clip from The Sandlot (S'mores scene): https://youtu.be/XlddDZkkxCc
- implement using Ruby/Rinda where processes coordinate using tuples as semaphores to make S'mores
The Water Molecule Problem
- chem background: Water molecule made up of two hydrogen atoms and one oxygen atom
- implement using Golang, represent atoms as goroutines that must coordinate to form a water molecule (also a goroutine)

this is ongoing research I've been doing with my RAs going back to before the pandemic
recall Legoland as implemented in Peter Welch's occam slides: PDF
implementing Legoland in golang presents a challenge: no PAR!
- demo without PAR
- demo with a PAR
  - and some lambdas…
demo of sort pump with PAR and Replicated PAR

Discussion: modeling one model of concurrency with another
- shared memory (critical sections, etc.)
- Golang: channels (message passing)
- Ruby/Rinda: Linda and Tuple Space
We don't always get to choose our language/library/stack

Final Assignment / Parallel Composition in Golang