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extradoc / talk / fscons2012 / summary.txt

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- multicore machines, manycore machines

- focus on cases where using more cores is harder than making more processes


- using locks
- using stm/htm

- HTM: Haswell
- STM: read/write barriers, picture


- the deeper problem is: you have to use threads
- messy

- parallel with GC: common programming languages are either fully GC'ed or
  not at all

- what do you get if you run *everything* in STM/HTM?

- longer transactions, corresponding to larger parts of the program

- the thread model becomes implicit

- demo


- GIL/STM pictures
- can pretend it is one-core

- always gives correct results, but maybe too many conflicts

- "the right side" of the problem, in my opinion: debugging tools etc.
  (same as: GC is "the right side": no crashes, but you need occasionally
  to understand memory-not-freed problems)