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- 1. Multiple Choice
Mark one ADVANTAGE and one DISADVANTAGE of STM (Software Transactional Memory, as opposed to Hardware Transactional Memory)
worse performance
better performance
can be used flexibly, without support from the hardware
more work for the programmer
- 2. Multiple Choice
What does the programmer have to pay attention to when using shared mutable state with reference-based STMs (e.g. scala-stm)?
variables must be volatile
special reference variables/objects must be used for the shared state
the program should not directly modify the shared state by itself
the programmer must remember to add accesses to the read/write set
when using `retry`, one must specify all variables for which updates should be detected
- 3. Multiple Choice
Atomic registers can be used to implement CAS
True
False
- 4. Multiple Choice
The following code is a correct consensus protocol for 2 threads
True
False
- 5. Multiple Choice
True
False
- 6. Multiple Choice
True
False
- 7. Multiple Choice
True
False
- 8. Multiple Choice
True
False
- 9. Fill in the Blank
Match the entries on the left with the MPI operations on the right. (Top to bottom, NO SPACES)
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