PAPM Quiz 1

Data Locality has 2 key perfomances

Temporal

Spatial

Temporary

Shared

What are 2 things that Coherency guarantees?

That a write will eventually be seen by other processors

All processors see writes to the same location in the same order

Reading an address should return the last value written to that address

Define the behavior of read and write accesses to a different memory location

What are the 3 definitions of coherent memory system (select 1)

In multithreading a thread can be

Suspended (save registers in memory)

Resumed (restore registers in memory)

Paused (save registers in memory

Over-written (restore registers in memory)

Multiple threads can execute independently

In parallel on multi CPus/Cores (physical concurrency)

Arbitrarily interleaved on a single CPU/core (logical concurrency)

In parallel on one CPU but multiple Cores (physical concurrency)

Unlock and Upgrade