P4L3 - Balancing Register Allocations Flashcards
1
Q
Simultaneous Multithreaded Context Switch
A
Inthisarchitecture,wetrytofilltheidlecyclesasmuchaspossible.Alsocalledhyper
threading.Twothreadsareexecutingsimultaneouslyononecore.
2
Q
Which type of context switch do network work processors utilize
A
Coarse Grained Multithreading
3
Q
When does a processor decide to context switch?
A
when long latency is executed.
Typically this is reads/loads or explicit context switch instructions
4
Q
Describe a traditional context switch register file.
A
Eachthreadisheldindividuallyintheregisterfile.Eachthreadisheldina disjointedsetfromtheotherthreads.
5
Q
What are the disadvantages of a traditional context switch shared register file
A
Theresultsofthisdesignis:
- Largerregisterfile
- Longerdatainputs
- Slowerclockcycle
