C952 Computer Architecture -
Parallelism via Instructions
Multiple Issue - correct answer ✔✔A scheme whereby multiple instructions are
launched in one clock cycle.
Static multiple issue - correct answer ✔✔An approach to implementing a multiple-
issue processor where many decisions are made by the compiler before execution
Dynamic multiple issue - correct answer ✔✔An approach to implementing a multiple
issue processor where many decisions are made during execution by the processor.
Issue slot - correct answer ✔✔The position from which instructions could issue in a
given clock cycle
Speculation - correct answer ✔✔An approach whereby the compiler or processor
guesses the outcome of an instruction to remove it as a dependence in executing
other instructions
Issue packet - correct answer ✔✔The set of instructions that issues together in one
clock cycle; the packet may be determined statically by the compiler or dynamically
by the processor.
Very Long Instruction Word (VLIW) - correct answer ✔✔A style of instruction set
architecture that launches many operations that are defined to be independent in a
single wide instruction, typically with many separate opcode fields.
Use latency - correct answer ✔✔Number of clock cycles between a load instruction
and an instruction that can use the result of the load without stalling the pipeline.
Loop unrolling - correct answer ✔✔A technique to get more performance from loops
that access arrays, in which multiple copies of the loop body are made and
instructions from different iterations are scheduled together.
