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What (who) is instruction prefetch - definition
METHOD OF IMPROVING INSTRUCTION-LEVEL PARALLELISM
Instruction Prefetch Queue; Superpipelined; Deep pipelining; Pipelined CPU; Prefetch instruction queue; Superpipeline; Pipelined processor; Instruction pipeline
instruction prefetch
COMPUTER PROCESSING TECHNIQUE TO BOOST MEMORY
Instruction prefetch; Cache Prefetching
<architecture> A technique which attempts to minimise the time
a processor spends waiting for instructions to be fetched
from memory. Instructions following the one currently being
executed are loaded into a prefetch queue when the processor's
external bus is otherwise idle. If the processor executes a
branch instruction or receives an interrupt then the queue
must be flushed and reloaded from the new address.
Instruction prefetch is often combined with pipelining in
an attempt to keep the pipeline busy.
By 1995 most processors used prefetching, e.g. {Motorola
680x0}, Intel 80x86.
[First processors using prefetch? ]
(1998-03-29)
Cache prefetching
COMPUTER PROCESSING TECHNIQUE TO BOOST MEMORY
Instruction prefetch; Cache Prefetching
Cache prefetching is a technique used by computer processors to boost execution performance by fetching instructions or data from their original storage in slower memory to a faster local memory before it is actually needed (hence the term 'prefetch'). Most modern computer processors have fast and local cache memory in which prefetched data is held until it is required.
superpipelined
1. Traditional pipelined architectures have a single
pipeline stage for each of: instruction fetch, instruction
decode, memory read, ALU operation and memory write. A
superpipelined processor has a pipeline where each of
these logical steps may be subdivided into multiple pipeline
stages.
2. Marketese for pipelined.
Wikipedia
Instruction pipelining
In computer engineering, instruction pipelining is a technique for implementing instruction-level parallelism within a single processor. Pipelining attempts to keep every part of the processor busy with some instruction by dividing incoming instructions into a series of sequential steps (the eponymous "pipeline") performed by different processor units with different parts of instructions processed in parallel.
