What is a superscalar processor in advanced computer architecture?
A superscalar processor is a specific type of microprocessor that uses instruction-level parallelism to help to facilitate more than one instruction executed during a clock cycle. This depends on analysis of the instructions to be carried out and the use of multiple execution units to triage these instructions.
How do superscalar processors work?
In a superscalar computer, the central processing unit (CPU) manages multiple instruction pipelines to execute several instructions concurrently during a clock cycle. This is achieved by feeding the different pipelines through a number of execution units within the processor.
What is meant by superscalar?
S. A CPU architecture that allows more than one instruction to be executed in one clock cycle by using multiple execution units.
What is a superscalar processor What are the design characteristics?
A superscalar processor is a microprocessor design for exploiting multiple instructions in one clock cycle, thus establishing an instruction-level parallelism in processors. A superscalar is a super-pipelined model where only the independent instructions are executed sequentially, without any waiting state.
What are the key elements of a superscalar processor organization?
What are the key elements of a superscalar processor organization? Instructions on conditional branch Multiple stages of pipeline fetch, Pipeline decode and pipeline branch prediction logic is used by above points.
What is the most essential characteristics of a superscalar architecture?
Characteristics of superscalar approach to processor design: Common instructions such as load/store instructions are simultaneously initiated and execution is done independently. Processing in superscalar approach issues more than one instruction per cycle. Out-of-order execution is allowed by superscalar approach.
What is super-scalar processor?
A super-scalar processor is one that is capable of sustaining an instruction-execution rate of more than one instruction per clock cycle.Maintaining this execution rate is primarily a problem of scheduling processor resources (such as functional units) for highutilrzation.
What is a super-scalar RISC pipeline?
The design of the super-scalar pipeline closely parallels the design of a scalar RISC pipeline, to keep the execution rate of sequential instructions as high as their execution rate in a scalar processor. Table 2 shows the parallels between the pipeline of the sequential processor and the pipeline of the super-scalar processor.
What is the capacity of the Super-SCA-Lar processor pipeline?
The capacity of the super-sca- lar processor pipeline (in this example) is two instructions per cycle. One way to view an application is that it specifies a set of operations to be performed by processing resources.
Why does the super-scalar processor require an adder for each branch?
Since the super-scalar processor decodes more than one branch per cycle, computing potential branch target addresses for all decoded instructions would re- quire an adder per decoded instruction. 60 SpeduP Two-Instruction Decoder SpeeduP Four-Instruction Decoder bw h-mean high