What is VLIW in computer architecture?
Very long instruction word (VLIW) describes a computer processing architecture in which a language compiler or pre-processor breaks program instruction down into basic operations that can be performed by the processor in parallel (that is, at the same time).
Where is VLIW architecture used?
It can be used by a new programmer required. The program should keep track of Instruction scheduling. It can increased memory use. It is used for high power consumption.
What are the advantages of VLIW architecture?
Advantages : Reduces hardware complexity. Reduces power consumption because of reduction of hardware complexity. Since compiler takes care of data dependency check, decoding, instruction issues, it becomes a lot simpler.
Which approach do VLIW architecture follows?
The VLIW architecture follows _____ approach to achieve parallelism. Explanation: The MIMD stands for Multiple Instructions Multiple Data. Explanation: The above mentioned instruction is a complex 48 bit instruction used to perform operations on floating numbers.
Is VLIW CISC?
VLIW architectures are distinct from traditional RISC and CISC architectures implemented in current mass-market microprocessors. It is important to distinguish instruction-set architecture—the processor programming model—from implementation—the physical chip and its characteristics.
What are the features of superscalar architecture?
Superscalar architecture is a method of parallel computing used in many processors. In a superscalar computer, the central processing unit (CPU) manages multiple instruction pipelines to execute several instructions concurrently during a clock cycle.
What is the order of execution supported by VLIW architecture?
In VLIW the decision for the order of execution of the instructions depends on the program itself. Explanation: In other words, the order of execution of instructions has nothing to do with the physical hardware implementation of the system.
What is meant by superscalar architecture?
Which is an example of superscalar architecture?
Superscalar RISC processors emerged according to two different approaches. Some appeared as the result of transferring a current (scalar) RISC line into a superscalar one. Examples of this are the Intel 960, MC 88000, HP PA (Precision Architecture), SunSparc, MIPS R, and AMD Am29000 RISC lines.
What is difference between Epic and VLIW?
The EPIC architecture is based on VLIW, but was designed to overcome the key limitations of VLIW (in particular, hardware dependence) while simultaneously giving more flexibility to compiler writers.
Which of the following best describes superscalar design?
Which of the following best describes superscalar design? B. The processor predicts the next few instructions to be executed, and then determines the optimal order for the execution of these instructions.
What is epic microprocessor?
EPIC (Explicitly Parallel Instruction Computing) is a 64-bit microprocessor instruction set, jointly defined and designed by Hewlett Packard and Intel, that provides up to 128 general and floating point unit registers and uses speculative loading, predication, and explicit parallelism to accomplish its computing tasks.
How does superscalar architecture improve performance?
Advantages of Superscalar Architecture : This would enable the dispatch unit to keep both the integer and floating point units busy most of the time. In general, high performance is achieved if the compiler is able to arrange program instructions to take maximum advantage of the available hardware units.
What are the features of epic architecture?
EPIC provides many features for enabling the compiler to specify a high-quality Plan Of Execution (POE). These features include the ability to specify multiple operations per instruction, the notion of architecturally visible latencies, and an architecturally visible register structure.
What are the features of a VLIW architecture?
Features : The processors in this architecture have multiple functional units, fetch from the Instruction cache that have the Very Long Instruction Word. Multiple independent operations are grouped together in a single VLIW Instruction. They are initialized in the same clock cycle. Each operation is assigned an independent functional unit.
What is a VLIW instruction set?
VLIW stands for Very Large Instruction Word and is not an instruction set architecture, nor a performance metric. It is a design philosophy that some processor architectures (not MIPS) follow.
What is the best VLIW architecture for embedded applications?
Indeed, VLIW in the large is best embodied by Intel’s EPIC IA-64 architecture, which is more complex than the company’s sister 32-bit microprocessor families. We won’t focus on that, but trust me-it is. As for VLIW that can be better applied in emerging embedded applications, we have confronted several new types of processors.
What is the VLIW ISA?
It is a very regular ISA with a small number of instruction formats making it very easy to implement simple pipelined architectures for it. VLIW stands for Very Large Instruction Word and is not an instruction set architecture, nor a performance metric. It is a design philosophy that some processor architectures (not MIPS) follow.