An example of a MISD machine is referred to as a systolic array. A set of data processing components that are linked together in the form of a pipeline network or "wavefront" is referred to as a systolic array. Because the execution of each of these components is kicked off by the reception of data, each of these components is self-contained and does not need a program counter. Calculations are performed in "lock-step" by systolic arrays that have clocks that are synchronized, with each CPU executing alternate phases of computation and communication.

An example of a MISD machine is referred to as a systolic array. A set of data processing components that are linked together in the form of a pipeline network or "wavefront" is referred to as a systolic array. Because the execution of each of these components is kicked off by the reception of data, each of these components is self-contained and does not need a program counter. Calculations are performed in "lock-step" by systolic arrays that have clocks that are synchronized, with each CPU executing alternate phases of computation and communication.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Systolic arrays run MISD. Systolic arrays are wavefronts, or pipelined data processing networks. Data may start execution, hence these sections can operate independently of programme counters. To allow "lock-step" computing, systolic array CPUs with synchronized clocks alternate between computation and communication phases.
The outputs of four registers, A, B, C, D, H, L are connected through 8:1 line multiplexer to the input of a fifth register, X. Each register is 16 bits long. The required transfers are dictated by four timing variables, T0 through T3 as follows: T0 : X←A T1 : X←B T2 : X←C T3 : X←D The timing variables are mutually exclusive, which means that only one variable is equal to 1 at any given time, while the others are equal to 0. Draw a block diagram showing the hardware implementation of the register transfers. Include the connections necessary from the four timing variables to the selection inputs of the multiplexers and to the load input of register X.
Using a 5 stage pipeline architecture (IF-OF-EX-MEM-WB), show what stages are utilized by the instructions ADD, STORE, LOAD, and JUMP.
MISD machines are systolic arrays. Systolic arrays are "wavefronts" or pipeline networks of data processing parts. These parts are self-contained and don't need program counters since data initiates execution. In systolic arrays with synchronized clocks, the compute and communication phases are alternated by each CPU to calculate in "lock-step?
A systolic array, which is a kind of array, is an example of a MISD machine. A systolic array is a pipeline network or "wavefront" of data processing units structured as a network. Because execution is triggered by the reception of fresh data, none of these components need the usage of a program counter. Each unit in a clocked systolic array computes in "lock-step," with each unit completing alternate calculation and communication phases in a single clock cycle.
An example of a MISD machine might be something like a systolic array, which is a kind of array. A pipeline network or "wavefront" of data processing units that is organised as a network might be referred to as a systolic array. Since the receipt of new data is what initiates execution, none of these components need the employment of a program counter in order to function properly. Each individual unit in a timed systolic array computes in "lock-step," meaning that within the course of a single clock cycle, each individual unit finishes alternating stages of computation and communication.
A MISD machine is an example of a systolic array, a kind of array. Data processing units are organized into a "wavefront" in a systolic array. All of these components do not need the use of a program counter since execution is initiated when new data is received. Lock-step computation is achieved in a clocked-systolic array, where each unit completes its alternating calculation and communication phases in the same clock cycle.