OVERVIEW OF COMPUTER ARHITECTURE by Dr I S

OVERVIEW OF COMPUTER ARHITECTURE by Dr. I S SIVA RAO Associate Professor, Department of CSE GIET GUNUPUR INDIA

OVERVIEW OF COMPUTER ARHITECTURE 1. Evolution of computer system * parallelism in uni-processor system * parallel computer structure * Architectural classification scheme * Parallel processing application 2. RISC(Reduced Instruction Set Computer) 3. Memory management hardware 3. Flip-Flops 4. Serial Communication

What is Parallel Processing? Parallel processing is another method used to improve performance in a computer system, when a system processes two different instructions simultaneously, it is performing parallel processing

Topics Include • Parallelism in Uniprocessor Systems • Parallelism in Multiprocessor Systems – Flynn’s Classification – System Topologies – MIMD System Architectures

Categories of Flynn’s Classification • • SISD: Single instruction with single data SIMD: Single instruction with multiple data MISD: Multiple instruction with single data MIMD: Multiple instruction with multiple data

Examples of Topology (pattern of connections between processors) • • • Shared Bus Topology Ring Topology Tree Topology Mesh Topology Hypercube Topology Completely connected Topology

MIMD System Architectures The architecture of an MIMD system, as opposed to its topology, refers to its connections with respect to system memory. There are two types of architectures: Uniform memory access(UMA) Nonuniform memory access(NUMA)

PIPELINING AND VECTOR PROCESSING • Parallel Processing • Pipelining • Arithmetic Pipeline • Instruction Pipeline • RISC Pipeline • Vector Processing • Array Processors

Parallel Processing COMPUTER ARCHITECTURES FOR PARALLEL PROCESSING Von-Neuman based SISD Superscalar processors Superpipelined processors VLIW MISD Nonexistence SIMD Array processors Systolic arrays Dataflow Associative processors MIMD Reduction Shared-memory multiprocessors Bus based Crossbar switch based Multistage IN based Message-passing multicomputers Hypercube Mesh Reconfigurable

ASSESSMENT STRATEGY Ø Continuous Assessment: 1. 2. 3. 4. Unit Tests Class Tests/Quiz Presentations Assignments 10 marks 5 marks Ø End Semester Examination: 1. Written Examination 45 marks

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