The document discusses different instruction set architectures including stack, accumulator, memory-memory, register-memory, and load-store architectures. It compares the pros and cons of each in terms of hardware requirements, parallelism, pipelining, and compiler optimization. Instruction formats are classified based on the number of operands and addresses. Code size and number of required memory accesses are compared for 4-address, 3-address, 2-address, 1-address, and 0-address instructions.
In these slides the registration organization and stack organization have discussed in detail. Stack organization is discussed with the aid of animation to let the user understand it in a better and easy way.
This document discusses instruction set architectures (ISAs). It covers four main types of ISAs: accumulator, stack, memory-memory, and register-based. It also discusses different addressing modes like immediate, direct, indirect, register-indirect, and relative addressing. The key details provided are:
1) Accumulator ISAs use a dedicated register (accumulator) to hold operands and results, while stack ISAs use an implicit last-in, first-out stack. Memory-memory ISAs can have 2-3 operands specified directly in memory.
2) Register-based ISAs can be either register-memory (like 80x86) or load-store (like MIPS), which fully separate
The document provides an overview of instruction sets, including:
1) Instruction formats contain operation codes, source/result operand references, and next instruction references. Operands can be located in memory, registers, or immediately within the instruction.
2) Types of operations include data transfer, arithmetic, logical, conversion, I/O, system control, and transfer of control.
3) Addressing modes specify how the target address is identified in the instruction, such as immediate, direct, indirect, register, register indirect, displacement, and stack addressing.
An instruction format specifies an operation code and operands. There are three main types of instruction formats: three address instructions specify memory addresses for two operands and one destination; two address instructions specify two memory locations or registers with the destination assumed to be the first operand; and one address instructions use a single accumulator register for all data manipulation. Addressing modes further specify how the address field of an instruction is interpreted to determine the effective address of an operand. Common addressing modes include immediate, register, register indirect, auto-increment/decrement, direct, indirect, relative, indexed, and base register addressing.
This chapter discusses instruction sets and addressing modes. It covers common addressing modes like immediate, direct, indirect, register, register indirect, displacement, and stack addressing. It provides examples and diagrams to illustrate each addressing mode. The chapter also discusses instruction formats for different architectures like PDP-8, PDP-10, PDP-11, VAX, x86, and ARM. It covers ARM's load/store multiple addressing and thumb instruction set. The chapter concludes with an overview of assemblers and a simple example program.
The document discusses various types of computer memory technologies, including RAM types like DRAM, SRAM, DDR, DDR2, and DDR3. It explains the memory hierarchy from registers to cache to main memory to disks. Key points covered include how DRAM works using capacitors that must be periodically refreshed, advantages of SDRAM over regular DRAM like pipelining commands. Generations of DDR memory are compared in terms of clock speeds, data rates, and other features.
The document discusses processors and their core functions. It explains that a processor is the central component of a computer that analyzes data, controls data flow, and manages core functions. It then describes the four main steps in a processor's work: fetch, decode, execute, and write back. The document also contrasts RISC (reduced instruction set computer) and CISC (complex instruction set computer) processors, noting key differences in their instruction sets, performance optimization approaches, decoding complexity, execution times, and common examples of each type.
In these slides the registration organization and stack organization have discussed in detail. Stack organization is discussed with the aid of animation to let the user understand it in a better and easy way.
This document discusses instruction set architectures (ISAs). It covers four main types of ISAs: accumulator, stack, memory-memory, and register-based. It also discusses different addressing modes like immediate, direct, indirect, register-indirect, and relative addressing. The key details provided are:
1) Accumulator ISAs use a dedicated register (accumulator) to hold operands and results, while stack ISAs use an implicit last-in, first-out stack. Memory-memory ISAs can have 2-3 operands specified directly in memory.
2) Register-based ISAs can be either register-memory (like 80x86) or load-store (like MIPS), which fully separate
The document provides an overview of instruction sets, including:
1) Instruction formats contain operation codes, source/result operand references, and next instruction references. Operands can be located in memory, registers, or immediately within the instruction.
2) Types of operations include data transfer, arithmetic, logical, conversion, I/O, system control, and transfer of control.
3) Addressing modes specify how the target address is identified in the instruction, such as immediate, direct, indirect, register, register indirect, displacement, and stack addressing.
An instruction format specifies an operation code and operands. There are three main types of instruction formats: three address instructions specify memory addresses for two operands and one destination; two address instructions specify two memory locations or registers with the destination assumed to be the first operand; and one address instructions use a single accumulator register for all data manipulation. Addressing modes further specify how the address field of an instruction is interpreted to determine the effective address of an operand. Common addressing modes include immediate, register, register indirect, auto-increment/decrement, direct, indirect, relative, indexed, and base register addressing.
This chapter discusses instruction sets and addressing modes. It covers common addressing modes like immediate, direct, indirect, register, register indirect, displacement, and stack addressing. It provides examples and diagrams to illustrate each addressing mode. The chapter also discusses instruction formats for different architectures like PDP-8, PDP-10, PDP-11, VAX, x86, and ARM. It covers ARM's load/store multiple addressing and thumb instruction set. The chapter concludes with an overview of assemblers and a simple example program.
The document discusses various types of computer memory technologies, including RAM types like DRAM, SRAM, DDR, DDR2, and DDR3. It explains the memory hierarchy from registers to cache to main memory to disks. Key points covered include how DRAM works using capacitors that must be periodically refreshed, advantages of SDRAM over regular DRAM like pipelining commands. Generations of DDR memory are compared in terms of clock speeds, data rates, and other features.
The document discusses processors and their core functions. It explains that a processor is the central component of a computer that analyzes data, controls data flow, and manages core functions. It then describes the four main steps in a processor's work: fetch, decode, execute, and write back. The document also contrasts RISC (reduced instruction set computer) and CISC (complex instruction set computer) processors, noting key differences in their instruction sets, performance optimization approaches, decoding complexity, execution times, and common examples of each type.
The document discusses direct memory access (DMA) and DMA controllers. It explains that DMA allows hardware subsystems like disk drives and graphics cards to access main memory independently of the CPU. This is useful because it allows data transfers to occur in parallel with other CPU operations, improving overall system performance. A DMA controller generates memory addresses and initiates read/write cycles. It has registers that specify the I/O port, transfer direction, and number of bytes to transfer per burst. DMA controllers use different transfer modes like burst, cycle stealing, and transparent to move blocks of data efficiently between peripheral devices and memory.
This document provides an overview of Booth's algorithm for multiplying signed and unsigned integers. It begins with an introduction and history, noting that the algorithm was invented by Andrew Donald Booth in 1950. It then explains the key points of Booth's algorithm through a flow chart and examples. For unsigned integers, it uses fewer additions/subtractions than other methods by conditionally adding or subtracting the multiplicand. For signed integers, it first converts them to unsigned using 2's complement before applying the same process.
An instruction code consists of an operation code and operand(s) that specify the operation to perform and data to use. Operation codes are binary codes that define operations like addition, subtraction, etc. Early computers stored programs and data in separate memory sections and used a single accumulator register. Modern computers have multiple registers for temporary storage and performing operations faster than using only memory. Computer instructions encode an operation code and operand fields to specify the basic operations to perform on data stored in registers or memory.
The document discusses the organization and operation of dynamic random access memory (DRAM). DRAM uses capacitors to store bits of data in memory cells that must be periodically refreshed. It describes how DRAM cells are arranged in a grid structure with rows and columns, and how row and column addresses are used to access individual cells. The document also explains techniques like fast page mode that allow for faster access to blocks of data within the same row without needing to reselect the row address.
The presentation given at MSBTE sponsored content updating program on 'PC Maintenance and Troubleshooting' for Diploma Engineering teachers of Maharashtra. Venue: Government Polytechnic, Nashik Date: 17/01/2011 Session-2: Computer Organization and Architecture.
I am working as a Assistant Professor in ITS, Ghaziabad. This is very useful to U.P.Technical University,Uttrakhand Technical University students. Give feedback to friendly_rakesh2003@yahoo.co.in
The document discusses instruction set architecture (ISA), which defines the interface between software and hardware. It describes ISA as specifying storage locations, operations, and how to invoke and access them. The document then compares ISA to human language and discusses program compilation. It outlines the basic instruction execution model of fetching, decoding, executing and writing instructions. The document also describes different types of instruction sets like stack, accumulator and register-set architectures. Finally, it contrasts complex instruction set computers (CISC) with reduced instruction set computers (RISC).
1) The document discusses different types of micro-operations including arithmetic, logic, shift, and register transfer micro-operations.
2) It provides examples of common arithmetic operations like addition, subtraction, increment, and decrement. It also describes logic operations like AND, OR, XOR, and complement.
3) Shift micro-operations include logical shifts, circular shifts, and arithmetic shifts which affect the serial input differently.
This slide provide the introduction to the computer , instruction formats and their execution, Common Bus System , Instruction Cycle, Hardwired Control Unit and I/O operation and handling of interrupt
This document discusses cache memory organization and characteristics. It begins by describing cache location, capacity, unit of transfer, access methods, and physical characteristics. It then covers the different mapping techniques used in caches, including direct mapping, set associative mapping, and fully associative mapping. The document also discusses cache performance factors like hit ratio, replacement algorithms, write policies, block size, and multilevel cache hierarchies. It provides examples of specific processor cache designs like those used in Intel Pentium processors.
The document discusses instruction set architecture (ISA), which is part of computer architecture related to programming. It defines the native data types, instructions, registers, addressing modes, and other low-level aspects of a computer's operation. Well-known ISAs include x86, ARM, MIPS, and RISC. A good ISA lasts through many implementations, supports a variety of uses, and provides convenient functions while permitting efficient implementation. Assembly language is used to program at the level of an ISA's registers, instructions, and execution order.
(Ref : Computer System Architecture by Morris Mano 3rd edition) : Microprogrammed Control unit, micro instructions, micro operations, symbolic and binary microprogram.
This document discusses the basic organization and design of computers. It covers topics such as architecture versus organization, functional units like the arithmetic logic unit and control unit, instruction formats, processor registers, stored program concepts, basic operational concepts like loading and storing data, memory access, and factors that impact performance such as pipelining and instruction set design. The document provides an overview of fundamental computer hardware components and operations.
There are situations, called hazards, that prevent the next instruction in the instruction stream from executing during its designated cycle
There are three classes of hazards
Structural hazard
Data hazard
Branch hazard
This document discusses different addressing modes used in the 8051 microcontroller architecture, including immediate, direct, register, and indirect addressing modes. Immediate addressing encodes the data as part of the instruction itself. Direct addressing retrieves data directly from another memory location. Register addressing uses register names as part of the opcode. Indirect addressing provides flexibility by allowing the contents of a register to specify the memory location of the operand.
This document discusses assembly language programming. It provides an overview of assembly language, how it relates to machine language, and how assemblers are used to convert assembly code into machine-readable object code. It also describes the basic components of assembly language instructions, including opcodes and operands, and different addressing modes for specifying operands in memory or registers. Common addressing modes like immediate, register, direct, register indirect, and based indexed modes are defined through examples.
This document discusses instruction set architectures (ISAs). It begins by explaining that an ISA serves as the interface between software and hardware, allowing software to tell the hardware what to do. It then covers various design issues for ISAs, such as where operands are stored, the number of operands, and supported operations. The document goes on to classify different ISA types including accumulator, stack, memory-memory, register-memory, and register-register (load-store). It provides examples and discusses the pros and cons of each approach. Finally, it covers additional ISA topics like operand addressing modes, RISC vs CISC architectures, and their distinguishing features.
05 instruction set design and architectureWaqar Jamil
This document summarizes key aspects of instruction set architecture (ISA) design. It discusses different classifications of ISAs such as accumulator, stack-based, memory-memory, register-memory, and load-store architectures. It also covers operand locations, types of addressing modes, operations, and evolution of instruction sets. The document concludes by previewing that the next topic will cover the MIPS instruction set as a case study.
The document discusses direct memory access (DMA) and DMA controllers. It explains that DMA allows hardware subsystems like disk drives and graphics cards to access main memory independently of the CPU. This is useful because it allows data transfers to occur in parallel with other CPU operations, improving overall system performance. A DMA controller generates memory addresses and initiates read/write cycles. It has registers that specify the I/O port, transfer direction, and number of bytes to transfer per burst. DMA controllers use different transfer modes like burst, cycle stealing, and transparent to move blocks of data efficiently between peripheral devices and memory.
This document provides an overview of Booth's algorithm for multiplying signed and unsigned integers. It begins with an introduction and history, noting that the algorithm was invented by Andrew Donald Booth in 1950. It then explains the key points of Booth's algorithm through a flow chart and examples. For unsigned integers, it uses fewer additions/subtractions than other methods by conditionally adding or subtracting the multiplicand. For signed integers, it first converts them to unsigned using 2's complement before applying the same process.
An instruction code consists of an operation code and operand(s) that specify the operation to perform and data to use. Operation codes are binary codes that define operations like addition, subtraction, etc. Early computers stored programs and data in separate memory sections and used a single accumulator register. Modern computers have multiple registers for temporary storage and performing operations faster than using only memory. Computer instructions encode an operation code and operand fields to specify the basic operations to perform on data stored in registers or memory.
The document discusses the organization and operation of dynamic random access memory (DRAM). DRAM uses capacitors to store bits of data in memory cells that must be periodically refreshed. It describes how DRAM cells are arranged in a grid structure with rows and columns, and how row and column addresses are used to access individual cells. The document also explains techniques like fast page mode that allow for faster access to blocks of data within the same row without needing to reselect the row address.
The presentation given at MSBTE sponsored content updating program on 'PC Maintenance and Troubleshooting' for Diploma Engineering teachers of Maharashtra. Venue: Government Polytechnic, Nashik Date: 17/01/2011 Session-2: Computer Organization and Architecture.
I am working as a Assistant Professor in ITS, Ghaziabad. This is very useful to U.P.Technical University,Uttrakhand Technical University students. Give feedback to friendly_rakesh2003@yahoo.co.in
The document discusses instruction set architecture (ISA), which defines the interface between software and hardware. It describes ISA as specifying storage locations, operations, and how to invoke and access them. The document then compares ISA to human language and discusses program compilation. It outlines the basic instruction execution model of fetching, decoding, executing and writing instructions. The document also describes different types of instruction sets like stack, accumulator and register-set architectures. Finally, it contrasts complex instruction set computers (CISC) with reduced instruction set computers (RISC).
1) The document discusses different types of micro-operations including arithmetic, logic, shift, and register transfer micro-operations.
2) It provides examples of common arithmetic operations like addition, subtraction, increment, and decrement. It also describes logic operations like AND, OR, XOR, and complement.
3) Shift micro-operations include logical shifts, circular shifts, and arithmetic shifts which affect the serial input differently.
This slide provide the introduction to the computer , instruction formats and their execution, Common Bus System , Instruction Cycle, Hardwired Control Unit and I/O operation and handling of interrupt
This document discusses cache memory organization and characteristics. It begins by describing cache location, capacity, unit of transfer, access methods, and physical characteristics. It then covers the different mapping techniques used in caches, including direct mapping, set associative mapping, and fully associative mapping. The document also discusses cache performance factors like hit ratio, replacement algorithms, write policies, block size, and multilevel cache hierarchies. It provides examples of specific processor cache designs like those used in Intel Pentium processors.
The document discusses instruction set architecture (ISA), which is part of computer architecture related to programming. It defines the native data types, instructions, registers, addressing modes, and other low-level aspects of a computer's operation. Well-known ISAs include x86, ARM, MIPS, and RISC. A good ISA lasts through many implementations, supports a variety of uses, and provides convenient functions while permitting efficient implementation. Assembly language is used to program at the level of an ISA's registers, instructions, and execution order.
(Ref : Computer System Architecture by Morris Mano 3rd edition) : Microprogrammed Control unit, micro instructions, micro operations, symbolic and binary microprogram.
This document discusses the basic organization and design of computers. It covers topics such as architecture versus organization, functional units like the arithmetic logic unit and control unit, instruction formats, processor registers, stored program concepts, basic operational concepts like loading and storing data, memory access, and factors that impact performance such as pipelining and instruction set design. The document provides an overview of fundamental computer hardware components and operations.
There are situations, called hazards, that prevent the next instruction in the instruction stream from executing during its designated cycle
There are three classes of hazards
Structural hazard
Data hazard
Branch hazard
This document discusses different addressing modes used in the 8051 microcontroller architecture, including immediate, direct, register, and indirect addressing modes. Immediate addressing encodes the data as part of the instruction itself. Direct addressing retrieves data directly from another memory location. Register addressing uses register names as part of the opcode. Indirect addressing provides flexibility by allowing the contents of a register to specify the memory location of the operand.
This document discusses assembly language programming. It provides an overview of assembly language, how it relates to machine language, and how assemblers are used to convert assembly code into machine-readable object code. It also describes the basic components of assembly language instructions, including opcodes and operands, and different addressing modes for specifying operands in memory or registers. Common addressing modes like immediate, register, direct, register indirect, and based indexed modes are defined through examples.
This document discusses instruction set architectures (ISAs). It begins by explaining that an ISA serves as the interface between software and hardware, allowing software to tell the hardware what to do. It then covers various design issues for ISAs, such as where operands are stored, the number of operands, and supported operations. The document goes on to classify different ISA types including accumulator, stack, memory-memory, register-memory, and register-register (load-store). It provides examples and discusses the pros and cons of each approach. Finally, it covers additional ISA topics like operand addressing modes, RISC vs CISC architectures, and their distinguishing features.
05 instruction set design and architectureWaqar Jamil
This document summarizes key aspects of instruction set architecture (ISA) design. It discusses different classifications of ISAs such as accumulator, stack-based, memory-memory, register-memory, and load-store architectures. It also covers operand locations, types of addressing modes, operations, and evolution of instruction sets. The document concludes by previewing that the next topic will cover the MIPS instruction set as a case study.
The document discusses computer architecture and the MIPS instruction set architecture. It begins by defining computer architecture as the instruction set architecture (ISA), which is the boundary between hardware and software and defines what a machine can do. It also discusses machine organization, which is how the hardware works to implement the ISA. The document then covers various aspects of the MIPS ISA, including its register-based load/store architecture, instruction formats, common operations like data movement and arithmetic, and addressing modes.
The document discusses the central processing unit and its components. It describes the general register organization and stack organization of a CPU. It discusses the instruction formats used in CPUs, including three address, two address, one address, zero address, and RISC instruction formats. It also covers addressing modes and data transfer and manipulation instructions used in CPUs.
The document discusses instruction set architecture and the MIPS architecture. It introduces key concepts like assembly language, registers, instructions, and how assembly code maps to high-level languages like C. Specific MIPS instructions for arithmetic like addition and subtraction are presented, showing how a single line of C code can require multiple assembly instructions. Register usage and conventions are also covered.
(246431835) instruction set principles (2) (1)Alveena Saleem
The document discusses instruction set architecture principles including what an instruction set is, how instructions are represented and classified, and different types of instruction sets. It covers topics like register-based machines, addressing modes, common instruction types, and how the instruction set affects compiler design and register allocation.
This document provides an overview of different processor architectures including RISC, accumulator, stack, and register-based architectures. It discusses the MIPS RISC architecture and why it is considered RISC. It then describes different processor examples like the 80x86 IA-32 architecture, the Pentium Pro, II, III, and IV, and the Java Virtual Machine stack-based architecture. It provides details on the complex IA-32 instruction set and addressing modes as well as performance enhancements in the Pentium series like out-of-order execution, deeper pipelining, caches, and hyperthreading.
The document discusses instruction sets and their characteristics. It covers topics like instruction formats, types of instructions, addressing modes, operand types, and byte ordering. Instruction sets have operation codes, operands, and addressing that reference locations in memory or registers. Design decisions for instruction sets include the operation repertoire, number of registers, and addressing modes.
This document discusses computer architecture and pipelining. It begins with defining the differences between computer organization and architecture. It then outlines the components needed for a MIPS processor implementation including registers, ALU, register file, memory units, and control signals. The document analyzes pipeline hazards such as data, structural, and control hazards. It also evaluates pipeline performance based on clock period, cycles per instruction, and interrupt frequency.
The document summarizes basic components of a computer system including the processor, memory, and I/O. It describes how the processor executes instructions in a fetch-decode-execute cycle and discusses different architectures for the number of addresses in instructions from 3-address to 0-address machines. It also covers memory organization, input/output, and other fundamental concepts.
Introduction to Processor Design and ARM ProcessorDarling Jemima
The document discusses computer architecture and the MU0 processor. It provides details on MU0's instruction set, which uses 1-address instructions and has a small set of instructions including LDA, STA, ADD, SUB, JMP, JGE, JNE, and STP. The document also explains MU0's design, which has a program counter, accumulator, instruction register, and arithmetic logic unit. It describes how MU0 executes sample instructions in a step-by-step fashion.
This document contains information about instruction sets and addressing modes from the textbook Computer Organization and Architecture by William Stallings.
It begins with a quiz on addressing modes, listing the different modes like immediate, direct, indirect, register, register indirect, displacement, stack, and asking what an effective address is. It then provides diagrams and explanations of each addressing mode.
The document next discusses instruction formats, explaining how bits are allocated in an instruction to determine aspects like addressing modes, operands, and register usage. It covers the trade-offs involved and concepts like orthogonality.
Finally, it specifically examines the x86 instruction format, showing the opcode and operand fields. It also explains what an assembler does to
The document discusses three sanitizers - AddressSanitizer, ThreadSanitizer, and MemorySanitizer - that detect bugs in C/C++ programs. AddressSanitizer detects memory errors like buffer overflows and use-after-frees. ThreadSanitizer finds data races between threads. MemorySanitizer identifies uses of uninitialized memory. The sanitizers work by instrumenting code at compile-time and providing a run-time library for error detection and reporting. They have found thousands of bugs in major software projects with reasonable overhead. Future work includes supporting more platforms and detecting additional classes of bugs.
Ch8_CENTRAL PROCESSING UNIT Registers ALURNShukla7
This document describes the central processing unit (CPU) of a computer. It discusses the major components of the CPU including registers, the arithmetic logic unit (ALU), control unit, and buses. It then covers various aspects of CPU organization such as register types, instruction formats, addressing modes, and common data transfer and manipulation instructions. Key aspects covered include general register organization, stack organization, one-address, two-address, and three-address instruction formats, and different addressing modes like direct, indirect, immediate, and relative addressing. It also discusses the processor status word which contains flag bits indicating the processor's state.
The document summarizes key points about the 8086 microprocessor architecture and assembly language programming. It discusses the 8086 architecture including its registers, data path, and parallel execution units. It also provides examples of assembly language programs using loops and addressing modes. Finally, it outlines the topics to be covered in the next class, including a summary of 8085/8086/i386 architectures and assembly programming basics, as well as an introduction to device interfacing.
This document discusses various aspects of computer organization including:
- The central processing unit and its major components like registers, arithmetic logic unit, control unit, and buses.
- Different CPU organizations like general register, stack, and their register file structure, instruction formats, and addressing modes.
- Data transfer and manipulation instructions, program control using techniques like subroutines and stacks.
- Details of reduced instruction set computers and how the control unit directs information flow through the ALU to perform operations.
The document discusses instruction sets and their components. It defines an instruction set as the list of instructions available for the CPU, which are encoded in binary machine language or assembly language mnemonics. Each instruction contains an operation code and may include source and destination operand references. Instruction formats can vary in the number of operands from zero to three addresses. Instruction length, encoding techniques, and types of instructions like data transfer, arithmetic, and control instructions are also covered.
This document discusses the differences between RISC and CISC instruction set architectures. RISC uses simple, fixed-length instructions that can execute in one cycle, while CISC uses more complex, variable-length instructions that may take multiple cycles. Key differences include RISC having fewer instructions, registers, and addressing modes compared to CISC, which aims to support high-level languages with a wider range of instructions. Branching, condition codes, and instruction formats are also covered.
Here are a few things you could try to address the increased executable size and performance impact on the CPU cache:
1. Recompile the executables to only use 64-bit pointers where needed, and use 32-bit pointers elsewhere to reduce the overall size.
2. Optimize the compiler to better pack instructions and data to improve cache utilization.
3. Consider using position independent code (PIC) to allow sharing of common code segments between processes to reduce duplicated code.
4. Profile the applications to identify hot spots and optimize those sections first, such as improving data locality.
5. Consider using link-time optimizations (LTO) to better optimize across compilation units.
6. Upgrade CPU/
Natural hazards such as earthquakes, tsunamis, hurricanes, and wildfires can endanger human lives and cause significant property damage. Proper hazard planning and mitigation efforts are crucial to reduce risks and increase community resilience. Early warning systems, building codes, land use policies, and public education are some of the measures that can help minimize hazards impacts.
Pipelining of Processors Computer ArchitectureHaris456
Pipelining is a technique used in microprocessors to overlap the execution of multiple instructions to increase throughput. It works by dividing the instruction execution process into discrete stages, such as fetch, decode, execute, memory, and write-back. When an instruction enters one stage, the previous instruction can enter the next stage, allowing the processor to complete more than one instruction per clock cycle. Pipelining reduces the time needed to complete a series of instructions by allowing the stages to process separate instructions simultaneously rather than sequentially.
The document discusses vector computers and their instruction sets. It begins by defining supercomputers and describing the CDC 6600, one of the earliest supercomputers. It then covers vector instruction sets, how vector instructions are executed in parallel across functional units and memory banks, and techniques like vector chaining and stripmining that improve performance. Overall, the document provides an overview of the design of vector computers and their vector processing capabilities.
Multithreading allows exploiting thread-level parallelism (TLP) to improve processor utilization. There are several categories of multithreading:
- Superscalar simultaneous multithreading interleaves instructions from multiple threads within a single out-of-order processor core to reduce idle resources.
- Coarse-grained multithreading switches between threads on long-latency events like cache misses to hide latency.
- Fine-grained multithreading interleaves threads at a finer instruction granularity in in-order cores.
- Multiprocessing physically separates threads onto multiple processor cores.
Graphics processing uni computer archiectureHaris456
This document discusses graphics processing units (GPUs) and their evolution from specialized hardware for graphics to general-purpose parallel processors. It covers key aspects of GPU architecture like their massively parallel threading model, SIMD execution, memory hierarchy, and how programming models like CUDA map computations to large numbers of threads grouped into blocks. Examples of GPU hardware like Nvidia's Fermi architecture are also summarized.
The document discusses computer memory hierarchy and cache organization. It begins by outlining the memory pyramid from fastest and smallest registers to largest but slowest hard disks. It then discusses cache organization including direct mapped, set associative and fully associative caches. The key points are:
Caches aim to bridge the speed gap between fast processors and slow main memory. Caches exploit temporal and spatial locality to reduce average memory access time. Caches are organized into blocks and sets to store recently accessed data from main memory.
This document discusses instruction-level parallelism techniques for improving CPU performance, including increasing clock rates, executing multiple instructions simultaneously, and using pipelines. It describes very long instruction word (VLIW) architectures that explicitly specify parallel instructions and superscalar processors that can dispatch multiple instructions per clock cycle to different execution units. It also covers different types of dependencies between instructions like data, control, and resource dependencies that limit instruction-level parallelism.
Natural hazards such as earthquakes, tsunamis, hurricanes, and wildfires can endanger human lives and cause significant property damage. Proper hazard planning and mitigation efforts are crucial to reduce risks and increase community resilience. Early warning systems, building codes, land use regulations, and public education campaigns help minimize hazards' impacts.
This document discusses different addressing modes used in computer architecture. It defines 10 addressing modes: immediate, register, register indirect, direct, indirect, implied, relative, indexed, base register, and autoincrement/autodecrement. Each addressing mode is described in terms of how the operand is specified and accessed from memory or registers. Examples are provided to illustrate each addressing mode.
This document discusses the evolution of computer architecture from semiconductor memory in the 1970s to recent processor trends. Key points covered include the development of microprocessors from the 4004 in 1971 to recent multi-core and many-integrated core processors. The document also discusses RISC architectures like ARM and benchmarks for evaluating system performance.
This document outlines a computer architecture course, including:
- The instructor's name and qualifications
- An overview of topics covered such as instruction set design, pipelining, memory hierarchy, and multiprocessors
- Recommended books and the marks distribution which includes sessions, midterm, and final exams
Hand Rolled Applicative User ValidationCode KataPhilip Schwarz
Could you use a simple piece of Scala validation code (granted, a very simplistic one too!) that you can rewrite, now and again, to refresh your basic understanding of Applicative operators <*>, <*, *>?
The goal is not to write perfect code showcasing validation, but rather, to provide a small, rough-and ready exercise to reinforce your muscle-memory.
Despite its grandiose-sounding title, this deck consists of just three slides showing the Scala 3 code to be rewritten whenever the details of the operators begin to fade away.
The code is my rough and ready translation of a Haskell user-validation program found in a book called Finding Success (and Failure) in Haskell - Fall in love with applicative functors.
Software Engineering, Software Consulting, Tech Lead, Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Transaction, Spring MVC, OpenShift Cloud Platform, Kafka, REST, SOAP, LLD & HLD.
Mobile App Development Company In Noida | Drona InfotechDrona Infotech
Looking for a reliable mobile app development company in Noida? Look no further than Drona Infotech. We specialize in creating customized apps for your business needs.
Visit Us For : https://www.dronainfotech.com/mobile-application-development/
When deliberating between CodeIgniter vs CakePHP for web development, consider their respective strengths and your project requirements. CodeIgniter, known for its simplicity and speed, offers a lightweight framework ideal for rapid development of small to medium-sized projects. It's praised for its straightforward configuration and extensive documentation, making it beginner-friendly. Conversely, CakePHP provides a more structured approach with built-in features like scaffolding, authentication, and ORM. It suits larger projects requiring robust security and scalability. Ultimately, the choice hinges on your project's scale, complexity, and your team's familiarity with the frameworks.
Neo4j - Product Vision and Knowledge Graphs - GraphSummit ParisNeo4j
Dr. Jesús Barrasa, Head of Solutions Architecture for EMEA, Neo4j
Découvrez les dernières innovations de Neo4j, et notamment les dernières intégrations cloud et les améliorations produits qui font de Neo4j un choix essentiel pour les développeurs qui créent des applications avec des données interconnectées et de l’IA générative.
Utilocate offers a comprehensive solution for locate ticket management by automating and streamlining the entire process. By integrating with Geospatial Information Systems (GIS), it provides accurate mapping and visualization of utility locations, enhancing decision-making and reducing the risk of errors. The system's advanced data analytics tools help identify trends, predict potential issues, and optimize resource allocation, making the locate ticket management process smarter and more efficient. Additionally, automated ticket management ensures consistency and reduces human error, while real-time notifications keep all relevant personnel informed and ready to respond promptly.
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No one wants their application to drag like a car stuck in the slow lane! Yet it’s all too common to encounter bumpy, pothole-filled solutions that slow the speed of any application. Symfony apps are not an exception.
In this talk, I will take you for a spin around the performance racetrack. We’ll explore common pitfalls - those hidden potholes on your application that can cause unexpected slowdowns. Learn how to spot these performance bumps early, and more importantly, how to navigate around them to keep your application running at top speed.
We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
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E-commerce Application Development Company.pdfHornet Dynamics
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A Study of Variable-Role-based Feature Enrichment in Neural Models of CodeAftab Hussain
Understanding variable roles in code has been found to be helpful by students
in learning programming -- could variable roles help deep neural models in
performing coding tasks? We do an exploratory study.
- These are slides of the talk given at InteNSE'23: The 1st International Workshop on Interpretability and Robustness in Neural Software Engineering, co-located with the 45th International Conference on Software Engineering, ICSE 2023, Melbourne Australia
2. Instruction Set Architecture (ISA)
Memory addressing, instructions, data types, memory architecture, interrupts,
exception handling, external I/O
3. + Instruction Set Architecture (ISA)
• Serves as an interface between software and
hardware.
• Provides a mechanism by which the software tells
the hardware what should be done.
instruction set
High level language code : C, C++, Java, Fortran,
hardware
Assembly language code: architecture specific statements
Machine language code: architecture specific bit patterns
software
compiler
assembler
4. +
Well know ISA’s
X86 (based on intel 8086 CPU in 1978, Intel family, also
followed by AMD)
ARM (32-bit & 64-Bit, initially Acorn RISC machine)
MIPS (32-bit & 64-bit by microprocessor without interlocked
pipeline stages)
SPARC( 32-bit & 64-bit by sun microsystem)
PIC (8-bit to 32-bit microchip)
Z80( 8-bit)
5. + Instruction Set Design Issues
Instruction set design issues include:
Where are operands stored?
registers, memory, stack, accumulator
How many explicit operands are there?
0, 1, 2, or 3
How is the operand location specified?
register, immediate, indirect, . . .
What type & size of operands are supported?
byte, int, float, double, string, vector. . .
What operations are supported?
add, sub, mul, move, compare . . .
6. + Classifying ISAs
Accumulator (before 1960):
1-address add A acc ¬ acc +
mem[A]
Stack (1960s to 1970s):
0-address add tos ¬ tos + next
Memory-Memory (1970s to 1980s):
2-address add A, B mem[A] ¬
mem[A] + mem[B]
3-address add A, B, C mem[A] ¬
mem[B] + mem[C]
7. +
Register-Memory (1970s to present, e.g. 80x86):
2-address add R1, A R1 ¬ R1 + mem[A]
load R1, A R1 ¬ mem[A]
Register-Register (Load/Store) (1960s to present, e.g. MIPS):
3-address add R1, R2, R3 R1 ¬ R2 + R3
load R1, R2 R1 ¬ mem[R2]
store R1, R2 mem[R1] ¬ R2
9. + Code Sequence C = A + B
for Four Instruction Sets
Stack Accumulator Register
(register-memory)
Register
(load-store)
Push A
Push B
Add
Pop C
Load A
Add B
Store C
Load R1, A
Add R1, B
Store C, R1
Load R1,A
Load R2, B
Add R3, R1, R2
Store C, R3
memory memory
acc = acc + mem[C] R1 = R1 + mem[C] R3 = R1 + R2
10. + Stack Architectures
Instruction set:
add, sub, mult, div, . . .
push A, pop A
Example: A*B - (A+C*B)
push A
push B
mul
push A
push C
push B
mul
add
sub
A B
A
A*B
A*B
A*B
A*B
A
A
C
A*B
A A*B
A C B B*C A+B*C result
11. + Stacks: Pros and Cons
– Pros
– Good code density (implicit top of stack)
– Low hardware requirements
– Easy to write a simpler compiler for stack
architectures
– Cons
– Stack becomes the bottleneck
– Little ability for parallelism or pipelining
– Data is not always at the top of stack when need, so
additional instructions like TOP and SWAP are needed
– Difficult to write an optimizing compiler for stack
architectures
12. Accumulator Architectures
Instruction set:
add A, sub A, mult A, div A, . . .
load A, store A
Example: A*B - (A+C*B)
load B
mul C
add A
store D
load A
mul B
sub D
B B*C A+B*C AA+B*C A*B result
acc = acc +,-,*,/ mem[A]
13. Accumulators: Pros and Cons
●
Pros
Very low hardware requirements
Easy to design and understand
●
Cons
Accumulator becomes the bottleneck
Little ability for parallelism or
pipelining
High memory traffic
14. Memory-Memory Architectures
• Instruction set:
(3 operands) add A, B, C sub A, B, C mul A, B, C
(2 operands) add A, B sub A, B mul A, B
• Example: A*B - (A+C*B)
– 3 operands 2 operands
– mul D, A, B mov D, A
– mul E, C, B mul D, B
– add E, A, E mov E, C
– sub E, D, E mul E, B
– add E, A
– sub E, D
15. Memory-Memory: Pros and
Cons
• Pros
– Requires fewer instructions (especially if 3 operands)
– Easy to write compilers for (especially if 3 operands)
• Cons
– Very high memory traffic (especially if 3 operands)
– Variable number of clocks per instruction
– With two operands, more data movements are required
16. Register-Memory Architectures
• Instruction set:
add R1, A sub R1, A mul R1, B
load R1, A store R1, A
• Example: A*B - (A+C*B)
load R1, A
mul R1, B /* A*B */
store R1, D
load R2, C
mul R2, B /* C*B */
add R2, A /* A + CB */
sub R2, D /* AB - (A + C*B) */
R1 = R1 +,-,*,/ mem[B]
17. Memory-Register: Pros and Cons
●
Pros
● Some data can be accessed without loading first
● Instruction format easy to encode
● Good code density
●
Cons
● Operands are not equivalent
● May limit number of registers
19. Load-Store: Pros and Cons
Pros
●
Simple, fixed length instruction encodings
●
Instructions take similar number of cycles
●
Relatively easy to pipeline and make superscalar
Cons
●
Higher instruction count
●
Not all instructions need three operands
●
Dependent on good compiler
21. +
Classification of instructions
(continued…)
The 4-address instruction specifies the two
source operands, the destination operand and
the address of the next instruction
op code source 2destination next addresssource 1
23. +Classification of instructions
(continued…)
A 2-address instruction overwrites one operand
with the result
One field serves two purposes
op code destination
source 1
source 2
• A 1-address instruction has a dedicated CPU register,
called the accumulator, to hold one operand & the
result –No address is needed to specify the
accumulator
op code source 2
24. +
Classification of instructions
(continued…)
A 0-address instruction uses a stack to hold
both operands and the result. Operations are
performed between the value on the top of the
stack TOS) and the second value on the stack
(SOS) and the result is stored on the TOS
op code
25. +
Comparison of
instruction formats
As an example assume:
that a single byte is used for the op code
the size of the memory address space is 16
Mbytes
a single addressable memory unit is a byte
Size of operands is 24 bits
Data bus size is 8 bits
26. +
Comparison of
instruction formats
We will use the following two
parameters to compare the five
instruction formats mentioned before
Code size
Has an effect on the storage requirements
Number of memory accesses
Has an effect on execution time
27. +
4-address instruction
Code size = 1+3+3+3+3 = 13 bytes
No of bytes accessed from memory
13 bytes for instruction fetch +
6 bytes for source operand fetch +
3 bytes for storing destination operand
Total = 22 bytes
op code source 2destination next addresssource 1
1 byte 3 bytes 3 bytes 3 bytes3 bytes
28. +
3-address instruction
Code size = 1+3+3+3 = 10 bytes
No of bytes accessed from memory
10 bytes for instruction fetch +
6 bytes for source operand fetch +
3 bytes for storing destination operand
Total = 19 bytes
1 byte 3 bytes 3 bytes3 bytes
op code source 2destination source 1
29. +
2-address instruction
Code size = 1+3+3 = 7 bytes
No of bytes accessed from memory
7 bytes for instruction fetch +
6 bytes for source operand fetch +
3 bytes for storing destination operand
Total = 16 bytes
op code destination
source 1
source 2
1 byte 3 bytes3 bytes
30. +
1-address instruction
Code size = 1+3= 4 bytes
No of bytes accessed from memory
4 bytes for instruction fetch +
3 bytes for source operand fetch +
0 bytes for storing destination operand
Total = 7 bytes
1 byte 3 bytes
op code source 2
31. +
0-address instruction
Code size = 1= 1 bytes
# of bytes accessed from memory
1 bytes for instruction fetch +
6 bytes for source operand fetch +
3 bytes for storing destination operand
Total = 10 bytes
1 byte
op code
33. +
Example 2.1 text
expression evaluation a = (b+c)*d
- e
3-Address 2-Address 1-Address 0-Address
add a, b, c
mpy a, a, d
sub a, a, e
load a, b
add a, c
mpy a, d
sub a, e
lda b
add c
mpy d
sub e
sta a
push b
push c
add
push d
mpy
push e
sub
pop a
Editor's Notes
&lt;number&gt;
&lt;number&gt;
An instruction set, or instruction set architecture (ISA), is the part of the computer architecture related to programming, including the native data types, instructions, registers, addressing modes, memory architecture, interrupt and exception handling, and external I/O. An ISA includes a specification of the set of opcodes (machine language), and the native commands implemented by a particular processor
Microprocessor without Interlocked Pipeline Stages
A stack is a group of registers organized as a last-in-first-out (LIFO) structure. In such a structure, the operands stored first, through the push operation, can only be accessed last, through a pop operation; the order of access to the operands is reverse of the storage operation. An analogy of the stack is a “plate-dispenser” found in several self-service cafeterias. Arithmetic and logic operations successively pick operands from the top-ofthe-stack (TOS), and push the results on the TOS at the end of the operation. In stack based machines, operand addresses need not be specified during the arithmetic or logical operations. Therefore, these machines are also called 0-address machines
Accumulator based machines use special registers called the accumulators to hold one source operand and also the result of the arithmetic or logic operations performed. Thus the accumulator registers collect (or „accumulate‟) data. Since the accumulator holds one of the operands, one more register may be required to hold the address of another operand. The accumulator is not used to hold an address. So accumulator based machines are also called 1-address machines. Accumulator machines employ a very small number of accumulator registers, generally only one. These machines were useful at the time when memory was quite expensive; as they used one register to hold the source operand as well as the result of the operation. However, now that the memory is relatively inexpensive, these are not considered very useful, a
&lt;number&gt;
&lt;number&gt;
4-address instructions are not very common because the next instruction to be executed is sequentially stored next to the current instruction in the memory. Therefore, specifying its address is redundant.
Used in encoding microinstructions in a micro-coded control unit (to be studied later)
&lt;number&gt;
The address of the next instruction is in the PC
&lt;number&gt;
As you can see, the size of the instruction reduces when the addresses reduce. The length of each field will be much smaller for CPU registers as compared to memory locations because there are a lot more memory locations compared to CPU registers
&lt;number&gt;
&lt;number&gt;
A single byte, or an 8-bit, op code can be used to encode up to 256 instructions.
A 16-Mbyte memory address space will require 24-bit memory addresses. We will assume a byte wide memory organization to make this example different from the example in the book.
The size of the address bus will be 24 bits and the size of the data bus will be 8-bits.
&lt;number&gt;
&lt;number&gt;
There is no need to fetch the operand corresponding to the next instruction since it has been brought into the CPU during instruction fetch.