L1_INTRO_2010 - 234267 Lecturers LihuRappoport AdiYoaz Some...

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Computer Architecture 2010 – Introduction 1 MAMAS – Computer Architecture MAMAS – Computer Architecture 234267 234267 Lecturers:  Lihu Rappoport Adi Yoaz Some of the slides were taken from Avi Mendelson, Randi Katz, Patterson, Gabriel Loh
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Computer Architecture 2010 – Introduction 2 General Course Information General Course Information Grade 20% Exercise (mandatory)  ףקת 80% Final exam No midterm exam  Textbooks Computer Architecture a Quantitative Approach: Hennessy & Patterson Other course information  Course web site:    http://webcourse.cs.technion.ac.il/234267 Foils will be on the web several days before the class
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Computer Architecture 2010 – Introduction 3 Class Focus Class Focus CPU Introduction: performance, instruction set (RISC vs. CISC) Pipeline, hazards Branch prediction  Out-of-order execution Memory Hierarchy Cache Main memory Virtual Memory Advanced Topics PC Architecture Motherboard & chipset, DRAM, I/O, Disk, peripherals
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Computer Architecture 2010 – Introduction 4 Computer System Structure Computer System Structure CPU PCI North Bridge DDRII Channel 1 mouse LAN Lan Adap External Graphics Card Mem BUS CPU BUS Cache Sound Card speakers South Bridge PCI express ×16 IO Controller Hard Disk Parallel Port Serial Port Floppy Drive keybrd DDRII Channel 2 USB controller SATA controller PCI express ×1 Memory controller On-board Graphics DVD Drive
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Computer Architecture 2010 – Introduction 5 Architecture & Microarchitecture Architecture & Microarchitecture Architecture The processor features seen by the “user” Instruction set, addressing modes, data width, … Micro-architecture The way of implementation of a processor  Caches size and structure, number of execution units, … Timing is considered uArch (though it is user visible) Processors with different uArch can support the  same Architecture
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Computer Architecture 2010 – Introduction 6 Compatibility Compatibility Backward compatibility New hardware can run existing software Core2 Duo  can run SW written for Pentium 4, Pentium M,  Pentium  III, Pentium  II, Pentium , 486, 386, 268  Forward compatibility New software can run on existing hardware Example: new software written with SSE2TM runs on older  processor which does not support SSE2TM Commonly supports one or two generations behind Architecture independent SW JIT – just in time compiler: Java and .NET Binary translation
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Computer Architecture 2010 – Introduction 7 Performance Performance
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Computer Architecture 2010 – Introduction 8 Technology Trends and Performance Technology Trends and Performance Computing capacity: 4 ×  per 3 years  If we could keep all the transistors busy all the time
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