'Rotational latency' diaporamas de présentation

The Memory Hierarchy 15-213: Introduction to Computer Systems 9th Lecture, Sep. 21, 2010

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Project

Project. Create a DASH-compliant (Dynamic Adaptive Streaming over HTTP) streaming system. Goals (1). Capture a video on an ASUS Transformer tablet computer and store it as an MP4 file. Split the MP4 file into streamlets , i.e., 3 second long video files.

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Project

Project. Create a DASH-compliant (Dynamic Adaptive Streaming over HTTP) streaming system. Goals (1). Capture a video on an ASUS Transformer tablet computer and store it as an MP4 file. Split the MP4 file into streamlets , i.e., 3 second long video files.

659 views • 56 slides

Project

Project. Packetize MP3 audio into RTP Packets. Goals (1). Encode audio into streamable MP3 format according to RFC 2250 and RFC 5219. Use the Yima Personal Edition (Yima PE) streaming media server code, running under Linux .

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Project

Project. Stream H.264 (MPEG-4/AVC) via RTP. Goals (1). Encode video into streamable H.264 format. Modify the yimasplit utility, which creates data blocks containing pre-computed RTP packets with appropriate RTP headers. Use the Yima Personal Edition (Yima PE) streaming media server code.

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CIS 600 Advanced Computer Architecture Lecture 2 - Introduction

CIS 600 Advanced Computer Architecture Lecture 2 - Introduction. Timothy Arndt Computer and Information Science Cleveland State University. Review from last lecture. Computer Architecture >> instruction sets Computer Architecture skill sets are different

452 views • 45 slides

Project

Project. Stream H.264 (MPEG-4/AVC) via RTP. Goals (1). Encode video into streamable H.264 format. Modify the yimasplit utility, which creates data blocks containing pre-computed RTP packets with appropriate RTP headers. Use the Yima Personal Edition (Yima PE) streaming media server code.

450 views • 45 slides

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EECS 252 Graduate Computer Architecture Lec 2 - Introduction

EECS 252 Graduate Computer Architecture Lec 2 - Introduction. David Patterson Electrical Engineering and Computer Sciences University of California, Berkeley http://www.eecs.berkeley.edu/~pattrsn http://www-inst.eecs.berkeley.edu/~cs252. Review from last lecture.

439 views • 42 slides

CSE820 Lec 2 - Introduction

CSE820 Lec 2 - Introduction. Rich Enbody Based on slides by David Patterson. Review from last lecture. Computer Architecture >> instruction sets Computer Architecture skill sets are different 5 Quantitative principles of design Quantitative approach to design

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The Memory Hierarchy

The Memory Hierarchy. CS 105 Tour of the Black Holes of Computing. Topics Storage technologies and trends Locality of reference Caching in the memory hierarchy. Random-Access Memory (RAM). Key features RAM is packaged as a chip Basic storage unit is a cell (one bit per cell)

483 views • 39 slides

CS4432: Database Systems II

CS4432: Database Systems II. Data Storage (Better Block Organization). Big Question: What about access time?. block x in memory. I want block X. ?. Time = Disk Controller Processing Time + Disk Delay{seek & rotation} + Transfer Time. Access time, Graphically. P.

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CS 345: Topics in Data Warehousing

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Computer SCIENCE

Data Representation and Machine Concepts. Computer SCIENCE. Section 1.3. Instructor: Lin Chen. August 2013. 1 Data Storage. 1.3 Mass Storage. Magnetic Systems Optical Systems Flash Drives File Storage and Retrieval.

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Why Latency Lags Bandwidth, and What it Means to Computing

Why Latency Lags Bandwidth, and What it Means to Computing. David Patterson U.C. Berkeley patterson@cs.berkeley.edu October 2004. Preview: Latency Lags Bandwidth. Over last 20 to 25 years, for 4 disparate technologies, Latency Lags Bandwidth: Bandwidth Improved 120X to 2200X

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29 November

29 November. 4 to go! Questions? Interrupts and I/O devices. Interrupts. How does the CPU manage SLOW I/O devices? Programmed I/O Interrupt Driven I/O. Polling. Advantages Simple No surprises Processor in full control Disadvantages Polling can waste lots of time.

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CPE 731 Advanced Computer Architecture Technology Trends

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Disk Based Storage

Disk Based Storage. Define the terms track, sector, and seek as pertaining to a nonvolatile storage medium. Calculate the average rotational for a disk given disk performance criteria. Calculate the disk read time for a hard drive given performance characteristics for the disk.

267 views • 9 slides