Published 07/2022MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz, 2 ChGenre: eLearning | Language: English + srt | Duration: 35 lectures (2h 32m) | Size: 1.1 GB
Why do our computers have so many different types of memories
What is a cache
Why is a cache needed
What data should be kept in a cache
What are temporal and spatial locality
How do caches exploit temporal locality
How do caches exploit spatial locality
What is the classic LRU cache replacement policy
What are cache blocks Why use them
What is associativity in caches
What is a fully associative cache
What is a direct mapped cache
What is a set associative cache
How to detee whether a particular memory address will hit or miss in the cache
How the address breakdown works for accessing data stored in fully associative, direct mapped, and set-associative caches
How to modify data in caches
What is a write-through cache
What is a write-back cache
How dirty bits are used in a write-back cache
What other cache eviction algorithms, besides LRU, can be used
How are caches organized in a hierarchy in modern computers
No previous knowledge about caches or memory hierarchy needed. Everything you need to know about the topics will be covered.
In this course, we will b with an introduction to the memory hierarchy in modern computers. We will see why the computers employ several different types of memories, such as CPU registers, caches, main memory, hard disk, etc. After the introduction, the rest of the course focuses on caches. We will see that cache is a small but extremely fast piece of memory that sits between the fast CPU and slower RAM (main memory). The course is divided into the following nine sections: Introduction, Temporal locality, Performance implications of caches, Spatial locality, Writes in caches, Content addressable memory, Direct mapped caches, Set associative caches, Cache eviction, and hierarchical caches. The sections have several bite-sized lectures, practice problems, detailed animation examples illustrating concepts, and quizzes. Detailed solutions to the practice problems are included in the video and on the last page of the worksheets. Keys and explanations for the quiz questions are also provided. Specifically, the course will answer the following questions in detail.
1. Why do our computers have so many different types of memories
2. What is a cache
3. Why is a cache needed
4. What data should be kept in a cache
5. What are temporal and spatial locality
6. How do caches exploit temporal locality
7. How do caches exploit spatial locality
8. What is the classic LRU cache replacement policy
9. What are cache blocks Why use them
10. What is associativity in caches
11. What is a fully associative cache
12. What is a direct mapped cache
13. What is a set associative cache
14. How to detee whether a particular memory address will hit or miss in the cache
15. How the address breakdown works for accessing data stored in fully associative, direct mapped, and set-associative caches
16. How to modify data in caches
17. What is a write-through cache
18. What is a write-back cache
19. How dirty are bits used in a write-back cache
20. Can other cache eviction algorithms besides LRU be used
21. How are caches organized in a hierarchy in modern computers
Anyone interested in learning about caches in modern computers could benefit from this course.
Computer science undergraduate students taking a computer organization or computer architecture course could benefit from the course.
You may (optionally) wish to print some of the material
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