A Short Video Course on
Prof. Harry H. Porter III, Ph.D.
Portland State University
Last updated: November 18, 2015
These videos describes how cache memory works. The following concepts are defined and explained:
cache hit hit-rate v. miss rate
cache miss miss penalty
compulsory miss principle of locality
conflict miss working set
capacity miss stride-1 access
cache lines cache coherency
cache blocks valid and dirty bits
fully associative caches write-through v. write-back
directed-mapped caches write-allocate v. write-no-allocate
tag, index, and offset bits thrashing
The overall arrangement of L1, L2, and L3 caches in the Intel Core i7 is discussed.
These videos are intended for serious Computer Science students but assume no specific knowledge, beyond the general concepts of computer architecture.
Number of videos: 9
Total time: 143 minutes (2 hours, 23 minutes)
Average time per video: 16 minutes
Created: November 2015
You can watch the videos directly from the links below without any distractions. But if they don't work, try this link.
Introduction (13 mins)
Basic Concepts (12 mins)
Locality, Working Set, and Stride (25 mins)
Cache Lines, Cache Blocks, Cache Coherency (20 mins)
Associative Caches (14 mins)
Direct Mapped Caches (14 mins)
The General Approach (15 mins)
Cache Misses and Pathological Cases (15 mins)
Summary Review of Main of Concepts (15 mins)
Info about video formatting:
Produced on a Mac; MPEG-4; H.264; Millions; AAC; 2 channels; 32000 Hz; FPS: 23.98.
640 x 360; Data rate: about 350 kbit/s
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