Basic HTML version of Foils prepared 27 August 1997

Foil 38 Sequential Memory Structure

From CPS615-Introduction-Course,Driving Technology and HPCC Current Status and Futures CPS615 Basic Simulation Track for Computational Science -- Fall Semester 97. by Geoffrey C. Fox
Data locality implies CPU finds information it needs in cache which stores most recently accessed information
This means one reuses a given memory reference in many nearby computations e.g.
A1 = B*C
A2 = B*D + B*B
.... Reuses B
L3 Cache
Main
Memory
Disk
Increasing Memory
Capacity Decreasing
Memory Speed (factor of 100 difference between processor
and main memory
speed)

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