上游充通大 ParisTech Computer SHANGHAI JIAO TONG UNIVERSITY INSTITUT DES SCIENCES ET TECHNOLOGIES Architecture PARIS INSTITUTE OF TECHNOLOGY Cache Memory Do you ever hear L1/L2/L3 Cache? Registers,Cache memory and Main memory Register is for immediately applicable data to the operation; Main memory is to hold data for near future; Cache Memory is a portion of high-speed memory located within the CPU itself,keeping a copy of main memory of current interest. Cache memory register Main memory register (on time) 9Cache Memory • Do you ever hear L1/L2/L3 Cache? • Registers, Cache memory and Main memory – Register is for immediately applicable data to the operation; – Main memory is to hold data for near future; – Cache Memory is a portion of high-speed memory located within the CPU itself, keeping a copy of main memory of current interest. • Cache memory  register < Main memory  register (on time) Computer Architecture 9