Caches take advantage of locality to speed up most data accesses. — Increasing the block size can take advantage of spatial locality. — Increasing cache associativity helps reduce the miss rate. Today we'll finish up with associativity and do two more things. — We'll try to quantify the benefits of different cache designs, and see how caches affect overall performance. — We'll also investigate some main memory organizations that can help increase memory system performance. Next Monday we'll introduce some of the issues involved with writing to caches, and talk about cache configurations in modern processors.
Correspondence Address: (57) ABSTRACT CARLSON, GASKEY & OLDS, P.C. 4OO WEST MAPLE ROAD SUTE 350 BIRMINGHAM, MI 48009 (US) Brushed DC electric motors have a rotor with commutator portions moving into and out of contact with brushes. As each of these contacts end, a back EMF force is induced into a main current Supply signal. The number of these periodic (73) Assignee: Masco Corporation forces can be counted and utilized to identify the position of (21) Appl. No.: 11/134,925 the component being rotated by the DC electric motor. This method is relatively insensitive to environmental changes, (22) Filed: May 23, 2005 and thus more accurate than the existing art.
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