1 votes 1 votes TRUE OR FALSE CO and Architecture cache-memory + – Sourabh Kumar asked Jun 25, 2015 Sourabh Kumar 882 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 5 votes 5 votes true The first access to a block is never in the cache. Also called cold start misses or first reference misses. and this type of misses is called Compulsory misses . (Misses in even an Infinite Cache) But here we increasing the block size then more adjacent words will be fetched on each miss, so references to these words will not cause compulsory misses ( which can be reduced to 1 ) . REF : http://courses.cs.washington.edu/courses/cse378/02sp/sections/section9-2.html Pranay Datta 1 answered Jun 25, 2015 • selected Aug 21, 2015 by Pooja Palod Pranay Datta 1 comment Share Follow See all 3 Comments See all 3 3 Comments reply Arjun commented Jun 26, 2015 reply Follow Share Given in the link above "Larger block sizes reduces compulsory misses (principle of spatial locality" Another reference: http://courses.cs.washington.edu/courses/cse378/02sp/sections/section9-2.html 3 votes 3 votes Pranay Datta 1 commented Jun 26, 2015 reply Follow Share cache block size means block size or cache size ? yes if block size is increased then it reduced compulsory misses (which can be reduced to 1 ). 1 votes 1 votes Arjun commented Jun 26, 2015 reply Follow Share Yes. block size means 'cache block' or 'cache line' size referring to the amount of data fetched to cache during a miss. 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes .by default the first reference is never present in the cache so there is no meaning that whether we increase or decrease the size of cache ..the first refernce will always be a miss....! focus _GATE answered Jun 25, 2015 focus _GATE comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Already answered here: - https://gateoverflow.in/11950/compulsory-problem-designer-increase-advantage-locality#c12032 Aarif Shaikh 1 answered May 20, 2017 Aarif Shaikh 1 comment Share Follow See all 0 reply Please log in or register to add a comment.