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localitymore about locality


  3  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Locality  \Lo*cal"i*ty\,  n.;  pl  {Localitiees}.  [L.  localitas: 
  cf  F.  localit['e].] 
  1.  The  state,  or  condition,  of  belonging  to  a  definite  place 
  or  of  being  contained  within  definite  limits. 
  It  is  thought  that  the  soul  and  angels  are  devoid  of 
  quantity  and  dimension,  and  that  they  have  nothing 
  to  do  with  grosser  locality.  --Glanvill. 
  From  WordNet  r  1.6  [wn]: 
  n  :  a  surrounding  or  nearby  region;  "the  plane  crashed  in  the 
  vicinty  of  Asheville";  "it  is  a  rugged  locality";  "he 
  always  blames  someone  else  in  the  immediate  neighborhood" 
  [syn:  {vicinity},  {neighborhood},  {neighbourhood}] 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
  1.  In  sequential  architectures  programs  tend  to  access  data 
  that  has  been  accessed  recently  (temporal  locality)  or  that  is 
  at  an  address  near  recently  referenced  data  (spatial 
  locality).  This  is  the  basis  for  the  speed-up  obtained  with  a 
  {cache}  memory. 
  2.  In  a  multi-processor  architecture  with  distributed  memory 
  it  takes  longer  to  access  the  memory  attached  to  a  different 
  processor.  This  overhead  increases  with  the  number  of 
  communicating  processors.  Thus  to  efficiently  employ  many 
  processors  on  a  problem  we  must  increase  the  proportion  of 
  references  which  are  to  local  memory. 

more about locality