文档介绍：AFIPS sp ring puter conference
V alidit y of the single pro cessor approac h to ac hieving large scale
computing capabilities
Gene M
Amdahl
IBM Sunn yv ale
California
INTR ODUCTION
F or o v er a decade prophets ha v e v oiced the con ten tion that anization of a puter
has reac hed its limits and that truly signi
can tadv ences can b e made only b yin terconnection of a
m ultiplicit y puters in suc h a manner as to p ermit co op erativ e solution
V ariously the prop er
direction has been poin ted out as general purp puters with a generalized in terconnection
of memories
or as sp puters with geometrically related memory in terconnections and
con trolled b y one or more instruction streams
Demonstration is made of the con tin ued v alidit y of the single pro cessor approac h and of the
w
eaknesses of the m ultiple pro cessor approac h in terms of application to real problems and their
attendan t irregularities
The argumen ts presen ted are based on statistical c haracteristics putation puters
o v er the last decade and up on the op erational requiremen ts within problems of ph ysical in terest
An additional reference will b e one of the most thorough analyses of relativ puter capabilities
curren tly published
Changes puter P erformance
D atamation
Septem b er
Professor
h F
Knigh t
Stanford Sc ho ol of Business Asmi