IBM Advanced Computer Systems project: Difference between revisions

Revision as of 07:53, 27 February 2007

Revision as of 11:48, 27 February 2007

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==History==

The ACS project began in 1961 as ''Project Y'' with a goal of &ldquo;building“building a machine that was one hundred times faster than [[IBM 7030 Stretch|Stretch]].&rdquo;”<ref name="smotherman">{{cite web | last = Smotherman | first = Mark | title = IBM ACS-1 Supercomputer | date = 31 May 2006 | url = http://www.cs.clemson.edu/~mark/acs.html | accessdate = 2007-02-27}}</ref> Initial work began at the [[Thomas J. Watson Research Center|IBM Watson Research Center]]. A number of significant computer pioneers contributed to the project, including [[John Cocke]], [[Herb Schorr]], [[Frances E. Allen|Frances Allen]], [[Gene Amdahl]], and [[Lynn Conway]].

A May 1968 decision by IBM to modify the project to support [[IBM System/360|S/360]] compatibility resulted in the name change from ''ACS-1'' to ''ACS-360'' for the computer being designed. At its peak, the ACS-360 project involved over 200 engineers and staff<ref name="smotherman"/>.

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* Hardware [[register renaming]]

* Instruction predication

* Branch prediction{{factFact|date=February 2007}}

* Level-sensitive Scan Design (used by IBM)

* Fixed-head hard disks