KNI

from The Free On-line Dictionary of Computing (8 July 2008)

Streaming SIMD Extensions
Katmai New Instructions
KNI
SSE

   <architecture> (SSE) {Intel Corporation}'s {floating point}
   {SIMD} extention of their {Pentium} {microprocessor}
   architecture.  SSE was formerly know as KNI (Katmai New
   Instructions).  It was introduced with the {Pentium III}.

   Intel Pentium III
   (http://developer.intel.com/design/pentiumiii/prodbref/).

   ipoem (http://ipoem.com/technology/Docs/pentium4.html).

   (2003-07-13)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

KNI
       Katmai New Instructions (Intel, ISSE, predecessor)