>The vector new vector architecture looks interesting, but completely >different from the old vector architecture.
The IBM z13's ~139 SIMD instructions are different and new, yes. I expect that they represent a perfect functional superset of the long ago discontinued S/390 Vector Facility. However, it's probably not particularly useful to draw many parallels (!) with that older product. Yes, they are very different. As one example, every IBM z13 processor core incorporates the new SIMD instructions as a standard included feature. That's a much different, much lower latency design than the old, optional S/390 Vector Facility. If you have older code that was able to exploit the S/390 Vector Facility, I expect you could adapt it to exploit the new SIMD instructions. IBM's latest compilers can often help. However, you can do much, much more with the new instructions. Please see my other post about the IBM MASS and ATLAS libraries, for example. This IBM "redpiece" introduction is also a good, quick read: http://www.redbooks.ibm.com/redpapers/pdfs/redp5145.pdf -------------------------------------------------------------------------------------------------------- Timothy Sipples IT Architect Executive, Industry Solutions, IBM z Systems, AP/GCG/MEA E-Mail: [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
