Timothy,
thanks for the pointer and the additional information.
Apart from personal interest, my primary focus is in creating support
for the new instructions in the z390 emulator for HLASM and runtime support.
As such I am more interested in the technicalities than in the broad
overview.
If you have any info or pointers at that level, I would much appreciate
that!
Kind regards,
Abe Kornelis
==========
Timothy Sipples schreef op 10-3-2015 om 7:43:
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]
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