On 11/11/2020 1:17 PM, Dan Greiner wrote:
I was just informed that the document "The Enhanced-Sort Facility for
z/Architecture" (SA22-1082-00) is available for download. See
https://www-01.ibm.com/servers/resourcelink/lib03010.nsf/0/ADDD4A7958501EBD852585E3005679F7/$file/SA22-1082-00.pdf
(you will need an IBM ID for this site).
For those of you who may have stumbled over the complexities of the earlier
sorting assists (i.e., COMPARE AND FORM CODEWORD and UPDATE TREE), things just
got substantially more complicated!
I think just the opposite happened. Things just got much, Much, MUCH
simpler!
The CFC/UPT instruction solution was extraordinarily complex and
required a) an understanding of an arcane sort algorithm and b)
significant software coding to make it work.
By contrast, SORTL implements a trivially-easy insertion sort that
almost anyone can understand and nearly all the heavy lifting is done in
hardware. The software coding required to make it work is waaaay more
straightforward and mundane.
Of course, I'm the dude that got serious push-back on this list for
advocating the use of vector instructions. Who knows what they will
think of SORTL? LOL
--
Phoenix Software International
Edward E. Jaffe
831 Parkview Drive North
El Segundo, CA 90245
https://www.phoenixsoftware.com/
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