On 1/14/2019 11:18 AM, Farley, Peter x23353 wrote:
I also participate in ASSEMBLER-LIST and I don't remember such a discussion.
Can you pinpoint the approximate time period for that discussion?
My biggest complaint/concern with the vector instructions is the woeful lack of
any example code showing how to use them for just the kind of functions you
described. It's hard to imagine how to use such complex instructions without
at least some straight-forward examples.
I first mentioned using vector instructions in place of SRST in October
2016 in a thread entitled, "SRST Performance" with eight posts. The
group was debating which was faster, TRT or SRST. My comment was:
"SRST is much, much faster than TRT but still orders of magnitude slower
than the vector instructions."
to which you replied as you have here with a desire for good examples
from the PoOp owners. No one else seemed interested...
Later, in October of last year in another thread entitled, "Count
Words?" with nearly 50 posts, I once again recommended use of vector
instructions to solve the issue under discussion and that time was met
with serious push-back from some list participants (not you).
In the end, I smiled to myself content in the knowledge that I could
solve the problem with a vector-based routine that would run circles
around anything any of those "experts" could write using the alternative
techniques being suggested.
Of course, such a routine would normally be written using dual-path code
with fall back to Plan B if the vector instructions were not available.
So discussing the best implementation for Plan B wasn't time wasted...
--
Phoenix Software International
Edward E. Jaffe
831 Parkview Drive North
El Segundo, CA 90245
https://www.phoenixsoftware.com/
--------------------------------------------------------------------------------
This e-mail message, including any attachments, appended messages and the
information contained therein, is for the sole use of the intended
recipient(s). If you are not an intended recipient or have otherwise
received this email message in error, any use, dissemination, distribution,
review, storage or copying of this e-mail message and the information
contained therein is strictly prohibited. If you are not an intended
recipient, please contact the sender by reply e-mail and destroy all copies
of this email message and do not otherwise utilize or retain this email
message or any or all of the information contained therein. Although this
email message and any attachments or appended messages are believed to be
free of any virus or other defect that might affect any computer system into
which it is received and opened, it is the responsibility of the recipient
to ensure that it is virus free and no responsibility is accepted by the
sender for any loss or damage arising in any way from its opening or use.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
