Warren,
I did say "In order to gauge how much backwards compatibility for older
CPUs we will have to implement it would help to know who is using such
older processors." Of course we would build in support for older
technologies.
73
Bill
G4WJS.
On 09/06/2021 01:02, halst...@gmail.com wrote:
Many people snag old tablet computers for portable use, so I am going
to conjecture that there are a good number that do not support AVX out
there.
Even the new(-ish) Surface Go 2 has a Pentium Gold processor without AVX.
(Note: Pentium and Celeron processors based off the Tiger Lake have
AVX2 and AVX-512 support).
Is there a way to build the support in and only make the AVX calls if
the software detects CPU compatibility?
Warren
KN6HXP
On Tue, Jun 8, 2021, 4:38 PM Bill Somerville <g4...@classdesign.com
<mailto:g4...@classdesign.com>> wrote:
Hi all WSJT-X users,
we are looking into some performance enhancements that will take
advantage of some parallel processing features of modern CPU
architectures. In order to gauge how much backwards compatibility for
older CPUs we will have to implement it would help to know who is
using
such older processors. Please don't turn this thread in to a mine is
better than yours conversation, all I need to know is who or how
many of
you are using the older CPU architectures. Note that this applies
to MS
Windows, Intel Linux, and Intel macOS users, it is about CPUs not
operating systems.
The technology we will use is called AVX and that is present on all
Intel CPUs branded Core i3/i5/i7/i9 (circa 2010 to present), it is
also
present on AMD CPUs since the Jaguar or Puma based CPU models
(some late
Athlon-II CPUs, all Zen based CPUs, including Ryzen) circa 2013 to
present.
Notably Intel CPUs branded Celeron, Pentium, or Atom do not
support the
AVX technology.
So in summary, look up your CPU and if it **does not support AVX**
(https://en.wikipedia.org/wiki/Advanced_Vector_Extensions
<https://en.wikipedia.org/wiki/Advanced_Vector_Extensions>) then
let me
know.
73
Bill
G4WJS.
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