Hi Bill,
I am still using four Core 2 Duo E8500 CPU-computers (Q1 2008) on which
I run WSJT-X. They don't support AVX, of course.
They are old but since they have up until now been (barely/marginally)
OK in terms of speed and CPU utilization even with Windows 10 I haven't
replaced them before now. All each of them does is run an SDR program,
WSJT-X, and Dimension-4.
If WSJT-X added performance enhancements that would only work with a
newer CPU, that would probably push me to upgrade them. I had been
considering doing that anyway, as they have slowed enough with Windows
10 and each of its major updates that I suspect they won't be "OK" for
my purposes for much longer, as each major Windows update slows them
further.
So if I need to get new computers to get the most out of a future
version of WSJT-X, I will thank you for pushing me to do what I should
have already done by now. From my perspective, I would say don't spend
any time just to keep my ancient Core 2 Duos running with WSJT-X.
Getting 13 years out of a CPU/motherboard is plenty :)
Thanks for polling the group on this and for all that you do, and 73,
Roger
W3SZ
On 6/8/2021 07:38 PM, Bill Somerville 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) then let me
know.
73
Bill
G4WJS.
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