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> 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. > > > > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel >
_______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
