On 09/06/2021 09:37, Jim Brown wrote:
On 6/8/2021 4:38 PM, Bill Somerville wrote:
we are looking into some performance enhancements that will take
advantage of some parallel processing features of modern CPU
architectures.
Bill,
I have a half dozen Thinkpads of various vintages, most running i7
processors, two running i5s. At least half were purchased as refurbs
for less than $500. Machines like this are widely available in the
States, so that on this side of the pond, hardware should be no
limitation for any ham willing to spend a modest amount for a
computer. In the case of one machine (the one in my shack, about 5
years old purchased new), I needed to add some RAM.
I bought my current shack computer new 5-7 years ago, an i7 Thinkpad
with not enough RAM for $760. I've since added 8 GB and an SSD. It has
no problem with WSJT-X, nor with SO2R RTTY contesting -- two radios,
each with two RTTY decoders, logging software, and browsers, all
running simultaneously. A comparable machine could probably be bought
used for about $500.
I think the real obstacle is ignorance on the part of many hams as to
what's available at moderate cost. I would encourage your ongoing
development, along with an education campaign about hardware.
73, Jim K9YC
Jim,
it would be helpful if you take the time to review the CPU specs of each
of your machines that run WSJT-X (or MAP65) and determine if they
support the AVX instruction set. With MS Windows this can be done by
looking at the System panel (Windows+X then select System), find the CPU
model (it is in the middle of the page) and look it up on the
manufacture's web site. For example I might do an internet search for
"Intel Core i7-3630QM specs" and go to the ark.intel.com link at the top
of that search
https://ark.intel.com/content/www/us/en/ark/products/71459/intel-core-i7-3630qm-processor-6m-cache-up-to-3-40-ghz.html
. On that page under "Advanced Technologies" I find AVX, you may also
see AVX2 or even one of the AVX512 versions, all of those include AVX
support. Let me know if any of your WSJT-X PCs do not support AVX.
73
Bill
G4WJS.
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