Hello All,

All I can say is, the fast mode "is fast". 

Joe, Steve, Bill, etc are working on decoder refinement, but for me,
decoding 18+ stations each iteration is more than enough to contemplate. On
the fast mode, I just decoded a station at -21db. I think that's a record
for me on FT8.  -20db decodes are, just eyeballing it, plentiful. On
average, I'm seeing many -15 to -19 stations. For a fact QSO mode, I can't
see where one could ask for more.

73's
Greg, KI7MT

-----Original Message-----
From: Richard Lamont [mailto:rich...@lamont.me.uk] 
Sent: Tuesday, July 25, 2017 3:44 PM
To: wsjt-devel@lists.sourceforge.net
Subject: Re: [wsjt-devel] WSJT-X: review of message reply and sequencing
logic

On 25/07/17 22:09, Steven Franke wrote:
> Hi Richard,
> 
>> As Bill mentioned in his OP, the FT8 decoder is still a work in 
>> progress but I have noticed that the r7939/r7944 decoder is currently 
>> too slow to be usable on my machine, which uses a Core 2 Duo E6700 
>> CPU (2 x 2.66 GHz cores), even with nothing much else running. 
>> (Admittedly this machine is getting a bit long in the tooth, but this 
>> is the first time it's been a
>> problem.) The attached .wav takes about 2.5 seconds to decode. This 
>> is not an unusual example.
> 
> 
> There are three decoder depth settings. Have you tried the Fast and Normal
settings? The Fast setting should be quite a bit faster than the RC 1
decoder, and I believe that the Normal setting is comparable to RC 1. The
reason that we provide the Fast and Normal settings is to accommodate folks
who use slower machines. 

Thanks Steve and Bill for your prompt replies. This setting is one of the
features of WSJT-X that I tweaked when I first used it and had long since
forgotten about.

Is there a way to measure decode times accurately?

Just doing it by 'eye', I get these approximate figures )on the same .wav as
before):

1.8.0-rc1          fast/normal/deep   0.2s/0.5s/0.7s
1.8.0-rc2-r7924    fast/normal/deep   0.2s/0.5s/0.7s
1.7.1-devel-r7944  fast/normal/deep   0.4s/0.8s/2.5s


73,
Richard G4DYA



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