wsprd -C nnnn


Jim Lill
 

I vaguely recall Phil, KA9Q, commenting on the effects of higher values.  500 is the default, I know some are running 10000.  Do the odds of false decodes increase with those highers values?

73

Jim

WA2ZKD


Rob Robinett
 

Since I have 24 Xeon cores at KFS, I have been running -C1000 -o 4 there for weeks with no noticeable increase in false decodes.   

On Sat, Aug 6, 2022 at 6:12 AM Jim Lill <jim@...> wrote:

I vaguely recall Phil, KA9Q, commenting on the effects of higher
values.  500 is the default, I know some are running 10000.  Do the odds
of false decodes increase with those highers values?

73

Jim

WA2ZKD








--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


Jim Lill
 


I am running 5000 and not seeing false stuff that I notice


On 8/6/22 09:47, Rob Robinett wrote:

Since I have 24 Xeon cores at KFS, I have been running -C1000 -o 4 there for weeks with no noticeable increase in false decodes.   

On Sat, Aug 6, 2022 at 6:12 AM Jim Lill <jim@...> wrote:

I vaguely recall Phil, KA9Q, commenting on the effects of higher
values.  500 is the default, I know some are running 10000.  Do the odds
of false decodes increase with those highers values?

73

Jim

WA2ZKD








--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


KD2OM
 

I have changed all mine to C5000 -o 4 and seem to get less errors. On 160 I saw 0 out of 17 and 2TP had 4 out of 15, on MF I had 1 out of 5, 2TP had 3 out of 6.

I am going to reduce to C1000

Steve

On 8/6/22 14:07, Jim Lill wrote:


I am running 5000 and not seeing false stuff that I notice


On 8/6/22 09:47, Rob Robinett wrote:
Since I have 24 Xeon cores at KFS, I have been running -C1000 -o 4 there for weeks with no noticeable increase in false decodes.   

On Sat, Aug 6, 2022 at 6:12 AM Jim Lill <jim@...> wrote:

I vaguely recall Phil, KA9Q, commenting on the effects of higher
values.  500 is the default, I know some are running 10000.  Do the odds
of false decodes increase with those highers values?

73

Jim

WA2ZKD








--
Rob Robinett
AI6VN
mobile: +1 650 218 8896
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WA2TP - Tom
 

I see many false decodes at 10000.
However, does that outweigh the benefit of the number of legitimate deeper decodes? 

I think this would be very difficult to validate. As such, having plenty of available cpu, I will leave it at 10000.

KB9AMG monitors “uniques” and to an extent provides some reporting and date on spots that are of question.
Mark also assigns -# alongside the callsign after those spots in question are determined to be invalid to some extent.

On Aug 6, 2022, at 10:23 AM, KD2OM <steve@...> wrote:



I have changed all mine to C5000 -o 4 and seem to get less errors. On 160 I saw 0 out of 17 and 2TP had 4 out of 15, on MF I had 1 out of 5, 2TP had 3 out of 6.

I am going to reduce to C1000

Steve

On 8/6/22 14:07, Jim Lill wrote:


I am running 5000 and not seeing false stuff that I notice


On 8/6/22 09:47, Rob Robinett wrote:
Since I have 24 Xeon cores at KFS, I have been running -C1000 -o 4 there for weeks with no noticeable increase in false decodes.   

On Sat, Aug 6, 2022 at 6:12 AM Jim Lill <jim@...> wrote:

I vaguely recall Phil, KA9Q, commenting on the effects of higher
values.  500 is the default, I know some are running 10000.  Do the odds
of false decodes increase with those highers values?

73

Jim

WA2ZKD








--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


Gwyn Griffiths
 

In case an overview of how many decode cycles are actually used might be of interest I've put a histogram Dashboard
(pre-loaded for Tom)

http://logs1.wsprdaemon.org:3000/d/lxQIj3zVz/decode-cycles-histogram-ch?orgId=1&from=now-24h&to=now&var-rx_id=WA2TP&var-band_m=20&var-receiver=KIWI_7

log in with usual credentials  wdread and    JTWSPR2008

Enter your own rx_id and band top left and it'll populate the receiver pull down with the receivers you have active on that band during the time interval set top right.

You'll see that very few are into the thousands.

Gwyn G3ZIL


Jim Lill
 

where are the cycles recorded on a WD system?

On 8/7/22 09:09, Gwyn Griffiths via groups.io wrote:

In case an overview of how many decode cycles are actually used might be of interest I've put a histogram Dashboard
(pre-loaded for Tom)

http://logs1.wsprdaemon.org:3000/d/lxQIj3zVz/decode-cycles-histogram-ch?orgId=1&from=now-24h&to=now&var-rx_id=WA2TP&var-band_m=20&var-receiver=KIWI_7

log in with usual credentials  wdread and    JTWSPR2008

Enter your own rx_id and band top left and it'll populate the receiver pull down with the receivers you have active on that band during the time interval set top right.

You'll see that very few are into the thousands.

Gwyn G3ZIL


Andrew Cowan
 

Rob

Where about are these settings as you know I have increased the horsepower at UDL's so if there is any benefit
Great conditions at GM land at the moment.
Thanks 

Andrew


Rob Robinett
 

Add this line to your wd.conf file to change the relevant flags to wsprd:

WSPRD_CMD_FLAGS="-C 10000 -o 4 -d"

-C can vary from 0 to 10000, (wsjt-x default is 500) which permits wsprd to devote more cpu time to each bit
-o can vary from 0 to 5.     (wsjt-x default is 4). 5 takes up so much cpu time and gains so few spots that I don't run it anywhere..   -o = 3 or even 2 exponentially reduces cpu usage without a dramatic decrease in spot count.

WSPRD_CMD_FLAGS is read a the start of each wspr cycle, so you can dynamically change it without needing to restart WD


On Sun, Aug 7, 2022 at 7:23 AM Andrew Cowan <gm0udlandrew@...> wrote:
Rob

Where about are these settings as you know I have increased the horsepower at UDL's so if there is any benefit
Great conditions at GM land at the moment.
Thanks 

Andrew



--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


Gwyn Griffiths
 

Jim
 decode_cycles is one of the wsprd 'diagnostic' outputs that Rob makes available in the wsprdaemon_spots_s table.
Scroll down at http://wsprdaemon.org/wspr-field-names.html  for the list of "Variables available from wsprd ..."

The table can be accessed on the logs1.wsprdaemon.org server using any of the methods described in the Timescale guide at

http://wsprdaemon.org/ewExternalFiles/Timescale_wsprdaemon_database_queries_V2-2.pdf

Gwyn G3ZIL


Jim Lill
 

I am assuming that data must be local here on my machine at some point (?)

On 8/7/22 14:03, Gwyn Griffiths via groups.io wrote:

Jim
 decode_cycles is one of the wsprd 'diagnostic' outputs that Rob makes available in the wsprdaemon_spots_s table.
Scroll down at http://wsprdaemon.org/wspr-field-names.html  for the list of "Variables available from wsprd ..."

The table can be accessed on the logs1.wsprdaemon.org server using any of the methods described in the Timescale guide at

http://wsprdaemon.org/ewExternalFiles/Timescale_wsprdaemon_database_queries_V2-2.pdf

Gwyn G3ZIL


Rob Robinett
 

Look in the ALL_WSPR.TXT file maintained by each rx channel, e..g.:

wd_client@KFS-WD3:/dev/shm/wsprdaemon/recording.d/KIWI_Omni_A/20/W_120$ head  ALL_WSPR.TXT
220807 1730 -21  1.52  14.0970970  VE3SAO EN58 23          0  0.18  3  1    0  1  40     1   810
220807 1730 -12  0.11  14.0971016  KG5ZMG EM12 23          0  0.39  2  1    0  0  11     1   375
220807 1730   3  1.35  14.0971032  NK9G EN62 23           -1  0.56  1  1    0  0   3     1   550
220807 1730  -6  0.32  14.0971157  <KR6RG> DM13EM 23       0  0.51  1  1    0  0   3     1   589
220807 1730 -18  0.19  14.0971210  K0CFW EN34 23           0  0.28  2  1    0  0  40   688  -100
220807 1730  -5  0.11  14.0971216  KD6EKQ DM12 20          0  0.57  1  1    0  0   0     1   574
220807 1730 -21  0.02  14.0971298  VK3QN QF22 37           0  0.12  2  1   -8  1  35     1   810
220807 1730  -9  0.49  14.0971343  N0UDM DM78 23           0  0.56  1  1    0  0   1     1   628
220807 1730 -20  0.02  14.0971380  KB0LQJ DN40 20          0  0.16  2  1    0  1  34     1   810
220807 1730 -10  0.45  14.0971419  WE5Q DM81 23            0  0.38  1  1    0  0  17     3   228
wd_client@KFS-WD3:/dev/shm/wsprdaemon/recording.d/KIWI_Omni_A/20/W_120$


On Sun, Aug 7, 2022 at 11:19 AM Jim Lill <jim@...> wrote:

I am assuming that data must be local here on my machine at some point (?)

On 8/7/22 14:03, Gwyn Griffiths via groups.io wrote:
Jim
 decode_cycles is one of the wsprd 'diagnostic' outputs that Rob makes available in the wsprdaemon_spots_s table.
Scroll down at http://wsprdaemon.org/wspr-field-names.html  for the list of "Variables available from wsprd ..."

The table can be accessed on the logs1.wsprdaemon.org server using any of the methods described in the Timescale guide at

http://wsprdaemon.org/ewExternalFiles/Timescale_wsprdaemon_database_queries_V2-2.pdf

Gwyn G3ZIL



--
Rob Robinett
AI6VN
mobile: +1 650 218 8896


Gwyn Griffiths
 

While several of these fields are obvious, others may not be, so, for the record, they are:

date, time, SNR, time offset, frequency, tx_call, tx_loc, power, drift, sync_quality, ipass, blocksize, jitter, decode_type, nhardmin, decode_cycles, metric

See http://wsprdaemon.org/wspr-field-names.html  for definitions.
But note that for those stations that are decoding FST4W then Rob has repurposed the 'metric' field as spectral width in milliHz.

Gwyn G3ZIL