I'll stick with 'correlation', though I agree it certainly isn't 'equivalence'

Hypothesis:

Incompressible tapes may also be radar blanked (OK)
Compressible tapes are always reported to be blanked (possible bug or hardware failure)

may or may not be related, though one small thing I stumbled across in assembling up to date info, is a documented vulnerability to do with reading from files, whereby there could be issues upon missing EOF or other read failure... specifically in some seti@home code, that appears to be still there.
The Ultimate Question of Programming, Refactoring, and Every

Item #20 appears to be referring to current code at least in MB, specifically in the db folder, but I suspect may be used in AP and splitter code as well (not sure).

[Edit:] 'stuck tapes' comes to mind first, but it seems there are other possible side effects described.

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"Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions.

And remember that Astropulse was first written by a student programmer (OK, Josh was a PhD student at the time, but I don't think he was a student of programming). So elementary mistakes are always a possibility.

I'd go with your hypothesis Richard.

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

I compressed a quite a few AP tasks, would anyone want them to run offline?

The traditional "stuck bit" compressability makes sense, and the 100% blanked non-compressability also does. The "blanking" happens where there is radar, or other interference present, but data is still recorded there.

Before v7, these blanked areas were filled with pseudo-random data, since the jury was still out on whether pseudo-random was better, or if writing zeroes was. I remember Joe had done some tests with some data files where zeroes were overwritten to the blanked areas, and that introduced a few pulses to the final output, and it was never decided whether or not those pulses were authentically present, or if they only became detectable because of the hard boundaries of data and then digital silence.

Then v7 decided to forego processing the blanked areas of WUs (after extensive testing, of course) which means it doesn't really matter what gets put in those blanked regions now, as long as we know there are blanked regions--which I recalled recently how that works. (For more reference, I did some searching to find when this info was mentioned, and found Jun 02 2010 tech news post, which referenced May 04, 2010 scientific letter about radar blanking.)

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Linux laptop:
record uptime: 1511d 20h 19m (ended due to the power brick giving-up)

Have been getting some more APs....
The kitties hope they are not the little bite-sized ones.

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

Have been getting some more APs....
The kitties hope they are not the little bite-sized ones.

Mostly catnip, not kibble, I'm afraid ...

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Have been getting some more APs....
The kitties hope they are not the little bite-sized ones.

Mostly catnip, not kibble, I'm afraid ...

Oh, meowsigh.

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

The kitties are still slowly sniffing a few out.
One or two here and there. Have 123 onboard now, 8 rigs asking.
Have crunched a few. Couple had meat on them, but the rest pretty much went 'poof'.
Which frustrates the kitties......

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

Nothing so far on this lot, the last batch out of 33 just 9 had substance. The remainder were a smoke enema.......

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"Sour Grapes make a bitter Whine." <(0)>

That does not sound very uplifting.

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Ah, Dried Catnip ....

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66 between 3 boxes, mostly radar but 2 so far had substance.

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Got 17 from the latest batch..........100% NADA, NOTHING. ZILCH.

[edit] I take that back, but this is strange.

This job took 4sec to run, is 100% Radar Blanked and both I and 1 wingman received 400+ credit.........?????

https://setiathome.berkeley.edu/workunit.php?wuid=2301806458

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"Sour Grapes make a bitter Whine." <(0)>

In this last batch, my 3 machines got upwards of 250, but 3/4 or more were 100% blanked. Maybe as many as 90%. But some of those blankies got 4-500 credits because the SETI Gods have relented a bit.

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Because your wingman has yet to complete the required 11 "normal" APs to get their system properly calibrated. Both parties get the same credit, the lower of the two calculated, and normally when one client is not calibrated that is the one that is selected.

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Bob Smith
Member of Seti PIPPS (Pluto is a Planet Protest Society)
Somewhere in the (un)known Universe?

To add to the 'correlation':

Name						Size		Packed Size

ap_27no15ab_B2_P0_00197_20161021_05174.wu	8 392 048	8 250 520
ap_27no15ab_B4_P0_00256_20161022_08517.wu	8 392 049	8 173 070
ap_26no15ab_B6_P1_00143_20161021_00467.wu	8 392 046	8 157 098
ap_26no15ab_B4_P0_00390_20161021_06722.wu	8 392 046	8 144 967
ap_29ja16ab_B4_P1_00386_20161022_20839.wu	8 392 048	8 143 932
ap_26no15ab_B4_P1_00216_20161021_07988.wu	8 392 048	8 091 656
ap_27ja16ab_B4_P1_00046_20161021_18744.wu	8 392 046	8 053 604
ap_27ja16ab_B6_P1_00049_20161022_14654.wu	8 392 043	7 751 095
ap_29ja16ab_B1_P0_00184_20161021_28890.wu	8 392 047	7 199 112
ap_29ja16ab_B2_P1_00214_20161022_02854.wu	8 392 047	6 649 418


ap_29ja16ab_b1_p0_00184_20161021_28890.wu_1	00:00:05 (-), percent blanked: 100.000	
ap_26no15ab_b4_p1_00216_20161021_07988.wu_2	00:00:05 (00:00:01), percent blanked: 100.000	
ap_26no15ab_b4_p0_00390_20161021_06722.wu_1	00:00:05 (-), percent blanked: 100.000	
ap_27no15ab_b2_p0_00197_20161021_05174.wu_0	00:00:05 (-), percent blanked: 100.000	
ap_26no15ab_b6_p1_00143_20161021_00467.wu_0	00:00:05 (-), percent blanked: 100.000	
ap_27ja16ab_b4_p1_00046_20161021_18744.wu_0	00:00:05 (-), percent blanked: 100.000	
ap_27ja16ab_b6_p1_00049_20161022_14654.wu_0	00:00:05 (-), percent blanked: 100.000	
ap_29ja16ab_b2_p1_00214_20161022_02854.wu_1	00:00:05 (00:00:01), percent blanked: 100.000	
ap_27no15ab_b4_p0_00256_20161022_08517.wu_0	00:00:05 (00:00:01), percent blanked: 100.000	
ap_29ja16ab_b4_p1_00386_20161022_20839.wu_1	00:00:05 (-), percent blanked: 100.000	

One of them received a full Credit 469.26
http://setiathome.berkeley.edu/results.php?userid=8647488&offset=0&show_names=0&state=4&appid=20

I still keep all the WUs from the 3 batches, will you need any of them or can I delete them to free HDD space?

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- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

If you don't want to store the unit files on your computer, then you can store them on my Google Drive, that is available to everyone to view and download. I just need an email so I can allow uploads

Looks like we have one tape being splitted for AP tasks. That's great and all but I wish we could work through the backlog of AP tasks awaiting validation and db purging. I have some AP tasks that have been sitting awaiting validation with wingmen also awaiting validation for over a month. Strange thing is that newer AP tasks have finished up, been validated and purged already. Don't know why they are not being processed in FIFO order. I need two of my completed CPU tasks to get validated and registered as completed in the database to get my AP CPU APR calculated realistically on my newest computer.

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Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)