Astropulse 4.34

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vonkorff
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Message 34139 - Posted: 7 Jul 2008, 23:17:54 UTC

We've released 4.34. The only major revision here is another check to search for this 0'd statefile error. If it encounters a 0'd statefile, and after 100 attempts over 10 minutes it cannot read the file, it should delete the statefile and the result file and start over. It should try this 3 times before giving up completely. In the process, it creates a file called zeroed_statefile_log.txt. The number in the file represents the number of times it has tried so far. (Don't change the number.)

Let me know if this happens to you ...

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Message 34150 - Posted: 9 Jul 2008, 21:02:53 UTC - in response to Message 34139.

We've released 4.34. The only major revision here is another check to search for this 0'd statefile error. ...

From svn log:
------------------------------------------------------------------------
r273 | korpela | 2008-07-07 19:54:13 +0200 (Mo, 07 Jul 2008) | 2 lines
Changed paths:
M /astropulse/client/ap_client_main.cpp
M /astropulse/client/ap_fold.cpp
M /astropulse/client/astropulse.h

Changed credit calculation to FLOP counting method.

------------------------------------------------------------------------

From applications page:
Linux/x86 4.34 7 Jul 2008 22:57:18 UTC
Windows/x86 4.34 7 Jul 2008 22:57:18 UTC
Linux/x86_64 4.34 7 Jul 2008 22:57:18 UTC


Question: Is FLOP counting active in v4.34 ?
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Josef W. Segur
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Message 34151 - Posted: 9 Jul 2008, 21:32:13 UTC - in response to Message 34150.

...
Question: Is FLOP counting active in v4.34 ?

By empirical test, yes it is. The <result> section in client_state.xml for an AP WU being processed by 4.34 has the <fpops_cumulative> field and the value grows as work is done.
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Message 34152 - Posted: 9 Jul 2008, 21:51:58 UTC - in response to Message 34151.

By empirical test, yes it is. The <result> section in client_state.xml for an AP WU being processed by 4.34 has the <fpops_cumulative> field and the value grows as work is done.

So, if we do not get the 0'd statefile error, we could at least check the FLOP counting results out. Good to know.
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Message 34154 - Posted: 9 Jul 2008, 22:46:50 UTC

You also want to note time to completion as there was an adjustment to bring DCF more into line.


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Message 34161 - Posted: 10 Jul 2008, 0:19:50 UTC - in response to Message 34154.

You also want to note time to completion as there was an adjustment to bring DCF more into line.

That would be a splitter code change, I'll be surprised if new AP work is made before the server problems settle out. The AP WU on my 10490 host was created in April, so of course has the old estimate.
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Message 34169 - Posted: 10 Jul 2008, 1:23:28 UTC - in response to Message 34161.

So I guess we wait to see how close Fpops are...

You also want to note time to completion as there was an adjustment to bring DCF more into line.

That would be a splitter code change, I'll be surprised if new AP work is made before the server problems settle out. The AP WU on my 10490 host was created in April, so of course has the old estimate.
Joe


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Message 34180 - Posted: 11 Jul 2008, 9:15:28 UTC

Just completed my first AP4.34 wu time taken 45:31:09 Validated okay.

After reporting this morning DCF is now down to 0.21945 this is due in part to running 6.02,

(4088916)

Two further wu running all have been from april.

BionclogX is giving completion times of 42:01:40 + 3:17:36 run time
BionclogX is giving completion times of 42:52:27 + 2:44:16 run time

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Message 34181 - Posted: 11 Jul 2008, 15:56:37 UTC

Hmm, the fpops based credit claim on 4088916 was 1869. That was about 41 credits per hour. On the same host with 6.02 work, the VLAR 63.98 credit units are running at about 25 credits per hour and the VHAR 19.11 credit units at about 31 credits per hour. That suggests the AP fpops may need to be scaled down before going to main.

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Message 34186 - Posted: 11 Jul 2008, 18:00:10 UTC

And if you take some MAR (0.533) into account that host used to have only 17 credits per hour with v6.02.
What distribution of AR do you think to choose here, Joe ?
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Message 34188 - Posted: 12 Jul 2008, 8:42:04 UTC
Last modified: 12 Jul 2008, 8:42:29 UTC

Finished my first APv4.34 wu successful.
DCF before: 0.431284
to completion: 56:05:00 hours
completed in: 59:09:02 hours
DCF after: 0.349533
<fpops_cumulative>1 614 850 000 000 000
claimed credit: 1869
validated ok
granted credit: 1258
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Message 34194 - Posted: 12 Jul 2008, 18:21:03 UTC - in response to Message 34181.

Eric stated, he attempted to do the the math with the same over payment as Seti Main.
"obvious reasoning?"

Hmm, the fpops based credit claim on 4088916 was 1869. That was about 41 credits per hour. On the same host with 6.02 work, the VLAR 63.98 credit units are running at about 25 credits per hour and the VHAR 19.11 credit units at about 31 credits per hour. That suggests the AP fpops may need to be scaled down before going to main.
Joe


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Message 34196 - Posted: 12 Jul 2008, 20:01:11 UTC - in response to Message 34194.

Hmm, the fpops based credit claim on 4088916 was 1869. That was about 41 credits per hour. On the same host with 6.02 work, the VLAR 63.98 credit units are running at about 25 credits per hour and the VHAR 19.11 credit units at about 31 credits per hour. That suggests the AP fpops may need to be scaled down before going to main.
Joe
Eric stated, he attempted to do the the math with the same over payment as Seti Main.
"obvious reasoning?"

Certainly, and it would be wrong to conclude on the basis of one host's results that the setting is too high. I was merely observing that for that particular host, stock AP was paying better than stock _enhanced.

I also don't know what proportion of the "over payment" on Seti main is due to hosts which run optimized there but are included in the comparison because they also do other projects. It could be that enthusiastic users tend to both go to the extra effort to install 3rd party optimized apps and are more likely to be participating in multiple projects.

Finally, I'll note that once 6.0x goes to main, it will be practical for the project to adjust the <credit_rate> parameter in its WUs to better match other projects. If that's going to be used, AP WUs would also need that feature.

==================

I can only guess what distribution of ARs can be expected for _enhanced work. My opinion is that there will be more Very High Angle Range work than we've seen in the past, simply because the GALFACTS project is becoming active and uses basketweave scanning. But even if half the WUs were VHAR, only about 20% of crunch time would be spent doing such work.

What I haven't yet figured out is if some of the AP FFA becomes ridiculous when the telescope is moving a beam width in 2 seconds or less.
Joe

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Message 34198 - Posted: 12 Jul 2008, 20:54:58 UTC

Hi Joe,

I take it from the Hmmm it was only a suggestion.

Just gone back over 1100 wu most 6.02 to the 29th june most of them match up with my wing hosts only a few came in at 19.12 knocked back to 19.11 I did how ever find a couple of computor errors which I'll dig out tomorrow as I'm off to the land of nod.

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Message 34203 - Posted: 13 Jul 2008, 12:44:21 UTC

Just completed two more AP4.34 wu’s both Validated okay.

After reporting these this morning DCF is now down to 0.260107.

(4089288)44:21:27 claimed 1869.04 granted 693.68

(4089287)44:19:14 claimed 1869.04 granted 1689.54

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Message 34205 - Posted: 13 Jul 2008, 16:33:19 UTC
Last modified: 13 Jul 2008, 16:37:24 UTC

Finished my first APv4.34 wu on linux successful.
DCF before: 0.811734
to completion: 106:13:03 hours
completed in: 95:15:16 hours
DCF after: 0.808313
<fpops_cumulative>1 614 850 000 000 000
claimed credit: 1869
validated ok
granted credit: 1269

One thing puzzles me here: why is the wu-time on x86_64 now 50% longer than with 4.33 ? Maybe this wu only ?
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Message 34209 - Posted: 14 Jul 2008, 8:57:48 UTC

Just completed last AP4.34 wu’s Validated okay. And last 6.02.


(4089287)100:52:31 1869.04 claimed 767.72 granted same claimed credits on this host (laptop T2080 1.73 GHz) as main host Q6600 2.40GHz.

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Message 34214 - Posted: 15 Jul 2008, 2:43:56 UTC
Last modified: 15 Jul 2008, 2:46:35 UTC

Well, well --

Looks like I've finally arrived at a nearly correct setting -- course, it took the download of 4.34 to do it (I guess), but Time to Complete and Calculated completion values are very close together (122 hours vs 117 hours). Also, the system is not driving BOINC into 24/7 priority. DCF is set at 1.000000.

We'll see how the package comes out about 4 to 5 days from now ....
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Message 34238 - Posted: 17 Jul 2008, 8:21:03 UTC

Just completed first of the latest batch off AP4.34 wu’s Pending. Start DCF .253944 complete DCF .341649


(4148972)44:51:31 claimed 1869.04

(4145070)44:31:55 claimed 1869.04

Origional Download completion times for units were 30:09:04

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Message 34255 - Posted: 18 Jul 2008, 1:23:12 UTC

Bringing this to the correct forum:

Could you show me where you got the 50% figure from? As of 2:30 pm 7/17, I see two successful 4.34 Linux results in the database (out of 62 successful workunits), which have received_time - sent_time = 4.02 days and 5.25 days. For the 4.33 Linux results, the received_time - sent_time ranges from 2 to 24 days, with an average of 11.23 days.

Check hostid 16343 tasklist for the ca. 50% figure. There is only one 4.34 result (done with the x86_64 application on opensuse10.3 64bit) in that list and a few 4.33 before.

Found a second linux host, which has at least 50% longer runtimes with APv4.34 compared to APv4.33. Check the tasklist of hostid 23827. I think that verifies my earlier statements: APv4.34 on linux has a problem.
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