Posts by Steve Hawker*

1) Message boards : Cafe : Sicituradastra. Team Forum (Message 1296)
Posted 12 Jun 2015 by Profile Steve Hawker*
Post:
Hello Astra*s,

After a short break the team forum is once again alive and kicking. Come join the fun at:

http://www.astrafamily.net

Please note this is not the old address.

New members always welcome to the party
2) Message boards : Number crunching : Signal 4 (Message 1173)
Posted 19 Nov 2014 by Profile Steve Hawker*
Post:
I remember getting some stange errors like that a long time ago. I couldn't figure out why it was happening, but they went away after I rebooted my system. How long has it been since you restarted your computer?



So far, so good. w00t!!


Good to hear!


And now bad...

I had some WUs that progressed nicely all the way to 80%+ and then they all crapped out at the same time. The stderr is below. I had left these WUs crunching all alone until I suspended all tasks to travel home. I restarted them and that seemed OK, but as I say, all 8 WUs crapped out at about the same time.

STDERR:

<core_client_version>7.2.42</core_client_version>
<![CDATA[
<message>
process got signal 4
</message>
<stderr_txt>
Checkpoint Flag = 0.
Cvec Starting Index = 0.
N1 Start = 0.
N2 Start = 0.
PolyCount starting value = 0.
Stat Count 1 = 0.
Stat Count 2 = 0.
Stat Count 3 = 0.
Elapsed Time = 0 (sec).
Reading file ../../projects/numberfields.asu.edu_NumberFields/sf3_DS-10x271_Grp18669of682667.dat
K = x^2 - 2
S = [2, 5]
Disc Bound = 15625000000000000
Skip = (P^2)*(Q^6)
Num Congruences = 3
|dK| = 8
Signature = [2,0]
Opening output file ../../projects/numberfields.asu.edu_NumberFields/wu_sf3_DS-10x271_Grp18669of682667_0_0
Now starting the targeted Martinet search:
N2_L = -143.
N2_U = 143.
Checkpoint Flag = 0.
Cvec Starting Index = 0.
N1 Start = 0.
N2 Start = 0.
PolyCount starting value = 0.
Stat Count 1 = 0.
Stat Count 2 = 0.
Stat Count 3 = 0.
Elapsed Time = 0 (sec).
Reading file ../../projects/numberfields.asu.edu_NumberFields/sf3_DS-10x271_Grp18669of682667.dat
K = x^2 - 2
S = [2, 5]
Disc Bound = 15625000000000000
Skip = (P^2)*(Q^6)
Num Congruences = 3
|dK| = 8
Signature = [2,0]
Opening output file ../../projects/numberfields.asu.edu_NumberFields/wu_sf3_DS-10x271_Grp18669of682667_0_0
Now starting the targeted Martinet search:
N2_L = -143.
N2_U = 143.
N2_L = -142.
N2_U = 143.

</stderr_txt>
]]>
3) Message boards : Number crunching : Signal 4 (Message 1169)
Posted 18 Nov 2014 by Profile Steve Hawker*
Post:
I remember getting some stange errors like that a long time ago. I couldn't figure out why it was happening, but they went away after I rebooted my system. How long has it been since you restarted your computer?



So far, so good. w00t!!
4) Message boards : Number crunching : Signal 4 (Message 1168)
Posted 17 Nov 2014 by Profile Steve Hawker*
Post:
I remember getting some stange errors like that a long time ago. I couldn't figure out why it was happening, but they went away after I rebooted my system. How long has it been since you restarted your computer?



Just now, so I'll try again.

Thanks
5) Message boards : Number crunching : Underutilized CPU (Message 1167)
Posted 17 Nov 2014 by Profile Steve Hawker*
Post:
So, having got those errors on Get Decics, I switched to Bounded tasks.

These run to completion but the CPU % is sometimes in single figures, often around the 50% mark and almost never above 90% (according to me sitting there watching Activity Monitor on and off all day, mostly off).

its all a little odd.


So you are only seeing this on your Mac?

Could it be related to the preferences that say "use at most x% of cpu time" or "suspend work when CPU usage is above x%"? And there may be other configuarbles that I am forgetting about.


I have 2 MacBooks - I am seeing it on one but not the other.

CPU time and usage are both set to 100%

I have rebooted and it still only runs around 50%.
6) Message boards : Number crunching : Signal 4 (Message 1164)
Posted 17 Nov 2014 by Profile Steve Hawker*
Post:
Indeed unusual. Can you send the details of the system you are running on and perhaps stderr.txt?


Machine:

http://numberfields.asu.edu/NumberFields/show_host_detail.php?hostid=4811

stderr.txt for one wu:

<core_client_version>7.2.42</core_client_version>
<![CDATA[
<message>
process got signal 4
</message>
<stderr_txt>
Checkpoint Flag = 0.
Cvec Starting Index = 0.
N1 Start = 0.
N2 Start = 0.
PolyCount starting value = 0.
Stat Count 1 = 0.
Stat Count 2 = 0.
Stat Count 3 = 0.
Elapsed Time = 0 (sec).
Reading file ../../projects/numberfields.asu.edu_NumberFields/sf3_DS-10x271_Grp11273of682667.dat
K = x^2 - 2
S = [2, 5]
Disc Bound = 15625000000000000
Skip = (P^2)*(Q^6)
Num Congruences = 3
|dK| = 8
Signature = [2,0]
Opening output file ../../projects/numberfields.asu.edu_NumberFields/wu_sf3_DS-10x271_Grp11273of682667_0_0
Now starting the targeted Martinet search:
N2_L = -143.
N2_U = 142.

</stderr_txt>
]]>
7) Message boards : Number crunching : Underutilized CPU (Message 1162)
Posted 17 Nov 2014 by Profile Steve Hawker*
Post:
So, having got those errors on Get Decics, I switched to Bounded tasks.

These run to completion but the CPU % is sometimes in single figures, often around the 50% mark and almost never above 90% (according to me sitting there watching Activity Monitor on and off all day, mostly off).

its all a little odd.
8) Message boards : Number crunching : Signal 4 (Message 1161)
Posted 17 Nov 2014 by Profile Steve Hawker*
Post:
Ran some Decics but after an hour or so, got a Signal 4.

According to the interwebz this is an illegal instruction and I should inform you about it. But here's the weird thing - the Get Decics app is more than 2 years old. So surely someone would have seen this before. Unless this is another one of those Mavericks problems?
9) Message boards : News : Welcome Challenge Participants! (Message 886)
Posted 25 Jul 2013 by Profile Steve Hawker*
Post:
It's a complete hoot!
10) Message boards : Number crunching : Super long estimated times (Message 777)
Posted 22 Jan 2013 by Profile Steve Hawker*
Post:
Hey Jack,

Thanks! These are in Decics.

I received 150 WUs and noticed the behavior right after that so I've not have the chance to see how the queue is working or not.

With much higher estimation times, I'd suggest that my host - based on how other projects seem to work, particularly Primegrid - will be less likely to maintain a queue (assuming I got my understanding all straight). If the client holds a full buffer, based on inflated estimated times, then there will be fewer WUs in that buffer and a much bigger hole in the buffer will need to be created before another WU is downloaded. Right?

Also, I checked all my WUs and I see now that some have smaller estimates than I would expect (like seconds instead of hours).

Confused? You will be, after the next installment....
11) Message boards : Number crunching : Super long estimated times (Message 775)
Posted 22 Jan 2013 by Profile Steve Hawker*
Post:
Last day or so my active tasks have seen their estimated times inflate to hundreds of hours.

I'm used to seeing big leaps in progress % but now tasks that were previously estimated to take 11 hours (and did, more or less) are now being estimated to take 138 hours.

No biggie, tasks complete as usual, credit is as usual. Just thought I'd mention it in case it's an indicator of something else breaking.
12) Message boards : Number crunching : OpenCL/GPU app? (Message 694)
Posted 19 Jul 2012 by Profile Steve Hawker*
Post:
Eric,

Any news on the GPU front? I would dearly love to have my GPU crunch away on this project.

S.
13) Message boards : News : Another milestone reached (Message 693)
Posted 19 Jul 2012 by Profile Steve Hawker*
Post:
See:

http://stat.la.asu.edu/NumberFields/forum_thread.php?id=5&nowrap=true#23

Although obviously Eric could pull the plug at any time.




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