Posts by HAL9000

1) Message boards : Number crunching : Anyone still using a raspberry pi 3 (Message 1927439)
Posted 22 days ago by Profile HAL9000
Post:
Is it possible to have 1 raspberry pi hand out work units to the other raspberry pi's in a cluster? And have 1 computer account be the go-between of all of them in the cluster and SETI? So that the cluster would look like 1 PC to SETI?

It is possible, but you will need to write the software to do it.
2) Message boards : Number crunching : Come on admit it, you have an E5-2670 crunching on Boinc and/or Seti@Home. How is it doing? (Message 1925722)
Posted 22 Mar 2018 by Profile HAL9000
Post:
I've considered regooping the VRMs and PCH but they are bolted down from the underside side of the MB.
So I would have to completed remove it & that is more work that I have been wanting to do.
3) Message boards : Number crunching : Come on admit it, you have an E5-2670 crunching on Boinc and/or Seti@Home. How is it doing? (Message 1925497)
Posted 21 Mar 2018 by Profile HAL9000
Post:
The BMC temp displays the same value as the PCH temp in other monitoring apps.
4) Message boards : Number crunching : Come on admit it, you have an E5-2670 crunching on Boinc and/or Seti@Home. How is it doing? (Message 1925456)
Posted 20 Mar 2018 by Profile HAL9000
Post:
Comparing the temps to my SC2600CP with two E5-2670's it may normal for that system.

5) Message boards : Number crunching : M$ crazyness (Message 1925455)
Posted 20 Mar 2018 by Profile HAL9000
Post:
This isn't the first time they have had this kind of issue & I doubt it will be the last.
Something that really throws a lot of software for a loop is having a system drive that isn't C:
Most people won't have that specific issue, but as someone that tests software for a living I do like to find weird bugs that make developers walk away saying "how?!"
6) Message boards : Number crunching : Anyone try an ASIC USB stick for SETI crunching? (Message 1923060)
Posted 6 Mar 2018 by Profile HAL9000
Post:
Getting the USB miners to work for Bitcoin Utopia wasn't what one might call "plug-and-play".
A GPU is really plugging the device in and installing a driver.
The miners required manual configuration of BOINC so they would be detected and function correctly.
Which wasn't overly complicated but did have a learning curve to it.
7) Message boards : Number crunching : is there a page that shows when Top Participants was last updated? (Message 1923057)
Posted 6 Mar 2018 by Profile HAL9000
Post:
Judging by the difference between my current score and the score shown in the table, about 13 hours ago. Perhaps assume 'daily' as a plausible interval?

I seem to recall there is something odd about how the stats pages are updated.
Along the lines of when the page is requested it is updated if it hasn't been in the past N hours.
So then the time that each page can be updated gets out of sync after a while and we get people lost between the pages.
8) Message boards : Number crunching : What was once old is new(er? ish?) again. (Message 1922630)
Posted 4 Mar 2018 by Profile HAL9000
Post:
Hal, thanks for the heads up, quick question, does what you run in that batch file nuke your historical information, which would be displayed on the Statistics page in BOINC? I have mine set to save the info for something like 12000 days or some such thing, but I don't believe that this is the issue with that huge file, because the one on the machine I am on now is only around 5 or so meg, and has over a year and a half of data points, about the same as the other one (mid-2016 setup date on both).

The data for the stats graphs are stored in the statistics_[PROJECT_NAME].xml files.
I only have BOINC store the last 760 days since I backup the stat files on each startup.
9) Message boards : Number crunching : What was once old is new(er? ish?) again. (Message 1922323)
Posted 3 Mar 2018 by Profile HAL9000
Post:
Quick question, I was defraging the drive after installing and then removing .net 4.0 as it didn't work (going to try 4.7.1 when it's done) and the defrager I use has a section where it lists large files. I noticed 2 that were pretty huge, and can't imagine they are supposed to be that big unless there is some type of logging situation turned on that I am not aware of. They are both in the ProgramData\BOINC directory, and are called temp_time_stats.xml and time_stats_log.

They are both about 388 meg, which isn't a big deal in the scheme of things, but wondering what they are, if they are both needed and why they might be that big? I checked on my lotsacores box, and they are both there, but are both under 5 meg. Is there a way to shrink them down to this type of size?

As part of my startup bat for BOINC I clear out several files that tend to get left over or are of no use to me.
del time_stats_log
del http*.*
del job_log_*.txt
boinc.exe --skip_cpu_benchmarks --detach
10) Message boards : Number crunching : How can I build a working MB8 OpenCL ATi HD5 exe? (Message 1916965)
Posted 5 Feb 2018 by Profile HAL9000
Post:
I'm not sure what you are trying to build, but you can download the current r3584 version from
Mike's World http://mikesworld.eu/download.html or Raistmer's cloud storage https://cloud.mail.ru/public/3nxq/SgQBZXcM7/

If you need the current source you could contact Raistmer and see where it is stored.
11) Message boards : Number crunching : A very steep decline in Average Credits!!! (Message 1915699)
Posted 29 Jan 2018 by Profile HAL9000
Post:
Just seems to be the usual YMMV.
Meow.

Indeed. Mine has been slowly on the rise for about two weeks.
12) Message boards : Number crunching : See a new Staff Scientist opening posted this past week (Message 1915501)
Posted 27 Jan 2018 by Profile HAL9000
Post:
I wouldn't expect any new staff brought in for Breakthrough Listen to be involved with the day to day actives of SETI@home. It has had the opposite effect so far.
13) Message boards : Number crunching : New Android device. Bad outcome so far (Message 1915453)
Posted 27 Jan 2018 by Profile HAL9000
Post:
Ok so apparently https://boinc.berkeley.edu/dl/ is now forbidden so older versions aren't available.
That's because the URL isn't needed as HTTPS.
http://boinc.berkeley.edu/dl/?C=M;O=D works fine. Or linking directly to the app, be it from HTTP or HTTPS:
http://boinc.berkeley.edu/dl/boinc_7.4.43.apk
https://boinc.berkeley.edu/dl/boinc_7.4.43.apk

7.4.43 plus the Seti applications should work fine on Android 6, it's with 7 and above that there are major problems.
Or as Eric told me once: "Yes, google keeps changing the rules in the name of (a false sense of) security. What's worse, they keep changing the development kit so a command line build of the app no longer works. My last attempt at at an android 7 build resulted in an app that doesn't work. I hope to get a chance to try again soon."

I would guess the http https change for the download directory occurred when http://boinc.berkeley.edu was setup to point to Science United and https://boinc.berkeley.edu pointed to BOINC.
It looks like Science United has been moved to https://boinc.berkeley.edu/scienceunited/

I also had to roll back to 7.4.43 on my Galaxy S4 with 4.4.4 KitKat.
With Google and the device manufactures constantly changing things or doing different implementations it can't be easy for BOINC or the projects to support.
14) Message boards : Number crunching : New Android device. Bad outcome so far (Message 1915385)
Posted 27 Jan 2018 by Profile HAL9000
Post:
I'd say it's software issue. 7.4.43 seems to be the last "good" (AKA working) version. Later versions seem to be nothing but trouble from what i've read on other boards.

Ok so apparently https://boinc.berkeley.edu/dl/ is now forbidden so older versions aren't available.

I've made 7.4.43 available here.

Size: 8411162 bytes (8.02 MB)

• CRC32: A76DE89C

• MD5: 746EE89226E2504E387FA24B448C0E1B

• SHA1: 660E25C2105E14F28D2EFE582482B36441CC4049


Or you could download the any of the apks directly from the site.

[https://boinc.berkeley.edu/dl/boinc_7.4.43.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.44.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.45.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.46.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.47.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.48.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.49.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.50.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.51.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.52.apk
[https://boinc.berkeley.edu/dl/boinc_7.4.53.apk

All they have done is disable directory browsing for the download folder.
15) Message boards : Number crunching : Christmas money pouring into Newegg.... (Message 1914690)
Posted 23 Jan 2018 by Profile HAL9000
Post:
Even though my home made stand is working out fine for me, I have another board that I'd like to remote the video card on, so thought since mining has been booming again recently, I would take a look at what options I had for a reasonably priced, fairly simple stand. I guess before I started looking I should have thought about what happened in the CA gold rush, and how the people who made most of the money were the ones who supplied the miners, not the vast majority of the actual miners, who broke even, or worse.

Did a quick google, hit some links to fleabay and to Amazon, and was shocked to see what they are asking for a few cut pieces of extruded aluminum and some bolts. Mind boggling, They were all at near to Way over $100, which I guess goes along with the situation we're having in video cards right now. $25, 30, maybe, but $150-250? Umm, no. I'll keep looking to see if I can find any sanity out there, or else I'll just have to roll my own again. I'm sure v 2.0 will be much better, and won't have the special Dewalt enhancements on it this time either.. ;-)

Hmmm... I can get a 3 foot lengths of 1/2 inch alum stock at my local hardware store for about $3 & a 100 pack of pop-rivets is about $6. So I could probably put a nice little stand together for around $25.
Perhaps I should start doing that and selling them for $75 to undercut the other guys and make some cash to fund my future hardware...
16) Message boards : Number crunching : Panic Mode On (109) Server Problems? (Message 1913877)
Posted 19 Jan 2018 by Profile HAL9000
Post:
MW is fine, but IIRC to do something productive there you need to have an AMD GPU, NV stuff has troubles to work with DP used by MW.

Does that changes?

GPUGrid with it's long time to crunch WU is not really a project to use as a backup. IMHO

Milkyway used Double Precision calculations.
Most GeForce GPUs are allowed DP performance of 1/32 SP
Radeon GPUs are allowed DP performance of 1/16 SP

So if both GPUs were 6000 GFLOPS in Single Precision the GeForce would be 188 GFLOPS DP and the Radeon 375 GFLOPS

If you move to the workstation GPUs they will have DP performance of up to 1/2 SP. Which is likely why they have 4 digit price tags.
17) Message boards : Number crunching : 100 WU limit for GPUs is too low. (Message 1913285)
Posted 16 Jan 2018 by Profile HAL9000
Post:
Is there a 'better' database to use than Informix? What does Google use, for example? SQL by MS? And is it practical to switch? Though I have heard of Informix for quite some time, I just Googled it and found that it is an IBM product. I guess I am old, but I thought that IBM had a reputation for doing big iron, and a solid DB? Or has that ossified over the years?

*edit* Just took a closer look at the quick blurb on Google, and this caught my eye: Stable release: 12.10.xC7 / June 15, 2016. I can appreciate having something just work if it ain't broke, but I don't know, it seems to me that over 18 months between stable releases seems like a pretty long time in the compressed IT world we live in now. But then again, what do I know? ;-)

It is the BOINC master database which uses mySQL rather than the science databases that use Informix. The issue is more how SETI@home uses the database.
For all of the tasks assigned to hosts, "results out in the field", the task information is stored in a single table.
So when tasks are assigned, reported, or a host doesn't an update then that table is accessed.
For the hardware running the db the limit of that table turns out to be around 11,000,000 rows. Then it can not longer complete a query fast enough. Which causes the db server to stop and the project to be offline for several hours if not days which recovery is run.

So the solutions are
1) Have more hefty master and replica db servers.
2) Recode how the results are sent to hosts are stored.
3) Limit the number of tasks sent to hosts.

#1 is a stop gap until that hardware hits its limit.
#2 is probably the best solution, but requires dedicated time that isn't available to the project.
#3 easiest to implement and can be adjusted if the db server gets near the limit again.
18) Message boards : Number crunching : 100 WU limit for GPUs is too low. (Message 1913217)
Posted 15 Jan 2018 by Profile HAL9000
Post:
As I just learned there is a maximum of 100 WUs per compute device, or device class, and with an average of about 4-5 minutes per WU, that's a maximum of about 8 hours of work I can store, and with the splitters out all the time recently, this really doesn't cut it.

I'm already out of work for two hours with the current outage.

A cache of 100 tasks is only about an 8 hour cache for my dual E5-2670, or R9 390X as well. When we have shorties it is even less.
There are a few options to handle running out of work during an outage.
1) Have a backup project in BOINC.
2) Let your system(s) have a break when they run out of work.
3) Not run the project.
19) Message boards : Number crunching : Panic Mode On (109) Server Problems? (Message 1912538)
Posted 12 Jan 2018 by Profile HAL9000
Post:
I don't know what you guys are doing, the time estimates on both of my boxes with GTX1060s are very accurate. I run 2 at a time and they process at the rate of 4 an hour, so they estimate 30 min a task.

I was running my R9 390x 24/7 on it for a few months until I rotated to Milkyway. The only work fetch issue I had was not filling my 5+5 day cache queue. I was only getting ~8 days worth of tasks.
20) Message boards : Number crunching : A very steep decline in Average Credits!!! (Message 1911959)
Posted 9 Jan 2018 by Profile HAL9000
Post:
My RAC is still going up after the server issues in December.


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SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.