Posts by MarkJ

1) Message boards : Number crunching : Multiple Different Seti Version Running on Same Machine - Why? (Message 1912856)
Posted 13 Jan 2018 by Profile MarkJ Special Project $250 donor
Post:
I expect BOINC is trying the different apps to find out which is fastest for each machine.

You have your computers hidden so you’ll have to login to the Seti website go to your account, click on view computers and then for each one details and then applications. Under there it will list each app and a figure for APR (Average Processing Rate). It takes at least 11 valid tasks to work out. It will cycle though the available apps and then pick the one with th highest APR.

If you want help un-hide your computers. If you want to see what information is shown click on any users name and then view computers. Its only fairly basic info like OS, memory, number of CPUs, etc.
2) Message boards : Number crunching : Anyone still using a raspberry pi 3 (Message 1909792)
Posted 31 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
Pictures? :)

Well I don’t know about him but I designed a 3D printed case to hold four side by side with active cooling. I am calling it the Pi ^4 (Pi to the Power of Four) case. I have done another version but am waiting on some parts before I can splash it all over the internet :-)

Pics of the prototype can be found here.
3) Message boards : Number crunching : SETI@home Data Activity page (Message 1909744)
Posted 31 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
I wonder what happened with LOFAR?

Parkes isn’t even on the map even thought its been talked about over the years and we should start to see some data for it soon(ish).
4) Message boards : Number crunching : SIGSEGV: segmentation violation (Message 1909741)
Posted 31 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
If they updated the Seti apps to use GCC 6 then the OP wouldn’t need the the vsyscall=emulate, at least for Seti.

The Einstein developers recently rebuilt one of their apps using libc 2.15 (from around 2012) to work around the issue. I would have thought they would update to a later version rather than going to even older code, but maybe it’s too hard.
5) Message boards : Number crunching : I need a little assistance with GPU's (Message 1909312)
Posted 28 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
while I have found a few places that state this, none actually stated where the data dir resides.

var/lib, usr/bin, etc/boinc-client....

It varies from one Linux to the next. Your BOINC event log/messages tab will tell you at the beginning. For Debian based systems it’s /var/lib/boinc-client.
6) Message boards : News : Special Fundraiser for Parkes Data Store and GPU development system (Message 1906093)
Posted 10 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
It's a good thing we have a head start here in Sydney, if I get to the bank early I might still squeak in under the rope.

If you have one the donation page does accept Australian Visa cards. It says it will also take Amex and MasterCard but I have no first hand knowledge with either of them. Another alternative if you have a PayPal account is to donate through the GPUUG web site. Exchange rate isn’t in our favour unfortunately.

You know you want one of the spinning hard drive or GPU icons next to your name...
7) Message boards : News : Special Fundraiser for Parkes Data Store and GPU development system (Message 1905844)
Posted 9 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
You gave $250.00
to SETI@home
on December 8, 2017
via Visa
Your confirmation number is 305041

Thanks to the Hanson family, Richard Haselgrove and Mr. Kevvy
8) Message boards : News : Special Fundraiser for Parkes Data Store and GPU development system (Message 1905577)
Posted 8 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
You gave $750.00
to SETI@home
on December 8, 2017
via Visa
Your confirmation number is 304888

I figure that's 10 disk drives after the donation matching :-)
9) Message boards : Number crunching : Anyone still using a raspberry pi 3 (Message 1904078)
Posted 1 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
Speaking of Rpi's IIRC somewhere someone said the the version of BOINC on the Jessie Distro had some issue with one of the projects and it not doing work. If someone remembers can they let us know.

Jessie is the previous release and came with BOINC 7.4.23. The current release is Stretch and it comes will 7.6.33.

There is a later BOINC (7.8.3 currently) in Stretch-backports but the Raspberry Pi foundation don't have a backports repo so you have to use the Debian repo if you want it. I have heard reports that this one may have issues. I have used it on the Pi without any problems. Your mileage might vary...
10) Message boards : Number crunching : Anyone still using a raspberry pi 3 (Message 1904075)
Posted 1 Dec 2017 by Profile MarkJ Special Project $250 donor
Post:
Or when you say headless, do you mean the board is not in a case with a fan next to it?

Headless means it doesn't have a keyboard or monitor plugged in. You log into it remotely. In the case of the Raspberry Pi that usually means using ssh.
11) Message boards : Number crunching : Help finding a single slot GPU card (Message 1900640)
Posted 12 Nov 2017 by Profile MarkJ Special Project $250 donor
Post:
There was a GTS450SP card. I bought 10 of them a few years ago when I was in Japan for work. They are rather dated now. (Released in 2010). They had 192 CUDA cores and were based on the GF106 chip. They also tend to overheat as the fan can’t move enough air unless you crank it up to 100% due to being a single slot design.
12) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1898053)
Posted 29 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
And you don't have a problem between Linux and Windows boxes?

Stephen??

It can also see Raspberry Pi’s. The only difference with them and a regular Linux box is they don’t broadcast their name on the network so you need to give each Pi a fixed IP address and enter that IP address in BOINCtasks.

I run BOINCtasks on a windows laptop that doesn’t do any crunching but it can see/control the whole farm. I had a mix of Windows and Linux crunchers including Raspberry Pi’s and a couple of Parallella’s. The Parallella’s have gone and the windows machines became Linux crunchers.
13) Message boards : Number crunching : Linux CUDA 'Special' App finally available, featuring Low CPU use (Message 1896444)
Posted 20 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
I am comfortable with that on installations where everything (BOINC and the projects) are installed under the one main folder but the repo version unnerves me as it puts some things in other places and I am afraid something would be missing and trash the attempt ...

. . How sure are you that the boincdata folder is complete and self contained with the repo version?

I had to upgrade all my Intel iGPU machines from Jessie to Stretch when the finally fixed the disappearing desktop issue. For each one of them I did:

1. Set BOINC to no new tasks
2. Login as root
3. Stop BOINC - in xterm type service boinc-client stop
4. Insert empty thumb drive into USB port. This brings up a window on the desktop showing the contents.
5. Using the gui copy the contents of /var/lib/boinc-client to the thumb drive. I click on the computer icon navigate to the folder, click on a single file, Ctrl-A to select all and drag it over to the thumb drive icon. Just like Windows.
5a. It complains about can’t copy sym linked files so navigate to /etc/boinc-client select all the files (there are usually four only) and drop them on the thumb drive icon as well.
6. Install new OS
7. Login as root and Install repo version of BOINC
8. Stop BOINC (in xterm type service boinc-client stop)
9. Insert thumb drive again
10. Using gui copy the files back to /var/lib/boinc-client
11. Copy the /etc files back separately using gui. They are symlinked from /var/lib. They get put there by the repo install, so overwrite them with your version from the thumb drive. I just drag and drop them one at a time.
12. In xterm cd to /var/lib/boinc-client and change permissions back to user boinc (chown boinc:boinc * -R).
13. Start it up and it resumes from where it left off.

For a new version of BOINC all I do is install it by login as root, start xterm, type apt update, type apt upgrade and it stops it, installs new version and starts it up again. You can even do it via ssh (remote login) if you want.

Hope that helps for future rebuilds.
14) Message boards : Number crunching : BOINC 7.8.3 available to beta test on debian (Message 1895389)
Posted 14 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
Thanks to Gianfranco BOINC 7.8.3 has hit Stretch-backports. Here is the change log from the BOINC message boards (thanks Jord),

Preliminary Change Log 7.8.2 -> 7.8.3
- client: extensions, fixes to account manager functionality
- client: eliminate possible buffer overflow in reporting result errors
- lib: fix boinc_file_exists() on Windows
- Mac: Changes to Xcode project to support screensaver changes for Mac OS 10.13.
- Screensaver: Changes for screensaver to support Mac OS 10.13
- api: BOINC graphics library changes to support Mac OS 10.13
- client library: inconsistent terminology for intel_gpu
- update project list
- Locale: Update french localization files
- update installshield files

For those running Ubuntu Gianfranco has a ppa you can get it from.

It does not fix the tasks tab/transfers tab from jumping to the bottom or the event log date format issues.

Note Debian did a 9.2 point release on the 7th of October that included a buggy Nvidia driver. It goes into idle mode after 15 minutes of compute tasks so you might want to skip the upgrade of Nvidia-kernel-dkms.
15) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1894048)
Posted 8 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
Thanks for the head's up, Mark. Perfectly happy with the 375.66 drivers.

I was too. Now I have to work out how to get them back.

It seems after a reboot its goes in P2 state and stays that way for about 15 minutes then drops into P8 (idle mode) and one has to reboot the machine to get it going again. I will raise a Debian bug for it but I'm sure its Nvidia's code.
16) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1894042)
Posted 8 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
Word of warning for those of you running Debian. They did a point release to Stretch (9.2) yesterday which includes Nvidia drivers 375.82. The driver gets stuck in P8 mode when running compute tasks so they take forever to complete.
17) Message boards : Number crunching : Anyone still using a raspberry pi 3 (Message 1893687)
Posted 6 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
Is it worth running seti on the pis?
$50 each and producing 300 results each, 6000 results costs you 20*50 = $1k

If you want to use them as crunchers you’ll need to add a heatsink to the SoC and a fan for air flow, and then there is a power supply.

You can have one larger fan cool a stack of them. Some of the multi-port USB chargers can be used to run 4 or more Pi’s off a single power point. The SD cards and fans wear out too so you’ll need to replace them over time, assume 1 to 2 years out of the SD card. There are some people running them off solar/battery but that adds quite a bit to the initial cost.

See Mod my Pi case for what I did to mine.
18) Message boards : Number crunching : Panic Mode On (107) Server Problems? (Message 1893148)
Posted 4 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
No, the disk is fine. Only using 6.5GB out of 215GB. It seems to clear itself up after a few BOINC restarts with the no state file found for task so and so.

Is this the BOINC 7.8.2 machine(s)? If so might be the slot directories issue
19) Message boards : Number crunching : Dual E5-2670 vs. Threadripper 16 core ?? (Message 1892910)
Posted 2 Oct 2017 by Profile MarkJ Special Project $250 donor
Post:
It was being caused by BOINC. I changed the checkpoint timer to 120 and the disk has quieted down..

On Raspberry Pi’s I have it set to 300 seconds to reduce the writes to the SD card. On my Ryzen’s I have 2TB HDD in them with it set to 120 seconds and a start delay of 2 for BOINC (so the machine can get past the initial start before trying to run 16+ tasks). You specify the start delay in cc_config.
20) Message boards : Number crunching : Linux & multiple GPU's - Numbercrunching very lov comparred to other projects (Message 1892345)
Posted 29 Sep 2017 by Profile MarkJ Special Project $250 donor
Post:
You didn’t say what app you are running. I would guess it’s the project supplied ones. If so you might want to run the cuda80 one, but you would need an up to date Nvidia driver installed (to get CUDA 8 support). There is a rather long thread about running it here


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