Posts by MarkJ

21) Message boards : Number crunching : BOINC 7.8.3 available to beta test on debian (Message 1889124)
Posted 10 Sep 2017 by Profile MarkJSpecial Project $250 donor
Post:
7.8.2 is available now, at least for amd64 architecture.

The armel/armhf architecture seems to have problem so no version for the Rpi yet.
22) Message boards : Number crunching : BOINC 7.8.3 available to beta test on debian (Message 1886932)
Posted 30 Aug 2017 by Profile MarkJSpecial Project $250 donor
Post:
Thanks to Gianfranco the beta test version of BOINC 7.8.1 is available in Stretch-backports for those running Debian. Any issues found please report on the BOINC-alpha mailing list.

It might be possible to get it running under Raspbian if you have a Pi2 or Pi3 but you'll have to point to the Debian Stretch-backports repo as the Raspberry Pi foundation don't seem to have their own repo.
23) Message boards : Number crunching : Compute errors Linux "stock" app (Message 1883559)
Posted 13 Aug 2017 by Profile MarkJSpecial Project $250 donor
Post:
The later (4.10 and up) kernels have vsyscall disabled. Einstein had a message thread about it breaking their apps. See this thread for more details. Debian Stretch, which comes with a 4.9 kernel, has it enabled and seems to run fine on my Ryzen's.

@Rob, I understand you have the 4.8 kernel, but Mint may have disabled the vsyscall even earlier.
24) Message boards : Number crunching : Panic Mode On (107) Server Problems? (Message 1881621)
Posted 2 Aug 2017 by Profile MarkJSpecial Project $250 donor
Post:
I've got 3 hosts that are having upload problems and scheduler failures for Seti. Other projects seem fine on other hosts. Server status page says upload and schedulers working so maybe another DNS issue.

[edit]Just after posting that uploads start going through.
25) Message boards : Number crunching : For the betterment of BOINC (Message 1880256)
Posted 25 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
As already mentioned I would separate the CPU work fetch/scheduling from the GPU work fetch/scheduling so they are independent of each other.

Make credit standard across projects (maybe time based).

Fix the resource share across projects so it's fairer, maybe also time based (separated into CPU and GPU).

A cluster-aware client would be nice for those with farms so it could feed the compute nodes. It would use MPI to communicate with the science apps.

On the server side to help projects get going maybe YouTube videos showing how to setup the virtual image and get jobs going, a checklist of things to define/configure.

MarkJ
26) Message boards : Number crunching : Getting the most production for the least electricity (Message 1879228)
Posted 20 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
I think your numbers are actual load as opposed to his which are TDP. My 1060=6GBs drew between 80 and 90 W under full crunch.

. . But the total draw on the clunky old Pentium was about 360W.

Stephen.

The GTX1060 TDP is 120 watts. It also shows that in Nvidia-smi.

The figure I always find difficult to get is how much the memory (and other motherboard components) add.
27) Message boards : Number crunching : Getting the most production for the least electricity (Message 1879033)
Posted 19 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
For the 8c/16t route I went with a pair of Ryzen 7 1700's. Only 65w for the CPU. I put a GTX1060 (3Gb) which when running the Petri special sauce knocks over a task between 2.5min and 5min depending on the angle range. According to Nvidia-smi its pulling 74-75w. Its got enough PCIe lanes to run two cards at x16. I use Noctua heatsinks on all my rigs and Seasonic PSU. Cases are all Fractal Design ARC Midi (takes an ATX mobo). Not the cheapest to build but doesn't pull too much electricity either.

For 4c/8t I have 8 i7-6700's which only have the iGPU to keep power use down. While I could use the iGPU I don't. They too are rated at 65w but are a little faster than the Ryzen's. I had i7-3770's before these. The difference wasn't that great despite being 3 generations later. I'll probably wait another generation or two before they get replaced.
28) Message boards : Number crunching : Linux CUDA 'Special' App finally available, featuring Low CPU use (Message 1877916)
Posted 12 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
I found the version of wx3 I was looking for here, https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/locutusofborg-ppa/+build/9539157
Tried it with a new download of bonic-master and ended up at the same place I stopped the last time.
I started a new thread if someone has anything to offer, https://boinc.berkeley.edu/dev/forum_thread.php?id=11719
Doesn't look as though there's much activity over there.

Not sure if you have tried dropping Gianfranco an email. He is one of the Debian maintainers.

I know when DA announced a test version on BOINC-alpha Gianfranco asked for things to get fixed up. I think the whole dev tree is stuffed at the moment.
29) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1877389)
Posted 8 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
For those that like Debian I managed to update my GPU crunchers to Stretch using pretty much the same instructions to install apart from changing Jessie to Stretch.

One gotcha was my firewall script wouldn't execute any more. I used to have it in rc.local. I followed the suggestions on the Debian wiki which run it as a service which still seems to work, however you also have to set execute permissions on a couple of files. I didn't have to do that under Jessie.

Also tried clean-installing Stretch on iGPU machines and can't get a desktop (mate) any more. I've raised a bug with Debian for that one.
30) Message boards : Number crunching : To checkpoint or not -- the wear and tear of SSD drives (Message 1877387)
Posted 8 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
Q: Should the optimized app make checkpoints and report progress? How often? Based on time or number of internal iterations? Does it need a command line option for that?

I'm running the optimised app on GTX1060's (3GB) and they rip through a work unit in 5 mins or less. The machines all have HDD with a 2 minute checkpoint interval. I wouldn't bother with the complexity of checkpoints, but a percentage progress is always good to see.

Thanks for the great app. By the way if you're interested the Asteroids at home CUDA app needs optimising :-)
31) Message boards : Number crunching : Ok, what the heck is going on with limiting availability of video cards?? At least at Micro Center? (Message 1877385)
Posted 8 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
I'm counting my blessings for getting the 1080's and 1060's when I did. Dang.

Me too. I got a second pair of 1060's last month before the price jumped. I can see why they had a limit of 2 per customer.

Now might be a good time to sell off the GTX970's that my 1060's replaced.
32) Message boards : Number crunching : Ryzen on Linux (Message 1876776)
Posted 4 Jul 2017 by Profile MarkJSpecial Project $250 donor
Post:
The question is should i upgrade to kernel 4.11 or 4.12 ?

Mike

Ryzen support is in 4.9.10 onwards, so 4.10 or 4.11 is more than enough. The main thing to keep updated is the bios to get microcode updates and other fixes.

I'm running Debian with the 4.9.30 kernel which seems to be the latest they have at the moment.
33) Message boards : Number crunching : Debian Project Warns: Turn off Hyperthreading with Skylake and Kaby Lake (Message 1875372)
Posted 27 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
Thanks for the post. I have 8 of them. All got patched this morning.

Debian have a package called Intel-microcode available in both Stretch and jessie-backports. From what I understand the microcode is a partial fix and you also need a BIOS update.
34) Message boards : Number crunching : Validation pending.... (Message 1872518)
Posted 12 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
The size of your local cache has no significant impact on the number of "pending" results. The number pending is totally dependent on the relative turnarounds of you and your wingmen.

Because you have less in the cache they turn around faster. Sure they take the same amount to time to run but they spend less time in a "ready to start" state. Think of those people who have 5 and 10 day caches, that's around 4.5 to 9.5 days before they even start them.

The drawback is of course when there is an outage (like every Tuesday) you could run out of work but that's what other projects are for.

I agree with you regarding the error and invalid rates, they are more important than how many are pending.
35) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1872517)
Posted 12 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
We don't tend to reinstall very often. For what Tbar, Petri and Jason do it would make sense but for the average to slightly advanced users we want to install it and have it run. There is the occasional app update to take care of but that is pretty much it. I take the KISS principle, if I can get most of the bits from a repo then that's one less thing for me to stuff up.

I've switched my entire farm from Windows to Linux apart from a daily driver laptop. A process that is repeatable and reliable is the way to go. If I got a new machine today I could have it up and running in say an hour with exactly the same setup as all the others apart from hardware differences.
36) Message boards : Number crunching : Validation pending.... (Message 1872418)
Posted 11 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
I've got 2761 when I checked just now. That's out of 4595 so more than 50% are waiting. I run pretty small caches. A couple of my machines are running the cuda80 app which is quick.
37) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1872415)
Posted 11 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
Post the step by step guide here.

Its on the second page of this thread. It can also be found here

It doesn't cover the copying app_info and apps to the project folder but if you need that part I sure I can knock up something. I normally use a USB thumb drive and just drag and drop the files using the gui.
38) Message boards : Number crunching : Setting up a Linux machine to crunch CUDA80 for Windows users (Message 1872383)
Posted 11 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
Why pick the most complicated way of doing it?

You could do a bog-standard Debian install and get everything from the repos apart from the CUDA app. You get a more up to date BOINC client (7.6.33) which has improved CUDA detection and a more up to date CUDA driver (375.66). The only complex bit would be doing the app_info and apps into the project folder.
39) Message boards : Number crunching : Restarting BOINC Manager (Message 1872209)
Posted 10 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
I"m running Debian. I added the boincmgr to the desktop. In its properties I specified the password to the core client. That is the same password thats in /var/lib/boinc-client/gui_rpc_auth.cfg unless its blank.
40) Message boards : Number crunching : New Linux Trojans installs crypto currency mining software on Raspberry Pi (Message 1871948)
Posted 9 Jun 2017 by Profile MarkJSpecial Project $250 donor
Post:
You wouldn't think a Pi would produce much in the way of crypto currency. I have a bunch of Pi's and the first thing I do after imaging them is to change their password.

I did read one tutorial where the guy wanted to run it as a web server so he deleted the default user account. That sounds like a good idea now. For some reason though he didn't put a firewall on it.


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