Posts by Link

1) Message boards : News : Breakthrough Listen data now flowing. (Message 1781672)
Posted 23 Apr 2016 by Profile Link
Post:
I don't see why someone would want to do only 1/3 or 1/4 of what he can actually do for the project.


I estimate we have from hundreds to thousands of times greater of a chance finding ETI in a GBT work unit than an Arecibo one, because it is targeted to stars that are nearby, known to have exoplanets, and known (or thought) to have them in favourable positions for life (as we know it, Jim.)

It comes down to quality over quantity. And it's rather sadly ironic that the people who have contributed to this project the most over the years in terms of work done and time/money/effort invested in doing so are now mostly excluded from its most anticipated and promising venture.

From the project's point of view it doesn't matter which computer completes a particular task, they all have to be done regardless of the "quality". However, IMHO it should matter to use the resources they get from us in most efficient way possible. Not doing that slows down the processing of all "tapes". All our computers work on the same thing, assigning work in an intelligent way speeds up the progress and that's all we should be interested in.

BTW, the MESSIER031 tasks are non-VLAR as far as I see and can be crunched on GPU, so no one is excluded.
2) Message boards : News : Breakthrough Listen data now flowing. (Message 1780364)
Posted 19 Apr 2016 by Profile Link
Post:
Efficient is to send a task to a processing unit, which can process it fastest compared to other type of work on the same PU. Sending a VLAR to a GPU, which could crunch 3-4 mid-AR tasks (according to message 1779961) in the same time is waisting of ressources, since a CPU does the VLAR in nearly same time as a mid-AR WU.


Again, this is only correct for CUDA. The VLAR issue does not affect OpenCL so GUPPI work units would complete in about the same time. Most people are going to have both platforms available, as far as I know. All we ask for is to be able to make the decision to run them ourselves.

What about 1779961? As I understand it, the performance is decreased by factor 3-4, so OpenCL is affected, but the issue is "just" performance. I don't see why someone would want to do only 1/3 or 1/4 of what he can actually do for the project.
3) Message boards : News : Breakthrough Listen data now flowing. (Message 1780331)
Posted 19 Apr 2016 by Profile Link
Post:
Since the core is going to get used anyway, why not use it the most efficient way to crunch those VLARS?

Efficient is to send a task to a processing unit, which can process it fastest compared to other type of work on the same PU. Sending a VLAR to a GPU, which could crunch 3-4 mid-AR tasks (according to message 1779961) in the same time is waisting of ressources, since a CPU does the VLAR in nearly same time as a mid-AR WU.
4) Message boards : News : Article about distribution of Breakthrough data. (Message 1779873)
Posted 17 Apr 2016 by Profile Link
Post:
Posting those articles, even though it's a good thing about marketing, is a great misrepresentation of the "efficient donation of computational power"! Not to mention that it doesn't propagate some kind of program that regulates BOINC in accordance to temperature of the CPU & GPU (like Tthrottle for example)...

Well, this article is written for "average" users, so they have to keep it simple, otherwise most of those users will just say "it's too complicated for me". And than if you tell them, they will burn their computer it they don't install another program, that monitors the temperatures, pretty much not one of them will try. I mean, an average user does not even know, what temperatures are OK for a CPU or a GPU. And he/she actually does not need to know it, any "modern" CPU/GPU will throttle itself, if it gets too hot. Sure, running close to max. temperature isn't optimal for 24/7 SETI crunching, but that's probably also not what the average user will do.
5) Message boards : News : Article about distribution of Breakthrough data. (Message 1779871)
Posted 17 Apr 2016 by Profile Link
Post:
My HP laptop is crunching vLHC@home, Einstein@home searching for gravitational waves and SETI@home on Green Bank data. No smoke coming out of it.
Tullio

My over 10 years old Pentium M based laptop is also still fine (well except for the hard drive, which has some small issues recently, but that's not because of BOINC but because of soon 52000 hours of being on).
6) Message boards : Number crunching : Panic Mode On (102) Server Problems? (Message 1772087)
Posted 17 Mar 2016 by Profile Link
Post:
OK, than I know... thanks.
7) Message boards : Number crunching : Panic Mode On (102) Server Problems? (Message 1771964)
Posted 16 Mar 2016 by Profile Link
Post:
Has the resend lost tasks feature been turned off? I have lost one WU while trying to get stock apps to run on NativeBOINC and the servers didn't send it back to me so far...
8) Message boards : Number crunching : NativeBOINC & SETI@Home v8 (Message 1771648)
Posted 14 Mar 2016 by Profile Link
Post:
Rasputin42 wrote:
because of the app_info


You said it yourself.
Move it or delete it. Restart boinc.

That far I have come by myself. My question was "how to remove it?" This is not Windows, where I can simply navigate to the project folder with Windows Explorer or whatever.


Raistmer wrote:
if it's not rooted, delete SETI@home project and attach again, but this time entering URL manually as it would be unknown project.
This way you get stock binary.

Thanks. I found now also another way to do it, for those interested it is in the "native client" menu, something like "delete project applications (from app_info.xml)". The words might be little different, I use german GUI.
9) Message boards : Number crunching : NativeBOINC & SETI@Home v8 (Message 1771592)
Posted 14 Mar 2016 by Profile Link
Post:
How do I get SETI v8 to run on NativeBOINC, i.e. how do I get rid of the anonymous platform? It was pretty easy to get it to work since it was installed automatically, but how to remove it?

Detaching and reataching to the project via the GUI on the phone did not help, doing that thru other computer gave me one WU, however it was than instantly deleted because of the app_info.

14/03/2016 17:43:28 SETI@home Sending scheduler request: Project initialization.
14/03/2016 17:43:28 SETI@home Requesting new tasks for CPU
14/03/2016 17:43:29 SETI@home [update_apps] dont preempt suspended (cpusched)
14/03/2016 17:43:30 SETI@home Scheduler request completed: got 1 new tasks
14/03/2016 17:43:30 SETI@home [error] App version returned from anonymous platform project; ignoring
14/03/2016 17:43:30 SETI@home [error] No app version found for app setiathome_v8 platform arm-android-linux-gnu ver 800 class armv7-vfpv3-nopie; discarding 17se10af.16619.14386.12.39.141_0

Any suggestions?
10) Message boards : Number crunching : New app? (Message 1753596)
Posted 3 Jan 2016 by Profile Link
Post:
Honestly I did not download NativeBOINC from Play, I downloaded it from Mateusz web site. And that version defaults to his app and anonymous platform in auto mode. That is, no user action required to get anonymous platform configured and best optimized app for Android to work. Device shouldn't be rooted for that. Is Play version different?

No, I got there the opt app without doing anything special.
11) Message boards : Number crunching : vlars taking ages to run (Message 1750445)
Posted 19 Dec 2015 by Profile Link
Post:
08ja11af.25606.9883.3.12.54.vlar_0 has completed and validated. 52,287 secs runtime and 21,318 cpu time.

Means it has run the normal 6 hours, but in the same time something else was eating up over 50% of your CPU cycles.
12) Message boards : Number crunching : Panic Mode On (101) Server Problems? (Message 1734894)
Posted 17 Oct 2015 by Profile Link
Post:
Is it just me or are the task pages not updating (for users and computers)?


The replica is offline.

OK, than I know. Was not sure because in the past it worked also sometimes without the replica.
13) Message boards : Number crunching : Panic Mode On (101) Server Problems? (Message 1734877)
Posted 17 Oct 2015 by Profile Link
Post:
Is it just me or are the task pages not updating (for users and computers)?
14) Message boards : Number crunching : The kittyman has fixed the rig, work on the way, wingys! (Message 1692582)
Posted 17 Jun 2015 by Profile Link
Post:
Hard to say what low level driver(s) could be causing you pain.

Set devmgr_show_nonpresent_devices=1 (environment variable, when you're at it, can also add devmgr_show_details=1), so you can see all not anymore present devices in the device manager and uninstall all of them (and also all other ones with problems, i.e. exclamation marks or so). Also uninstall all other software, that came with any drivers. Reboot and than try to install new drivers, not before.

But a clean Windows installation might be the easier and faster way on a crunching only machine (backup BOINC data dir if you want to).
15) Message boards : Number crunching : Running BOINC on a Dead System (Message 1679268)
Posted 13 May 2015 by Profile Link
Post:
Maybe he can install a SETi@home on a USB...& boot from a CD? ;)

Yes, this should work with Linux, there are many distributions, with support this (boot of a CD, save files and settings to USB or whatever you want).

Or simply get a bunch of old HDDs from eBay for 1€ (or 1£ in your case) or so, won't cost more than not the cheapest USB flash drive (should not be too cheap/slow for such use).
16) Message boards : Number crunching : AMD ATI Radeon HD 2300/2400/3200/4200 (RV610) (336MB) - SETI/AP possible? (Message 1677742)
Posted 10 May 2015 by Profile Link
Post:
AFAIK, Milkyway were also a solution for 'small' ATI/AMD VGA cards, right?

Not really, they have an CAL app for older GPUs, however that are older high-end GPUs with DP support, in particular HD38X0 series. On a "small" GPU like the HD4200 Milkyway won't run.
17) Message boards : Number crunching : Monster GPU Cruncher Build (Message 1670778)
Posted 27 Apr 2015 by Profile Link
Post:
Or SSD + HDD?

SSD. I wouldn't expect BOINC to write more than 2PB to the disk during the time you'll probably use that machine, even if you should use it veeery long. HDD will very likely wear out sooner, since it's spinning all the time. And with this I/O performance you don't need to think much about a RAM drive.



I searched the web, and found the 2.000 Watt Super Flower Leadex 80 Plus Platinum 8Pack Edt. PSU. AFAIK available since January '15.
AFAIK Super Flower is an UK company. But unknown for me.
It's a good brand?

I have a Super Flower in my desktop computer, bought it about 10 years ago for my AthlonXP system after a GPU upgrade. Still works without any problems, even if with the current configuration the 25A 12V rail is pretty much maxed out when crunching on both CPU and GPU. Can't say one bad word about it so far.

Here is btw the homepage of Super Flower.

And according to the feature list, the 2000W PSU has overheat protection and a single 166.6A 12V rail. So should be OK.
18) Message boards : Number crunching : HDD Questions For The Elite - [PROBLEM RETURNED] (Message 1626181)
Posted 10 Jan 2015 by Profile Link
Post:
I've always felt that RW blanks were a false economy, especially for something important like a backup.

Not if you check the disc after burning, just as you'd had to do with Rs if you want to be sure. Considering how often I burned all my RWs, I saved quite a lot, so IMHO using RWs for data, that's gonna be replaced in 2-3 weeks or so anyway, is a good idea.

A lot of time wasted with all that erasing and formatting

Optical media are slow anyway, hence I swithed to USB-HDDs for beckups about 3 years ago, the amount of data I backup today on weekly basis would not be manageable with DVD-RWs anymore (I've backup before only most important stuff, now I can simply backup everything I want). Long term HDD is probably even cheaper than RWs and saves me lots of time. I wouldn't want to return to optical media for backups anymore.
19) Message boards : Number crunching : HDD Questions For The Elite - [PROBLEM RETURNED] (Message 1626175)
Posted 10 Jan 2015 by Profile Link
Post:
Glenn savill wrote:
Link i look for the cheapest mate so what if a few fail at $20 ozzie can't expect much for a spindle of 50 disc's . The fail rate goes down if i burn at slow speeds , most times i forget and burn at full speed

I pay ~15-20€ for 100 discs, usually no failures at all... 10% would be completely unacceptable for me. But I burn them only @4x or 6x.



Mark Stevenson wrote:
Theres a big difference between r's and rw's . r's are 1 burn only rw are re burnable , different type of disc completely

I know very well what Rs and RWs are. Never had any significant failure rates on any of them.
20) Message boards : Number crunching : HDD Questions For The Elite - [PROBLEM RETURNED] (Message 1626130)
Posted 10 Jan 2015 by Profile Link
Post:
Link when you by a spindle of disc's say 50 i've always found aprox 10% will fail . Unless you pay top dollar 10% at least will fail .


You pay for what you get

10%??? I don't know how you get such failure rates. I buy not the cheapest but not much above it. I burned now about 2000 discs (R, not RW), I had nearly no failures at all, definitely less 10 and 3 of those was a dying burner and not the discs.


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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.