Posts by HAL9000


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21) Message boards : Number crunching : Panic Mode On (92) Server Problems? (Message 1603234)
Posted 7 days ago by Profile HAL9000
I just found with BOINC 7.2.42 that with a backup projects it stops working on the backup project as soon as work is received for a non-backup project.


I haven't seen that. One of my CPU-only host is still working with backup project (S@H beta). 1/6 cores are working with S@H, and host has 36 S@H workunits ready to start.

I think I found how why it is doing that for me. My i7's download 8 tasks from their backup projects. However I am using an app_config.xml with <max_concurrent>4</max_concurrent> set. BOINC will finish the 4 tasks that it actively processing for the backup project while it downloads work for the main project. Then will start the main project tasks leaving the remaining 4 backup project tasks "ready to start".
I imagine the backup tasks would start again if BOINC went to high priority mode.
22) Message boards : Number crunching : Panic Mode On (92) Server Problems? (Message 1603216)
Posted 7 days ago by Profile HAL9000
Yep, getting some tasks here 2, but why does Rosetta work always want to go into high priority mode whenever I get SETI work? :-O

Cheers.

I just found with BOINC 7.2.42 that with a backup projects it stops working on the backup project as soon as work is received for a non-backup project.


How does Boinc determine which is a backup project, and which isn't?

P.

Projects with Resource Share set to 0 are "backup projects".
23) Message boards : Number crunching : Panic Mode On (92) Server Problems? (Message 1603163)
Posted 7 days ago by Profile HAL9000
Yep, getting some tasks here 2, but why does Rosetta work always want to go into high priority mode whenever I get SETI work? :-O

Cheers.

I just found with BOINC 7.2.42 that with a backup projects it stops working on the backup project as soon as work is received for a non-backup project.
24) Message boards : Number crunching : Best performing hardware (Message 1603159)
Posted 7 days ago by Profile HAL9000

When I win the lottery I'm going to use a couple of these...

Oh yeah! The K80 is rated 8.7 TFLOPS/s for single precision and therefore would/should be considerably faster then the fastest consumer GPUs.

http://www.computerworld.com/article/2848128/servers/nvidia-reaches-high-on-graphics-performance-with-tesla-k80.html

Problem really is the price, it should be around $7000 :-(

I don't know about accuracy, but the price is quoted as being $5,000 on anandtech.
Which is $2000 more than a Titan Z that is rated at 8.1 TFLOPS.
25) Message boards : Number crunching : Best performing hardware (Message 1603151)
Posted 7 days ago by Profile HAL9000
Thanks for the info.

Regards to the Intel GPU I was thinking of running this instead of the Intel CPU alongside the Radeon, My thoughts were lower power for the same sort of output?

So iGPU + Radeon & no CPU? I'm not as familiar with the Ivy Bridge iGPU as I am with Haswell. If the CPU to iGPU performance scales the same. Then you could expect about the same amount of output vs CPU + Radeon at lower power levels. The iGPU runs in the neighborhood of 11-15 or so watts.

EDIT: Also I just noticed I messed up on the GFLOPS for your iGPU. It should have been 294.4 instead of 107.52. As it has 16, not 6, execution units.
26) Message boards : Technical News : Status Update (Nov 19, 2014) (Message 1603132)
Posted 7 days ago by Profile HAL9000
Would the process of doing it in chunks as Matt described when doing this for the SETI@home science database last time be of benefit in this situation?
27) Message boards : Number crunching : Best performing hardware (Message 1603122)
Posted 7 days ago by Profile HAL9000
Damn that system beats mine :

http://setiathome.berkeley.edu/show_host_detail.php?hostid=7407076

Couple of questions, on the Nvidia system posted he is doing a wide range of GPU based units where as I am only doing one type, is this because he has a Cuda capable card?

Second I was under the assumption that CPU was still important as there is specific work types that only run on CPU?

Third I have a second box with a 3770k installed, is it possible to crunch on the CPU's GPU and the discrete (270x) card at the same time?
I think this combo rather than CPU + 270x would use less power and produce about the same points?

In my first message I has mentioned which apps run best on which hardware. However with SETI@home all 4 types of hardware CPU, ATI GPU, Intel GPU, & NVIDIA GPU can run both Astropulse & SETI@home applications. At least in Windows.
From the Applications page you can see what apps there are for which types of hardware in each OS.
OpenCL is used for the ATI, Intel, & Nvidia Astropulse apps
OpenCL is used for the ATI, & Intel SETI@home apps.
CUDA is use for the NVIDIA SETI@home app.

It looks like none of your machines have done any Astropulse work. You may have disabled Astropulse in your preferences. You can check your Project Preferences & make sure everything is enabled or at least SETI@home v7 & AstroPulse v7. As those two are the current active applications that we are working on right now.
Run only the selected applications:
SETI@home Enhanced - Obsolete & replaced by SETI@home v7
SETI@home v7
AstroPulse v6 - Obsolete & replaced by AstroPulse v7
AstroPulse v7

CPUs are still important. However a system with a mid to high GPU the CPU output does only account for a fraction of the systems total output. Primarily because GPUs are several times more efficient that CPUs in the manor we are using them. For example my HD6870's will process an Astropulse task in about 30 min & my i5-4670's will take about 4 hours running 4 at a time. So in 4 hours my HD6870 has completed 8 tasks where my CPU has completed 4.

Also the Intel HD4000 @ 107.52 GFLOPS is much less powerful than your R9 270x @ 2560 GFLOPS.
28) Message boards : Number crunching : Crunching on Intel and discrete Graphics? (Message 1603097)
Posted 7 days ago by Profile HAL9000
If you need help forcing monitor detection & extending the desktop for the iGPU. I did a step by step.
http://www.hal6000.com/seti/manual_display_detect.htm
29) Message boards : Number crunching : Panic Mode On (92) Server Problems? (Message 1602745)
Posted 8 days ago by Profile HAL9000
That's some good news:)

Work is now getting Split, my T8100 received a good bucket full, all VLARs.

Claggy

Aye, The SETI@home bit buckets are refilling at the moment.
30) Message boards : Number crunching : Panic Mode On (92) Server Problems? (Message 1602677)
Posted 8 days ago by Profile HAL9000
Well,

If we hit Thanksgiving and it's still not up then we are probably looking at the beginning of next year.

Now, I'm not saying that to undermine all the things that the guys over there are doing.

It sounds like they are busting their behinds trying to get things to run.

Just, from my experience with dealing with others that when you are trying to fix something and it happens around the holidays, it's almost impossible to get help (ie venders, suppliers, help desk, etc) when you are trying to fix things.

People have planned vacations, extended weekends, etc And this is pretty much the biggest holiday season of the year.

Not to mention, they DO have families..

So at this point, if it comes back before then Great.

If it doesn't. My world isn't going to end.

And on that note, I hope EVERYONE has a Great Holiday season!!

Eric's post mentioned it has taken 5 days to get to 25% & that was about 6 day ago. So if it still going it should be somewhere around 50% complete. In theory that would put the completion time around the 28/29th. Being a holiday weekend for the US maybe after maintenance on the 2nd AP shall return.
31) Message boards : Number crunching : Seti fundraising via Bitcoin Utopia (Message 1602676)
Posted 8 days ago by Profile HAL9000
My machines started running out of work on Saturday and, since there are no other BOINC projects that I currently support, I shut them down as the WUs ran out. Checking my electric usage from Saturday through Monday, I can see that I've used 64.24 Kwh less than the same period in the previous week. At Tier 4 Off-Peak Winter rates, that translates into a $17.53 cent reduction in my electric cost for those 3 days.

Now, I suppose I could fire up those machines again to run Bitcoin Utopia, but I seriously doubt that 64.24 Kwh of usage would generate $17.53 in benefits for S@h. In fact, I'm going to hazard a guess that it wouldn't even generate 80% of that amount. (I could certainly be wrong about that, but that's why I was asking my original question.) Frankly, I'd rather save my electricity (and the environment) and turn some of my savings directly over to S@h. So, using my 80% guesstimate, I'll put my money where my mouth is:

Your gift details… You gave to: SETI@home We received your gift of $14.00 via xxxxxxxxx on 11/19/2014. Your confirmation number is 139610.

My home machine are on because they are doing other tasks rather than purpose built to run SETI@home. If I was paying as much per KW/h as you. I would probably let mine run idle rather than run other projects. Running SETI@home adds ~8-9 KW/h a day to my usage. I have found running Bitcoin Utopia adds ~6-7 KW/h a day.
32) Message boards : Number crunching : Lunatics Windows Installer v0.43a Maintenance Release (Message 1602661)
Posted 8 days ago by Profile HAL9000
Can I run the installer on a fresh installation of BOINC before receiving any work?

So long at BOINC has been attached to the project everything should be OK.
33) Message boards : Number crunching : Seti + Virtual Box 7.4.27 (X64) Install Hangup (Message 1602660)
Posted 8 days ago by Profile HAL9000
I would expect it is VirtualBox being disagreeable on your system. On one of my server I use VirtualBox and has to roll back to an older version, 4.3.14, because the most recent version at that time was a bit broken.
34) Message boards : Number crunching : Panic Mode On (92) Server Problems? (Message 1602579)
Posted 8 days ago by Profile HAL9000
I've been waiting for someone to inadvertently answer my question...because it seems so obvious I'm afraid the answer is something I've simply overlooked. I'm almost afraid to ask it. So...I thought the SETI@Home MB database was much larger than the AstroPulse database. If so, why does the MB database seem fine where the AP database is not so fine?

Fair question. Just to get it out of the way - in BOINC terms (the bits we interact with - either through this forum or via our client processing), both MB and AP share the same MySQL database.

It's only at the science (Informix) database level that they're kept separate. I'd agree that in theory, the AP database should be smaller: the search has been running for a shorter time, and each 'tape' generates fewer WUs, with similar signal limits to the SETI search.

Reading between the lines of Matt's Technical News (Feb 16 2012), I'd suggest that certain limits have to be set by administrators when a database is first set up (the number of extents in a table, for example). Perhaps that has to be done to fit the amount of available disk space, or something. Perhaps the AP database was set up and configured - when it was young and small - to fit on a server with limited disk space. Since AP has been gaining a lot of attention recently, and the table sizes have been growing unexpectedly quickly, maybe they hit one of those in-house configuration limits sooner than expected?

I wonder if in newer versions of Informix some of these issues are easier to deal with. I would imagine the db software isn't changed often, but perhaps it could reduce some of their headaches. Looks like the most recent version was released this July.
35) Message boards : Number crunching : Best performing hardware (Message 1602548)
Posted 8 days ago by Profile HAL9000
SP / DP was to be my next question but that's been answered, so it looks like if you had the cash a Dual 18 core Xeon box with 2x Titan Z's would be the best bet?

Damn when I win the lottery I am defiantly building the worlds best home Seti box, something you can still run off the mains and use day to day I think, would be awesome getting to play with that kit and giving something back with all the power :)

You don't really need that much CPU oomph. An i5 or i7 with a pair of those GPUs would likely be in the top 15-20 computers for the project. The CPUs, in comparison to the GPUs, would only account for a small fraction of the work the machine completes.
36) Message boards : Number crunching : iGPU tuning (Message 1602547)
Posted 8 days ago by Profile HAL9000
When I installed my amd cards (2), they told me to first uninstall the igpu before installing. On my bios I can reinstall the igpu or so it looks like. If I do that and it works, how will that affect my gpu crunching and my cpu overclocking. I would like for the igpu to handle all of the daily screen work and have the amd's just working on wu's, but I don't want to see any downgrade in the gpu's or the cpu's. Will that work do you think? Thanks.

I still have no idea why you would be told to disable the iGPU & I have not seen any documentation about doing that before.
Using the iGPU for your general display shouldn't be an issue for CPU & the add-in GPU's processing. I have the iGPU enabled on my systems & only see slowdown issues while using the iGPU to process work.
37) Message boards : Number crunching : Seti fundraising via Bitcoin Utopia (Message 1602409)
Posted 8 days ago by Profile HAL9000
Milkyway gained over $3,000 in fundraising from Bitcoin Utopia. This has potential to be significant for the funding Seti needs.

That doesn't actually answer my question. If that $3,000 required more than $3,000 in electricity to generate it, then it's a net loss to the project (versus direct contributions equivalent to the electric costs) and environmentally costly at the same time.

So, to figure out if it's advantageous or not, it seems to me that there needs to be a way to come up with some sort of cost / benefit ratio for this kind of approach. Is there?

Different coin types have different profit/power expense ratios. BitCoins are not profitable to mine on CPU or GPU hardware any longer, but there other coin types that are. Bitcoin Utopia mixes various coin types in each Campaign

Since my hardware will be running other projects while waiting for SETI@home work anyway. Why not help out the project while it is offline or out of work.
38) Message boards : Number crunching : Seti fundraising via Bitcoin Utopia (Message 1602333)
Posted 9 days ago by Profile HAL9000
Bitcoin Utopia will be raising fundraising for Seti@home. Great news!

http://www.bitcoinutopia.net/bitcoinutopia/forum_thread.php?id=611

Excellent! I've already enabled Campaign #5 sgminer for my hosts.
39) Message boards : Number crunching : BOINC 7.4.27? (Message 1602186)
Posted 9 days ago by Profile HAL9000
Well, the most anoying change is that they changed the font being used and now the columns don't show up as nicely as I had them adjusted before... :(

Ralf

You could overwrite the boincmgr.exe with the previous one. The manager application is just a front end GUI to the client app boinc.exe.
40) Message boards : Number crunching : Best performing hardware (Message 1602182)
Posted 9 days ago by Profile HAL9000
So just a thought, what kit out there would perform the best for Seti?, Im not talking big clusters ect just specific pieces of hardware.

I would assume it would be some form of GPU but what about the Intel Xeon Phi cards for example?

I'm not looking to purchase just curious as to what the ideal Seti rig would be :)

I'm not sure that anyone has developed any SETI@home apps for the Xeon Phi hardware yet. However at the moment the best performance per watt would be doing work on GPUs. The type of work depends on which vendor hardware is the most efficient.
For SETI@home (MB work): NV GPUs using CUDA
For Astropulse (AP work): ATI GPUs using OpenCL
That isn't saying MB work on ATI GPUs or AP work on NV GPUs is bad.

In the NV range the 750ti seems to be the best PPW GPU. I have not seen enough reports on the new NV 900 series GPUs to know how well they preform at the moment.


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