Posted 420 days ago by
Tony Stark
4 hours and counting...
Posted 429 days ago by
Tony Stark
Yeah. I finally just wrote a script to manually update the project periodically.
Change the Timeout parameter (seconds) to suit your needs.
CHDIR C:\Program Files (x86)\BOINC
:BEGIN
boinccmd --project http://milkyway.cs.rpi.edu/milkyway update
TIMEOUT /T 900
GOTO BEGIN
Posted 462 days ago by
Tony Stark
I.e. under "Team Challenges" http://boincstats.com/bam/challenges.php
or
"Project Challenges" http://boincstats.com/stats/challenges.php
on the left side navigation frame.
Posted 463 days ago by
Tony Stark
Wonder if the current situation is related to the challenge, or coincidence? It's been blissfully rock solid for many weeks now.
Posted 469 days ago by
Tony Stark
In case you're curious, here's the rundown on the various ATI GPU capabilities
https://secure.wikimedia.org/wikipedia/en/wiki/Comparison_of_AMD_graphics_processing_units#Northern_Islands_.28HD_6xxx.29_series
Posted 496 days ago by
Tony Stark
... I'm not talking about increasing WU limits, because in my experience, we're clearly not in danger of reaching them (I believe its at 40 per GPU?) Much of the time my client is living hand to mouth, often getting only one WU, finishing it, then getting one more, ad infinitum. Other times, it just runs dry.
Mystery solved. It seems that this behaviour only occurs when i set my additional work buffer to 1 day or less. I set it to 5 days and voila! 20 WU's instantly. The WU cap of 20? = .014 days for a 6950, so i would expect any setting above that to keep me full. Somethings funky here.
Anyhoo... keep up the good work!
Posted 496 days ago by
Tony Stark
I've been biting my tongue on the work availability issue, because the server is so blissfully stable.[ thanks guys !]
2/8/2012 9:41:25 PM | Milkyway@Home | Sending scheduler request: To fetch work.
2/8/2012 9:41:25 PM | Milkyway@Home | Requesting new tasks for ATI GPU
2/8/2012 9:41:29 PM | Milkyway@Home | Scheduler request completed: got 0 new tasks
2/8/2012 9:41:29 PM | Milkyway@Home | No work available
This isn't really a shock to me because I see that our global throughput has yet to peak. (0.7 Petaflops and counting :-) It does make me curious, though, as to whether is it possible to assess just what percent of requests for work are going unfilled by analyzing server logs, etc.
NOTE: I'm not talking about increasing WU limits, because in my experience, we're clearly not in danger of reaching them (I believe its at 40 per GPU?) Much of the time my client is living hand to mouth, often getting only one WU, finishing it, then getting one more, ad infinitum. Other times, it just runs dry.
In short, how close (or far) are we to having work supply keep up with demand?
Posted 508 days ago by
Tony Stark
Abnahme Kern-und Speichertakt. Stellen Sie außerdem sicher, sie sind cool. Get neuesten Treiber ...
Posted 514 days ago by
Tony Stark
An even sweeter spot is an HD6950 2GB which unlocks to the full HD6970 shaders.
Touche'. I looked for an unlockable reference design, but all the feedback (from Newegg in the States) left me unable to be sure I'd found one that was. Have you bought one recently that you've personally successfully unlocked?
Posted 514 days ago by
Tony Stark
If you're going for an ATI/AMD card, the work has already been done for you. Just find the most GFLops for your dollar. You'll find all the details here:
https://secure.wikimedia.org/wikipedia/en/wiki/Comparison_of_AMD_graphics_processing_units
Note that even for a particular model, speeds will depend somewhat on what clocks speed and power limiting you use. For what its worth, I think the current sweet spot is the Gigabyte 6950 1GB: $240USD for a theoretical 2200 GFlops (single precision - double is around 500) I run them at 900MHz clock and +20% power and they generally do MW tasks in about 63 seconds.
Happy crunching!
Posted 516 days ago by
Tony Stark
Since the new server, the MW throughput has been steadily rising. Yay! Having just passed the 1/2 Petaflop point a day or two ago, I decided it counted as a milestone. I'm saving some champagne for when we make it all the way! :-)
Here's an interesting chart of the Moore's law march of computing power. Crunch on!
http://en.wikipedia.org/wiki/FLOPS#Cost_of_computing
Posted 518 days ago by
Tony Stark
AMD Radeon HD 6800 Series (Sapphire/PCPartner)
1/14/2012 8:00:42 PM | Milkyway@Home | Message from server: An ATI GPU supporting double precision math is required
Other projects are utilizing my 6870 just fine just so ya know.
Your 68xx card does not have double precision.
The other projects don't need double precission.
From the 6000 series you would need a 69xx to run MW on it.
See the GPU requirement thread in the number crunching section for more info.
What he said. Here's a page laying out ALL the ATI cards deatails, including which has DP, in nice easy to compare charts.
http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units#Northern_Islands_.28HD_6xxx.29_series
Posted 523 days ago by
Tony Stark
Just a little bit of optimism for the day... While there may be some work generation issues, I note that the project GFlops is approaching 400K, which is the highest I remember ever seeing it, so we're going in the right direction. Hurray for the new server! :-)
Posted 529 days ago by
Tony Stark
With the new server I updated the scheduler to correctly check for the OpenCL double extension rather than just checking the hardware; however only the most recent (and possibly unreleased) clients send back the supported OpenCL extension, so almost no Nvidia/OpenCL tasks are being sent out. I'll fix it soon.
Well, fwiw, I seem to get GPU task VERY sporadically, and when it does, it's usually only one (70 second) task. Came in to find it with no GPU tasks at all this morning...
Posted 534 days ago by
Tony Stark
And why the work units are only 6 seconds? Thant`s stessfull...i dont`have enough work for my PC!
Patience, my friend. A new server is coming online in the next week or two, so this should change. Happy new year.
Posted 539 days ago by
Tony Stark
All together now... hurrah! :-)
Posted 541 days ago by
Tony Stark
Is it really out of work or is something wrong again? :(
Well, the numbers right now don't look good - as many waiting for validation as in progress can't be a good sign.
Tasks ready to send 1
Tasks in progress 101,758
Workunits waiting for validation 94,181
Workunits waiting for assimilation 326
Workunits waiting for file deletion 0
Tasks waiting for file deletion 0
Transitioner backlog (hours) 0
Posted 543 days ago by
Tony Stark
Another (thorough) review...
http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/49646-amd-radeon-hd-7970-3gb-review.html
Posted 561 days ago by
Tony Stark
NEW SERVER SPECIFICATIONS:
Memory: 64GB Memory (8x8GB), 800MHz 2R LV RDIMMs at Std Volt for 1 Proc, Optimized
Processor: Intel® Xeon® X5647 2.93GHz, 12M Cache, 5.86 GT/s QPI, 4C
Nice CPU choice. However, thats an strange number of DIMMs for a triple channel cpu, unless you've picked one of those entry level boards (like the TYAN S7002AG2NR) that has 8 slots (3+1 per CPU.) On the other hand, that board requires both CPU's to be popluated in order to utilize all 8 slots, and you only mention one here. Are you going dual cpu (not core) or single? For that matter, what motherboard are you using? Looking forward to the new arrival! :-)
Posted 566 days ago by
Tony Stark
We've determined that the SQL database is melting down...We are in the process of ordering a new server...
Excellent! This will, no doubt, make for a bunch of happy crunchers.:-) I'm guessing the hardware nerds among us would also love to hear the specs once the deed is done. My only $.02 (USD) is that there's no such thing as too much memory for a database server; think an order of magnitude > than the current machine. Fingers are crossed...
Thanks and keep up the good work.
-Tony