Posts by Jack Shaftoe

1) Message boards : Number crunching : Are there already Sandy Bridge Crunchers out there? (Message 1063961)
Posted 6 Jan 2011 by Profile Jack Shaftoe
Post:


I want the best for the buck.


Me too. But since I have to pay for a processor only once, but for my power bill every month, I think I will update my AMD Phenom II X4 965 in the near future to a Intel 2600K ;)


Keep in mind a new board for that CPU will likely start at around $250 vs AMD's at around $80...
2) Message boards : Number crunching : CUDA MB V12b rebuild supposed to work with Fermi GPUs (Message 1000043)
Posted 2 Jun 2010 by Profile Jack Shaftoe
Post:
Figure I'll discuss now that I see a few of you with Fermi running.

If you take a look at my host, I am using a 2 year old GTX 260 core 216. I checked a few GTX470 task results as submitted by Questor using 30.9 credit WU's as the benchmark.

http://setiathome.berkeley.edu/show_host_detail.php?hostid=5377581

Where he is getting them done in 152 to 174 seconds, my GPU takes 213 to 225 seconds. Hm, pretty good speedup there of about 25-30% for these small wu's.

I also poked through some of Todd Hebert's results. His 480 spinning through similar tasks at about the same rate as Questor's 470 - range of 155 to 181 seconds for him across 5 or 6 tasks that have been validated as similar 30.9 credit size.

http://setiathome.berkeley.edu/show_host_detail.php?hostid=5220505

Obviously too small of a data set to conclude anything yet and the app is still being developed to optimize, but just wanted to throw this out there. Might be useful to look at larger tasks, next time I have time and interest. :)
3) Message boards : Number crunching : Panic Mode On (32) Server problems (Message 998578)
Posted 24 May 2010 by Profile Jack Shaftoe
Post:
Oh I know. Just trying to share some nerd humor. :)

4) Message boards : Number crunching : Panic Mode On (32) Server problems (Message 998566)
Posted 24 May 2010 by Profile Jack Shaftoe
Post:
</PanicMode>

5/24/2010 3:17:52 PM SETI@home Backing off 1 min 0 sec on upload of 20fe07ae.....
5/24/2010 3:17:52 PM SETI@home Backing off 1 min 0 sec on upload of 20fe07ae.....
5/24/2010 3:17:52 PM SETI@home Backing off 1 min 0 sec on upload of 20fe07ae.....
5/24/2010 3:17:52 PM SETI@home Backing off 1 min 0 sec on upload of 20fe07ae.....

<PanicMode>
5) Message boards : Number crunching : Experience with opt CUDA versus stock CUDA on my ION (Message 996237)
Posted 14 May 2010 by Profile Jack Shaftoe
Post:
Morning Jack,
Have you tried putting a flops count in your app_info? It should bring your DCF way down and you will get a lot more work once the boys from Berkeley get this upload problem sorted out.


No, not yet. Can you share details on how to do this PJ?
6) Message boards : Number crunching : Experience with opt CUDA versus stock CUDA on my ION (Message 996234)
Posted 14 May 2010 by Profile Jack Shaftoe
Post:
Raistmer, can you confirm - stock app is just as fast as optimized app for cuda?
7) Message boards : Number crunching : Experience with opt CUDA versus stock CUDA on my ION (Message 996166)
Posted 14 May 2010 by Profile Jack Shaftoe
Post:
http://aftermidnight.dyndns.org/seti_cuda.jpg
8) Message boards : Number crunching : CUDA MB V12b rebuild supposed to work with Fermi GPUs (Message 996023)
Posted 13 May 2010 by Profile Jack Shaftoe
Post:
Note the hoses are at the top of the card - above where most cards end (the top of the slot).

I'm not suggesting cramming 4 of these in a single box, just that it's nice it doesn't cover up a perfectly good PCI slot like all the other ones do.
9) Message boards : Number crunching : Experience with opt CUDA versus stock CUDA on my ION (Message 996013)
Posted 13 May 2010 by Profile Jack Shaftoe
Post:
I just set my Network Activity to suspended so I could look at my results tomorrow. My card completes 1 MB every 25-40 minutes so I should have about 40 or 50 complete by midday tomorrow and can update you on number of failures.
10) Message boards : Number crunching : CUDA MB V12b rebuild supposed to work with Fermi GPUs (Message 996010)
Posted 13 May 2010 by Profile Jack Shaftoe
Post:
Go with an EVGA GTX480 Hydro Copper FTW*.


I like how their design reduces the card to a single slot.
11) Message boards : Number crunching : Experience with opt CUDA versus stock CUDA on my ION (Message 996007)
Posted 13 May 2010 by Profile Jack Shaftoe
Post:
The following are only two examples of many of not VLAR killed task from your CUDA. Typical "opt" crashes:


I don't blame the app for those, I was playing with EVGA Precision several times yesterday when overclocking my card.

Last week Mon > Thu would be a good time to analyze - was travelling for work and it ran the whole time.

Right now, I am looking at my BOINC Manager, 7 Cuda tasks finished. 6 successful, one killed after 4 seconds - most likely VLAR, and one running - 68% complete after 28min.
12) Message boards : Number crunching : Experience with opt CUDA versus stock CUDA on my ION (Message 995984)
Posted 13 May 2010 by Profile Jack Shaftoe
Post:
It probably depends on the card, driver and BOINC version you are using. I'm using a GTX 260, and optimized CUDA works quite well for me. The only crashing tasks for me are VLAR's.

However, I have experienced a few "your display driver stopped working" black screens here and there. That said - it doesn't seem to directly correlate with a crashed task - sometimes when I check BOINC after this happens I have no failed CUDA wu's in the list.

Using 197.45 driver. 6.10.43 BOINC
13) Message boards : Number crunching : Slow you down (Message 995344)
Posted 10 May 2010 by Profile Jack Shaftoe
Post:
Guilty conscience reporting in here. I find his posts unintentional humour - and wildly funny.


Amen. Same reason I enjoy the occasional PC vs. MAC threads. Watching people drop a bomb "PC's rool your face!" and then seeing other people scramble to defend their computer's feelings. :)
14) Message boards : Number crunching : GeForce 480 GTX and Seti (Message 995338)
Posted 10 May 2010 by Profile Jack Shaftoe
Post:
It is rather unfortunate that this board is not as friendly as it once was...I guess you are expected to wade thru the only one other thread I see on it...it only has 231 posts to wade thru. I am sure this extra thread is really clogging things up.
Now something like pendings has been gone over and over but I really don't think this topic has and I don't blame him for feeling dissed.
JMO


Isn't the GTX 480 considered to be really, really new? Therefore, if you pick one up and expect to crunch on it, perhaps it's reasonable to expect that you will have to do some homework first?

Maybe it's just me though, and it's normal to expect plug and play capability as soon as it launches. (shrug)
15) Message boards : Number crunching : Lunatics' Unified Installer v0.35 (Message 992508)
Posted 28 Apr 2010 by Profile Jack Shaftoe
Post:
Just installed the new version on my i7 and old P4. I did let the cache's run out on both, exited boinc and did the install. No problems at all. Thanks Lunatics, Great program.


Similar positive feedback from me. Love how it asks me which Nvidia drivers I am using so it gives me the correct app!
16) Message boards : Number crunching : i7 and hyperthreading (Message 992469)
Posted 28 Apr 2010 by Profile Jack Shaftoe
Post:
Thanks for clarifying my understanding guys. Preciate it.
17) Message boards : Number crunching : i7 and hyperthreading (Message 992457)
Posted 28 Apr 2010 by Profile Jack Shaftoe
Post:
Running down my cache to install latest optis and noticed something I didn't expect - I thought that the i7's were smart enough to use a full core for single threaded tasks if not all of them were being used.

Ex. Windows shows 8 cores in task manager. I am running 3 MB tasks. It uses 3 hyperthreaded cores (38% CPU) instead of 3 full cores (75%)

I am guessing my understanding is incorrect - and they haven't gotten to a point where it can dynamically switch between HT and NON yet. Yes?
18) Message boards : Number crunching : BOINC 6.10.48 DEVELOPMENT version released (Message 991429)
Posted 23 Apr 2010 by Profile Jack Shaftoe
Post:
Says it was released in March.

Version 6.10.19 - 6.10.44 ¶
released: 19 Mar 2010

New: Updated localization files
New: Added accessibility support for advanced view (Mac)
New: Added support for parsing username and password information from environment variables
New: Added ability to ignore specific GPU cards through the use of ignore device through the use of a configuration file option
New: Added ability to suspend BOINC's use of GPUs when certain applications are run through the use of a configuration file option
New: Allow new screen saver options to be configured via the OS specific configuration screen
New: Snooze GPU option off of the system tray menu
New: Adjust GPU activity settings via the advanced view activity menu
New: Added ability for a project to be specified as a "Backup Project" by setting its resource share to 0
New: Suspend computation of BOINC applications if CPU usage from non-BOINC applications exceeds a volunteer defined value (Defaults to 25%)
New: Support detecting SSE2, SSE3, and other forms of advanced instruction sets for older Windows machines (Windows)
Fix: Name resolution issues (Mac)
Fix: Activity Menu display issues (Linux)
Fix: Reduce CPU load in dealing with communications between manager and core client (Windows)
Fix: Properly display project descriptions on Windows XP machines in the attach to project wizard
Fix: Numerous CPU/GPU scheduling fixes
Fix: Numerous work-fetch fixes
Fix: Mac Installer for non-admin installs
Fix: Recover from crashes in Nvidia and ATI GPU functions (Linux, Mac)
Fix: Reap child processes spawned from a wrapper on Posix systems (Linux, Mac)
Fix: If a project supports ATI or Nvidia projects, display their icons in the project list
Fix: Show most commonly used preferences in use during startup via messages.

EDIT:: Oops, this is 6.10.44, you said 48... my bad
19) Message boards : Number crunching : Memory Leak? (Message 991415)
Posted 23 Apr 2010 by Profile Jack Shaftoe
Post:
Using McAfee, on 3 host's, I noticed it 'takes' quite a lot CPU-Cycles (8-16%!) for Online-Real-Time scanning. That is on my (T2400-HP-Laptop).


Wow, that is high. I'm using McAfee VS Enterprise 8, and it sometimes blips to 1% CPU useage, but most of the time is usually 0.

Did you set up exceptions in it, so it's not scanning your BOINC Data/Projects folder?
20) Message boards : Number crunching : i7 930 or 860? (Message 989110)
Posted 14 Apr 2010 by Profile Jack Shaftoe
Post:
It's just 2 different SATA controllers. Doesn't make much difference, but with only 2 devices I would be sure to put both of them on the same controller.


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