| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Community
Forum: Teams
Thread: Minnesota Crunchers |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 6194
|
|
| Author |
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have a question, running Ubuntu 11.10 64 When I hook my new monitor up through dvi, my wireless network adapter don't work. but when I hook up my monitor through vga my wireless network adapter works just fine. any ideas whats going on? Sounds like it could be an IRQ conflict or other low-level issue. Try moving the video card and/or network adapter to different slots if possible. Otherwise you might be able to resolve the conflict with BIOS settings. |
||
|
|
Bearcat
Master Cruncher USA Joined: Jan 6, 2007 Post Count: 2803 Status: Offline Project Badges: 
|
Kate, not sure if you read my post in the GPU forum. You were looking at the 7750 being a double precision card. I don't think it is, according to this....
----------------------------------------http://www.amd.com/us/products/desktop/graphi.../Pages/radeon-7750.aspx#2 . Unless I'm reading this wrong. From what I could find, only the 7900 series is double precision.
Crunching for humanity since 2007!
 |
||
|
|
swiftmallard
Advanced Cruncher Joined: Apr 6, 2010 Post Count: 115 Status: Offline Project Badges: 
|
The HD7750 is indeed capable of double precision. From the above link:
AMD App Acceleration2 Supports OpenCL™ 1.2, DirectCompute 11 & Microsoft C++ AMP Double Precision Floating Point Another source of info is here: http://en.wikipedia.org/wiki/Comparison_of_AMD_graphics_processing_units |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
Thanks, Bearcat and swift mallard.
----------------------------------------I have received the 7750 card but haven't installed it yet (hope to have time this weekend). I'm replacing an Nvidia GT 430, so will have to be careful in changing to AMD drivers. I decided to wait until Xubuntu 12.04 was available (yesterday) and do the whole OS update while I was at it. I'll let you know how it turns out. I've heard that the 7750 is very slow at double precision computation (probably why the AMD web page Bearcat found gives Gflops only for the single precision!).  |
||
|
|
Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have to find a replacement at work for Ubuntu 10.10 now that it is out of support. So I installed 12.04 on my work computer to try it out. I still don't like it but I need a stable and long term replacement. Mint 12 was locking up xorg all the time, at least twice a day.
----------------------------------------So I got it installed and right out of the box boinc is broken. I would not attach to anything without crashing the boinc mgr. I comes with 7 dot something of boinc. And unity is still a steaming pile as far as I'm concerned. But I guess I can get used to anything. <sigh>  At least I'm getting no more gui lock ups with this distro.  One thing I really miss in Mint is able to do a cntl-alt-backspace to restart X. Is there any way to get that back in Ubuntu 12.04?  [Edit 1 times, last edit by Former Member at Apr 28, 2012 12:09:19 AM] |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
Hi Brink,
----------------------------------------I'm about to give Xubuntu 12.04 a whirl (from a thumb drive, so I'm not committing to anything yet!). I've been using Xubuntu 11.10 for several months on two of my machines at home, and I like it very much. No Unity! Yay! While still retaining the convenience of the Ubuntu repositories. I haven't had any trouble with BOINC in 11.10. Will let you know what happens with BOINC and 12.04. My main crunching machine is still running 10.04. I want to swap in my new AMD 7750 graphics card for the Nvidia GT 430 currenty in it, as I'm doing some OpenCL development and want to make sure my stuff runs ok on ATI cards as well as Nvidia. If Xubuntu 12.04 passes muster on the thumb drive, then I'll install it on this cruncher. I figure since I have to uninstall Nvidia drivers and install ATI drivers anyway, I might as well go whole hog and upgrade the OS too. |
||
|
|
Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7663 Status: Recently Active Project Badges: 
|
Hi Brink and kateiacy,
----------------------------------------Keep us informed. I have been running Mint 11, but that will be out of support soon if it is not already. So far it has been rock solid. I really hate having to to do any upgrades. I am not too smart about Linux, but so far Mint has made it easy. If Xubuntu is just as easy I may have to give that a try. Cheers
Sgt. Joe
*Minnesota Crunchers* |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
OK, I booted into Xubuntu 12.04 from a thumb drive and successfully installed BOINC. Xubuntu has a lighter-weight GUI than Ubuntu itself, which means that many of the libraries and utilities that come along automatically with a Ubuntu install aren't included with Xubuntu. The only downside that I've found with that is that, when you go to install a package, often there are tons of auxiliary libraries that have to be installed to make it work. Luckily this is done automatically, but it makes the installs take a while. So when I went to install BOINC, it said 254 files would be downloaded. It took a while, but it worked.
----------------------------------------The version of BOINC that is in the repository (same as for Ubuntu 12.04) is 7.0.24. Odd choice since 7.0.25 is the current stable version from Berkeley. I've been running 7.0.25 for a couple weeks on two of my machines and it seems ok. Anyway, back to the Xubuntu venture. BOINC installed without a hitch (just took a while with the 254 downloads) and I had no trouble attaching to WCG and getting WUs. I let one run for a few minutes and it seemed ok. The only oddity was that some of the menus that should run across the top of the BOINC manager didn't appear. I didn't try attaching to any GPU BOINC projects because I haven't installed the proprietary drivers on the thumb drive. I did this test on my AMD FUsion netbook. I want to also try the thumb drive in my machines with Nvidia, so don't want to put on proprietary ATI drivers. Tomorrow I'll install BOINC 7.0.25 over the 7.0.24 installation and see if that fixes the issue with the menus. I've installed 7.0.25 on top of 7.0.15 on other machines, so I think this should work ok. Hopefully they'll get 7.0.25 into the repository soon. Another option if you want Ubuntu without Unity is install the regular Ubuntu but then install the XFCE or LXDE GUI. I did that with one machine when 11.10 came out; had some minor issues and decided to just go with Xubuntu. But I might try it again, as it's nice to have all the libraries, compilers, etc. that come with the entire Ubuntu. |
||
|
|
kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
|
Well, the night before last the hard drive in my main cruncher failed. (It was one of the OCZ Vertex that several of us had purchased with a rebate about 15 months ago. It had been used 24/7 ever since.)
----------------------------------------Anyway, yesterday I not only had the Nvidia GT 430 replaced with the new AMD HD 7750, but also replaced the hard drive and installed Xubuntu 12.04. So far I couldn't be happier. The 7750 definitely is double precision. It runs Milkyway about 3 times as fast as the GT 430 did (still slow, but a BIG step up for me). One the single-precision front, on POEM, it's about 6 times as fast as my AMD 350. I get a little box in the lower righthand corner of my screen that says "Unsupported AMD hardware." I guess that's because the card is so new that the driver doesn't recognize exactly what it is. But I'm not concerned since everything runs ok. I read on the BOINC webpage that there were no changes in the Linux versions from 7.0.24 to 7.0.25, so I haven't bothered to overwrite 7.0.24 (installed from the Ubuntu repository) with 7.0.25. The only wierd thing is that some of the pull-down menus (Tools, Activity, etc.) don't show in the BOINC Manager. I can access them with Alt-T, Alt-A, etc. so it's no big deal. Otherwise I have had no problems so far with this version of BOINC. By the way, with this version of BOINC, in order to get BOINC to recognize the AMD GPU, I no longer have to put the extra lines from Skip DaShu's web page into the boinc-client script. I do still have to manually restart BOINC after rebooting. What kind of runtimes do you folks with fast AMD cards get for Milkway and POEM? I read somewhere (need to find that site again) that the 7750 is the most efficient GPU on the market right now with respect to FLOPS per watt. I hope that's true!  So far I would highly recommend it for someone looking for a crunching GPU that is inexpensive both to purchase and to run (unless they're looking for big points).Now just waiting for WCG to do a GPU beta on Linux!  |
||
|
|
Bearcat
Master Cruncher USA Joined: Jan 6, 2007 Post Count: 2803 Status: Offline Project Badges:
|
My ATI 6950 is completing milkyway wu's 1 min 47 seconds. Might have to consider that card. Not sure why AMD's web site doesnt list it as a double precision like it does the 7900 series. The 7950 prices have dropped under 400 bucks. With nVidia coming out with another card, maybe they will drop more. How much did you pay for the 7750?
----------------------------------------
Crunching for humanity since 2007!
|
||
|
|
|