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bigadv VM on a 1090t - Page 3

post #21 of 40
Quote:
Originally Posted by PCCstudent View Post
Hmm. Jedi himself says "why don't you just use the windows client" when asked about use with an i7-920@4GHz. I was thinking it was the OS that was giving such a boost but now I see the cpu clock speed for a 28.00min 6901 has to be 4.5-8. So...

I will let myself down now and not be hoping for a big boost (but hopefully some) when the only action I take is a OS change. I do read that my rock solid Windows OC may not be so rock solid after an OS change. I thought a 28.00 min 6901 was to good to be true with the standard i7-920/930 4.0GHz overclock.

I will work with the idea of becomming familar with the OS as my goal, rather than hoping for a miracle. Smart money says use the Windows client and spend the time on something else.
Actually Linux 64 OS does give a boost in performance. On my duel boot machines Linux Ubuntu 10.10 installed alongside Windows. I gain about 1 1/2 minutes per frame with Linux over Windows. And yes it is harder to get your OC stable with Linux than Windows but it can be achieved. The easiest way is to just lower your OC a little I dropped both of my 980X rigs to 4.325Mhz and I am getting frame times of 18:30 on 6901 WU's With windows at 4.4Ghz the frame time was 19:54 so I am getting more PPD with less $$$ and heat.

The easiest way to install Ubuntu is to use Wubi it is the Ubuntu installer that installs it alongside Windows. If you go to the Ubuntu site the Windows Wubi installer is for 11.04. You can get the Wubi installer for 10.10 at this link if you want it. http://techie-buzz.com/foss/install-...e-windows.html
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post #22 of 40
OK Grandpa. 1.5 min is enough for me to invest a bit of time. In any case having a goal like this makes working with Linux a bit of fun. Perhaps you simply do not know but I will ask, I need to put my 955 back together and if Linux works even just the same amount better (or even equal) I will make a Linux smp rig using the 955. I know it would not make any sense if I was desperate for hardware to get some points made but I have everything for a 955 smp rig, how about I make it a Linux rig as sort of a test? no harm done in any case, agreeded? Like I mentioned I need to get into doing more with Linux for school and I simply need some motivation.Any guides that you know of for making a native Linux 4 core smp folder?
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post #23 of 40
It would be the same as a bigadv rig but I do not think that the a3 core is any faster on Linux than Windows but I have not tested it. ( I Guess I should ) I have only tested the a5 core with Linux and Windows I have run a3 core -smp on both but I really did not pay that much attention to the time frames. I will try to do a little testing tomorrow and see if there is a noticeable difference. And by the way if you choose to install Ubuntu 10.10 I think you will have to download the amd64 iso and burn it to disk then Wubi will install it from the disk. I do not believe there is a link from Wubi to 10.10 on line. But I am not sure. http://ubunturelease.hnsdc.com/maver...ktop-amd64.iso

Use this guide that desertrat left a link to in another thread for it installs the bfs scheduler which gives about a 10% boost in performance. http://hardforum.com/showpost.php?p=...&postcount=259 Step 11 in the guide usually is not required.
Edited by Grandpa_01 - 5/28/11 at 11:16pm
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post #24 of 40
Man that Ubuntu download takes a while (and I have 12Mbps down). It is easy to understand how the human brain (that is experienced with the symbols and syntax of English) sees a line of code,be it just about any code (I think html is the easiest) and completely locks up. I looked over the second link (the one that installs the "bfs" schedulered whatever that is (I probably know it is just leaving me for the moment) and it looks like just a mass of letters and symbols appearing and disappearing at random.

I really must start using what I must rather than what is comfortable.
Edited by PCCstudent - 5/29/11 at 8:12am
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post #25 of 40
The bfs scheduler sends the work to the cores the scheduler in Ubuntu 10.10 does not keep all of the cores 100% loaded 100% of the time the bsf does. Step 9 and 10 in the guide is installing bfs scheduler. Just copy and paste the commands into the terminal it is easier that way.
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post #26 of 40
I don't know if it's been talked about in this thread yet but make sure to install LINUX on the ext3 file system. If you don't it will take >45min to write to disk when the client finishes a bigadv WU.

If it has been discussed please disregard.
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post #27 of 40
Quote:
Originally Posted by brutis View Post
I don't know if it's been talked about in this thread yet but make sure to install LINUX on the ext3 file system. If you don't it will take >45min to write to disk when the client finishes a bigadv WU.

If it has been discussed please disregard.
No it has not been discussed since I was recommending the alongside install using Wubi, perhaps It should be mentioned though, If PCCstudent chooses to do a standalone install he should know that the ext4 file system takes an hour to write the file to hard drive upon completion of the WU before it sends it to Stanford.

If you use the alongside Windows with Wubi install there is no reason to use the ext3 file system the along side install uses the ntfs in combination with the ext4 file system and there is no problem with the 1 hour write time at the end of a WU, it actually only takes a couple of seconds with the alongside install. If you do a stand alone install then yes you should choose ext3 file system.
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post #28 of 40
Good to know that about Wubi.

Thanks Grandpa +1
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post #29 of 40
Quote:
Originally Posted by brutis View Post
Good to know that about Wubi.

Thanks Grandpa +1
Another thing that should be mentioned about Linux / Ubuntu is ram sped and timings make a very big difference more so than Windows. For instance on 1 of my 980X rigs I was running the ram at 1754Mhz 8-8-8-24-88-1T and the CPU @ 4.320Mhz and had a frame time of 19:20. About half way complete I switched the ram to 1926Mhz 9-9-9-24-88-1T only changing the memory multiplier and my frame times dropped to 18:33 for the rest of the WU. That is the largest drop I have had with just changing the ram timings / speed but I have played with all of my rigs and depending on how much I can raise the Mhz and drop the timings, I get and can mean between a -10 and -30 second time per frame.
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post #30 of 40
I don't mess with anything while a bigadv is running. Either the oneunit flag (v6.34) or the finish button is pressed (v7) first to let the WU finish

Back in late '09 on the 2p system I was running I pulled 4GB of memory out of it to put in the 4p I was building. The bigadv it was running was lost after restarting so that's why I'm very cautious when it comes to bigadv WU's.
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