| Index | Recent Threads | Unanswered Threads | Who's Active | Guidelines | Search |
 |
World Community Grid Forums
Category: Community
Forum: Hardware Chat Room
Thread: Single channel memory. Does it restrict crunching? |
| No member browsing this thread |
|
Thread Status: Active Total posts in this thread: 44
|
|
| Author |
|
|
Byteball_730a2960
Senior Cruncher Joined: Oct 29, 2010 Post Count: 318 Status: Offline Project Badges: 
|
Hey guys,
So I have a 2P Xeon V3 (2 x 12C/24T) cruncher which is currently running 4 sticks of ram ( 4 x 8GB). Out of the 32GB of ram, it runs at about 25% mem usage on Win 7. I have need of all that ram in another build and want to buy 16GB for this computer to replace it. Would I be severly bottlenecking my computer if I had only one stick of 8GB for each processor? It's easier to find 8GB sticks that 4GB sticks. I am running a Supermicro X10-SRi motherboard if that helps. Thanks! |
||
|
|
SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
My desktop runs on a single 8GB DDR3 strip and records > 99.5% efficiency on W8.1. Having 2 x 4GB or even possible 4 x 2GB on the Mobo is probably optimal, but seems to make imperceptible difference on single threaded crunching as what WCG has.
|
||
|
|
fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges: 
|
Single/dual/quad channel doesnt make any difference, neither does ram speed. Use any ram you have or whatever's cheapest.
----------------------------------------If it's a dedicated cruncher, you could look into changing to linux. Setting up ubuntu server is very simple and you'll get much better performance&points as well as lower ram usage.  |
||
|
|
enels
Senior Cruncher Joined: Apr 25, 2008 Post Count: 286 Status: Offline Project Badges: 
|
Maybe 48 threads would like 4 channels as opposed to 1. You could try some benchmarks by removing 3 pieces.
|
||
|
|
Byteball_730a2960
Senior Cruncher Joined: Oct 29, 2010 Post Count: 318 Status: Offline Project Badges:
|
Thanks so much for the replies guys. That is super helpful.
I am glad to see that I can go to single channel as it will make finding memory easier and cheaper for me. Fuzzydice555 - The currenct cruncher is my day to day computer, so I can't switch that to linux, but the new build will be dedicated and I'll put it on linux for sure. Is server a small footprint linux-based OS? Enels - I'd love to try that, but I am away and not able to physically access the computer for a few months, so can't try that out. |
||
|
|
fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges:
|
Yes, ubuntu server is basically ubuntu without the graphical interface.
----------------------------------------It is extremely lightweight, but you have to do everything with terminal commands. Setting one up to crunch is pretty easy though (3-4 commands at most), if you're interested I can write up the basics. |
||
|
|
KLiK
Master Cruncher Croatia Joined: Nov 13, 2006 Post Count: 3108 Status: Offline Project Badges:
|
Don't you have 8 RAM slots on your MBO:
----------------------------------------http://www.supermicro.com/products/motherboard/Xeon/C600/X10SRi-F.cfm :/ |
||
|
|
Aperture_Science_Innovators
Advanced Cruncher United States Joined: Jul 6, 2009 Post Count: 139 Status: Offline Project Badges: 
|
Just because there are that many slots doesn't mean they all need to be used. I have several quad-socket Opteron systems that are using 4 of 32 RAM slots because (aside from CEP2) they don't need that much RAM / memory bandwidth. The extra money that would be spent on RAM is better spent on faster CPUs instead.
---------------------------------------- |
||
|
|
SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
Holy smoke, 5.45 Tflops coming from Belarus
 (A walk and fall experience on use of just 2 slots in a laptop http://fossforce.com/2016/06/linux-hood-silence-ram/ under the title "Silence of the Ram") /ot |
||
|
|
Aperture_Science_Innovators
Advanced Cruncher United States Joined: Jul 6, 2009 Post Count: 139 Status: Offline Project Badges:
|
LOL I'm actually in the United States...I just go rotate countries every month or so
---------------------------------------- |
||
|
|
|