CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > General Forums > Hardware

Latency vs bandwidth

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   August 1, 2018, 11:19
Default Latency vs bandwidth
  #1
Senior Member
 
Simbelmynė's Avatar
 
Join Date: May 2012
Posts: 548
Rep Power: 15
Simbelmynė is on a distinguished road
So I have gone balls to the wall with my old 7600k (@4.7 GHz) and purchased a 4000 MHz Samsung b-die memory kit. Obviously I forgot to check if my ageing motherboard managed that frequency (it did not). The positive aspect is that I managed to run it at very aggressive timings @ 3466 MHz


@3333 MHz (13-13-13-33) my system managed to run the benchmark at 265 seconds.
@3466 MHz (14-14-14-34) it finished at 264 seconds.


(both a rather sizable difference compared to the 2400 MHz (15-15-15-36) memory I hade before when it finished at 321 seconds)



My question is what we should try to go for in terms of CFD? Is bandwidth the king or do we have enough random reads that latency is important as well? I am a bit confused right now by the results.
Simbelmynė is offline   Reply With Quote

 


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
CFD workstation - memory bandwidth fusij Hardware 17 December 20, 2016 15:10
Memory bandwidth and memory interleaving Sly Hardware 2 February 19, 2015 13:41
Choosing RAM frequency vs latency ? TMC Hardware 2 July 12, 2013 19:02
how to do bandwidth reduction using gambit gambituser FLUENT 9 January 31, 2010 12:52
Bandwidth and Iterative Solvers cfd101 Main CFD Forum 0 September 9, 2005 12:05


All times are GMT -4. The time now is 13:50.