CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Pentium III and CFD

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   March 20, 1999, 01:04
Default Pentium III and CFD
Allan morrison
Posts: n/a
Does anyone have thoughts on the increased graphics capability of the PENTIUM III as applied to CFD?
  Reply With Quote

Old   March 20, 1999, 10:54
Default Re: Pentium III and CFD
Gassan Abdoulaev
Posts: n/a
Conventional CFD is first of all floating-point number crunching. In this aspect, is Pentium III as good as for instance, Dec Alpha?

  Reply With Quote

Old   March 26, 1999, 12:49
Default Re: Pentium III and CFD
Tim Cowan
Posts: n/a
A good comparison for gauging this is to look at the SPECfp ratings for each machine. You can try to get SPECfp statistics for just about every machine out there. However, the only reliable way to ultimately gauge the performance you will see is to benchmark the specific code you are using on each machine. The results will vary depending on your algorithm and compiler type/options. We have done extensive benchmarking with our own CFD code here and have found that the relative results usually follow the general trend of the SPECfp ratings. Our ratings show that the Pentium II 450 is about as fast as the DEC Alpha 20264 450. However, the newest DEC ALpha 21264 (or EV6) is quite fast...about twice as fast. Note that the performance on all of these machines will be degraded if your problem is too large to be solved in core memory. We have found that when the code starts disk caching your run times start to double or even quadruple, hence a SPECfp rating is meaningless if your code is inefficient with memory allocation or your machine has very little physical RAM. For these types of problems, IBM workstations are far superior as they have extremely efficient disk IO.

Hope this helps...
  Reply With Quote

Old   April 15, 1999, 12:24
Default Re: Pentium III and CFD
steve podleski
Posts: n/a

I'm looking for PC to do 3-D mesh generation and run a flow solver (NPARC/WIND). I'll take your advice and checkout but do you have more advice on min RAM, hard drive, graphics card, PC manufacturer, etc.
  Reply With Quote


Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Student Guide for CFD - Vol III, Hoffmann CODES Amir Main CFD Forum 0 August 9, 2007 07:09
Choice of Platform Athanas Koynov Main CFD Forum 12 February 9, 2001 16:34
Where do we go from here? CFD in 2001 John C. Chien Main CFD Forum 36 January 24, 2001 22:10
cfd workstation selection:PIII vs Athlon Bob Harries Main CFD Forum 0 June 20, 2000 15:05
AMD Athlon VS Pentium III Main CFD Forum 5 February 24, 2000 20:14

All times are GMT -4. The time now is 21:34.