CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > CFX

CFX 5.7 on P4 2.4 and AMD Athlon 64 3000+

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 22, 2004, 13:44
Default CFX 5.7 on P4 2.4 and AMD Athlon 64 3000+
  #1
Dmitry Korshun
Guest
 
Posts: n/a
I did a small test to campare FX 5.7 on P4 2.4 (Intel 845, Win 2000) and AMD Athlon 64 3000+ (NVidia nForce 3, WinXP).

The task was about 100MB in RAM. It takes t1=34m 5.656sec on P4 and t2=26m 5.0 sec on AMD of CPU time.

If you make calculation 2.4GHz*(1+(t1-t2)/t1)=2.96GHz.

So we could see almost the same 3000GHz as the rating of the AMD CPU.

Solver said the options for CPU: For P4: intel_p4.sse2_winnt5.0) using the command:

C:\CFX\CFX-5.7\bin\perllib\cfx5solve.pl -stdout-comms -batch -ccl -

For AMD: (intel_k6_winnt5.1) using the command:

C:\CFX\CFX-5.7\bin\perllib\cfx5solve.pl -stdout-comms -batch -ccl -

Is it possible to obtain more power from AMD Athlon 64?
  Reply With Quote

Old   November 23, 2004, 01:15
Default Re: CFX 5.7 on P4 2.4 and AMD Athlon 64 3000+
  #2
deLuther
Guest
 
Posts: n/a
What precision do you use? Double or single? We tested AMD and got that in case of single precision results were comparable, but when we switched to double P4 was faster.
  Reply With Quote

Old   November 24, 2004, 13:03
Default Re: CFX 5.7 on P4 2.4 and AMD Athlon 64 3000+
  #3
Mikhail
Guest
 
Posts: n/a
i845 does not use dual memory channel technolgy, while athlon uses it. Try i875P or 865PE (eg from Asus).
  Reply With Quote

Old   November 25, 2004, 00:48
Default Re: CFX 5.7 on P4 2.4 and AMD Athlon 64 3000+
  #4
Dmitry Korshun
Guest
 
Posts: n/a
Single....
  Reply With Quote

Old   November 28, 2004, 11:45
Default Re: CFX 5.7 on P4 2.4 and AMD Athlon 64 3000+
  #5
Dmitry Korshun
Guest
 
Posts: n/a
I obtain a bit more power ath the same CPU frequency by playing a bit with RAM timings. Overlocking in addition CPU to 10%, I obtain in the same came calculation 3.22GHz agalogue comparing to P4 2.4 (see the first post)
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
amd athlon64 cpu and cfx 5.7.1 solver cmete CFX 3 October 20, 2005 23:16
CFX-5.7 and AMD Athlon 64 3000+ Alexey CFX 1 May 24, 2004 08:23
AMD Athlon 1000 and Asus A7V suitable for CFD? steve Main CFD Forum 22 March 5, 2001 12:50
AMD Athlon problems? Kenji Takeda FLUENT 10 December 15, 2000 01:36
AMD Athlon VS Pentium III sencal@hotmail.com Main CFD Forum 5 February 24, 2000 20:14


All times are GMT -4. The time now is 23:54.