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

Fortran compiler for Linux cluster

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 9, 2002, 05:01
Default Fortran compiler for Linux cluster
  #1
Jan Rusås
Guest
 
Posts: n/a
Which Fortran compiler do you use for your Linux cluser? and which would you recommend Thanks in advance Jan

  Reply With Quote

Old   October 9, 2002, 08:55
Default Re: Fortran compiler for Linux cluster
  #2
cfd guy
Guest
 
Posts: n/a
I've heard that you need the Portland compiler. It is quite expensive.
  Reply With Quote

Old   October 9, 2002, 09:28
Default Re: Fortran compiler for Linux cluster
  #3
Michael Bo
Guest
 
Posts: n/a
The CFX Community pages says GCC could do the job
  Reply With Quote

Old   October 9, 2002, 09:39
Default Re: Fortran compiler for Linux cluster
  #4
Michael Bo
Guest
 
Posts: n/a
....if you intend to run cfx-5 (and only single precission), otherwise portland is necessary when running cfx-4
  Reply With Quote

Old   October 9, 2002, 09:59
Default Re: Fortran compiler for Linux cluster
  #5
Jan Rusås
Guest
 
Posts: n/a
I have hear the same and also that it should be very expensive. That was the reason why I would like to know if anyone has found another solution. But what is expensive? and do I only need one for a cluster? Jan
  Reply With Quote

Old   October 9, 2002, 10:01
Default Re: Fortran compiler for Linux cluster
  #6
Jan Rusås
Guest
 
Posts: n/a
so for cfx5 double precission portland is the only option.

So the situation is that the price on the fortran compiler could determine which CFD software to use!!!!
  Reply With Quote

Old   October 9, 2002, 12:45
Default Re: Fortran compiler for Linux cluster
  #7
cfd guy
Guest
 
Posts: n/a
Or which precision you want to solve your problem.

  Reply With Quote

Old   October 10, 2002, 03:48
Default How important is the precision on CFX5
  #8
Jan Rusås
Guest
 
Posts: n/a
I have seen cases for CFX4 where it was important if singel or double precision was used. How sensitive is CFX5 to this? (Probably not possible to give an clear answer to)
  Reply With Quote

Old   October 21, 2002, 10:47
Default Re: Fortran compiler for Linux cluster
  #9
Neale
Guest
 
Posts: n/a
The Portland Group Compiler costs about $500US. This is a bit pricy, but no different than any other commerical compiler for Linux. IMO it's probably the best quality commerical compiler for Linux (Absoft would be a close second).

As others have mentioned you can use g77 as well, but then you can't run double precision. The reason for this is that g77 does not have auto promotion compiler flags. i.e. flags that auto promote REAL data to DOUBLE PRECISION.

If you are running transient calculations for a very long time, or you are running grids that have very large aspect ratio cells, then you might need double precision, otherwise, for the most part, single precision should be fine.

Neale.
  Reply With Quote

Old   October 31, 2002, 08:50
Default Re: Fortran compiler for Linux cluster
  #10
Jan Rusås
Guest
 
Posts: n/a
Thanks for your answer Neale,

but the 500$ you mentioned, I guess they are just the anual fee for one license, there are also som initial cost which are much higher (((

regards Jan
  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
Intel Fortran Compiler & Tutorial 17 Young CFX 1 March 30, 2011 02:39
Fortran Compiler and example Young CFX 1 March 22, 2011 23:26
OF 1.6 | Ubuntu 9.10 (64bit) | GLIBCXX_3.4.11 not found piprus OpenFOAM Installation 22 February 25, 2010 14:43
Fortran compiler Erik Siemens 2 November 28, 2008 21:05
Fortran compiler Arnab Siemens 5 September 14, 2004 04:59


All times are GMT -4. The time now is 07:50.