Different results with -O0 -openmp or -O3 -openmp

Authored by Jack S.

Hi all, 

I developed a FORTRAN (F90) code (its a large model) with the following compilation flags :

ifort -g -O0 -openmp -openmp_report -threads -ipo

Last updated on 04/14/2014 - 10:44

Debug/release versions of .mod files

Authored by Simon B.

If I have separate debug and release versions of a Fortran module, the difference being solely one of compiler flags, will the .mod file differ between them?

Last updated on 04/14/2014 - 06:49

write(*,*) in function called by another write(*,*)

Authored by Simon


I used to put some "write(*,*)" in my code when I want quick and easy checks of what is happening.

Today I encountered an error while doing this with ifort :

Last updated on 04/14/2014 - 07:16

problem with openmp directives in gedit/emacs

Authored by Marios G.

Hello everyone,

Last updated on 04/15/2014 - 03:30

About ~/intel/ism/rm

Authored by John


I apologize in advance if this is the wrong forum for the question.

Last updated on 04/15/2014 - 21:05

Strange behavior in data assignment/output

Authored by Christoph N.


I'm sorry for this unspecific subject but it's hard to find a title for this problem. I have the following minimal example:

File: base.f90

Last updated on 04/16/2014 - 07:53


Authored by ereisch

The documentation is a little unclear on this, or perhaps I'm mis-reading it.  If I were to declare a variable as a POINTER, and then mark it as VOLATILE, is this marking the pointer as VOLATILE, o

Last updated on 04/16/2014 - 13:48

Illegal instruction on machine with AMD Jaguar processor

Authored by Gennady Fedorov (Intel)

Product : Intel® Math Kernel Library (Intel® MKL)Version : Intel® MKL 11.*  including and 11.2 beta

Last updated on 04/16/2014 - 22:47

stack overflow on 64bit server but not on 32bit notebook

Authored by Bill Y.

One of my recent tasks is to parallelize a fairly large program in Fortran 90. The subroutine I am targeting spends a great time doing a computationally extensive loop.

Last updated on 04/22/2014 - 03:22

Invitation to join the Intel® Software Development Tools 2015 Beta program

Authored by Steve Lionel (Intel)

Dear Developer,

Last updated on 05/02/2014 - 07:39