Compilateur Intel® Fortran

Free Intel Visual Fortran for students!

Intel Fortran is now available under a free, non-commercial license for qualified students on Linux, OS X and WIndows. See for more details.

Note: If you don't already have a supported Microsoft Visuall Studio installed, you'll need to get one first as the student license doesn't include the VS Shell-based IDE. The free Visual Studio 2013 Community Edition will do.

OS X 10.9 Xcode 5 error ld: library not found for -lcrt1.10.6.o

Environment:  OS X 10.9 (Mavericks) and Xcode 5.0

Command line compilations/links fail with "ld: library not found for -lcrt1.10.6.o"

Affected compiler:  Intel Composer XE 2013 Update 1

Root cause:  Xcode 5.0 installation does not install all command line tools (include files, libraries, SDKs) need for the compiler to link user applications. 

Оптимизировали, оптимизировали, да не выоптимизировали!

Оптимизация? Конечно, каждый сталкивался с данной задачей при разработке своих, сколь-нибудь значительных, требующих определённых вычислений, приложений. При этом способов оптимизировать код существует огромное множество, и, как следствие, различных путей сделать это в автоматическом режиме с помощью опций компилятора. Вот здесь и возникает проблема – как выбрать то, что нужно нам и не запутаться?

can build a DLL, but cannot run it on another pc

I have built a very simple DLL using Intel fortran.  I can successfully call a routine in it from an Excel visual basic macro on my own computer, but not on another computer.  I get a message about "file not found" and "error 53".

I think the right compiler options are what I'm looking for.  Can anyone tell me what I need to do?

So far I'm doing everything with 32 bit options, and Excel is a 32 bit version.  Once I get this working, I want to get it working for 64 bit Excel.




Runtime issues in legacy multiple entry subroutines

Hi, I am in evaluation mode of your product on Windows and OS X. I am trying to get some legacy FORTRAN IV code running and I have issues with existing multiple entry point subroutines. Here is a basic sample that has the problem I am having: 

       CALL ENTRY1(I,A,B,C) 

How to tame the ancient arrays?

The description of problem: I have a very old subprogram which was written for Microsoft Fortran v.5 (DOS, pre-windows era). There are two arrays in program code. The dimensions, the array specifications are (35,40) and (37,38). The program code was written so that it assumed that all elements of array specification that less than 1 are computed, but their values are equal 0. In Intel Fortran, the elements of array specification that less than 1 are computed with the own values. As result, the two summations give two different results of computing compared MS-Fortran and Intel Fortran.

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