There is also a MinGW version of gfortran that is pretty easy to setup and install. FWIW here are the some details on getting it setup and running on Windows: NOTE: Some of the later configuration steps in that link are specific to the Zeus IDE and are only there to get Zeus to work with the gfortran compiler, so you can ignore those later steps. But the first few steps are just about getting gfortran installed and testing that the installation works. Then as you are using Sublime, it should also be possible to do some similar Sublime specific configurations to get it to work with the gfortran compiler. If you are not into HPC, you can try the gnu compilers, gfortran You can either download only gfortran, but as I can see the binary is a bit old Unofficial build of current development (GCC 5) source. Download the latest installer (dated 2014-06-29). It's very easy to use (basically, just click on the OK buttons), but some detailed info is also available.

• Intel Fortran Compiler Windows 64

These binaries work on Windows XP and later versions. Old download the whole gcc package.

Free Fortran Compilers There are a number of free Fortran 77 and 90 compilers available., which does not include a library and does not run under Windows XP.

Intel Fortran Compiler Windows 64

From the downloads page, download Mingw-builds TL.DR: Download link Version: If you do not have any reasons, select the latest Architecture: I guess you have 64 bit machine so select x8664 Leave the defaults for the rest Then you need to add the bin folder to the PATH. For windows 8.1, go to my computer right click - properties left side column - advanced system settings system properties - Advanced - Environmental variables Either on User variables for Username or System variables find on variable column a variable named 'Path' and click edit, if you cannot find it (for User variables for Username, on the system variables it has to be there) you can select New then on Variable name it should be 'Path' (without quotes ' ) Variable name: add the installation path with the bin at the end. For the default path.

C: Program Files mingw-w64 x8664-5.3.0-posix-seh-rtv4-rev0 mingw64 bin; Then, if you want to compile, open cmd (command prompt) on the folder you want, and type gfortran -o test.exe test.f90 Or you can make a file e.g.: compile.bat and inside type gfortran -o test.exe test.f90 pause -1 test.exe pause -1. Gfortran is significant slower compared to ifort. And in general GNU compilers compared to Intel's compilers (unfortunately) (according to my personal experience, on Intel's CPUs) Although, I cannot really answer because I never used it that much (e.g. I do not really know all possible optimisation flags.) If you google, you will find a lot of comparisons. And you can always try to run your own. But, are all these examples/is your code really optimised?

Here, (link below) they are making a nice comparison. However, it is up to you if you trust them or not. According to their results, both on Windows ( Windows + HPC??) and Linux, Intel's compiler is the fastest in the majority of cases. EDIT: Looking their flags for ifort: ( ifort -O3 -fast -ipo ): I would expect adding -xHost would improve performance even more - depending on the code.

But they are probably more experienced than I am./EDIT But, if you program needs a couple of minutes, as the majority of university's project, then this will make no real difference, so that's why I suggest GNU compilers. Also, it makes no sense to speak about speed when you are still learning. Another thing, which I read/heard somewhere, Intel's compilers are bad for beginners. Because, they at very clever in some cases, they might realise automatically fix an error and you might think that everything is good, but is not. (This is the reason I always say to compile with all debugging flags) (I remember this happened to me once with a simple cpp code, full debugging flags, it was running fine.

But then when I compiled with gcc, it found an error). If I see correctly, you are in a university. Why are you not using ifort on your own machine as well? 48 hours is not that short.

You can try on your own to compile and run it in order to time the difference. Also, sometimes compiling with different compilers, using debugging flags, might find you different bugs.

I guess when you make the CPU's you can understand them better. Also, the budget behind is much larger. (Someone once told me that gfortran is just a wrapper around gcc. I never found a reference so I do not know if this is/was true) Also, Intel's suite has a number of tools which can be proven helpful. Vtune for profiling. There's absolutely nothing wrong with gfortran for HPC (especially more recent versions), and for many people, the differences between it and ifort are probably small compared to the performance gains that could be garnered by writing better code.

If your code is already optimized and you have a large budget to buy compiler licenses, then start worrying about the small percentage improvements that a slightly better compiler can get you. In terms of performance differences, I've usually seen somewhere in the single-digit percentages for the code that I write.

Unfortunately, there aren't very many systematic benchmarks between the two compilers (see 1 or the fortran.uk link that another commentator gave for a couple of options, with varying results). It is worth noting that Intel's compilers do have decent auto-parallelization that can really boost performance, but if you're doing HPC, you're almost certainly writing your own parallel code anyway. What does make a large difference, in my experience, is using optimized math libraries.

The difference between using Intel's MKL and something like ATLAS can be huge. 1.

G95, Windows Download The G95 compiler binary from 2012 is available here. Jdk-1_5_0_07-windows-i586-p.exe download. Click the “g95-Mingw2012120” link below. This will download an executable.exe file which installs G95 for Windows.

G95 is a free open source Fortran 95 compiler. It implements the Fortran 95 Standard, some parts of the Fortran 2003 Standard and a few extensions.

In addition, G95 can compile code to the subset. The last stable version of G95, version 0.93, was released in October, 2012. In addition, a fork of the G95 source in 2003 provided the starting point for what is now known as. The Fortran Company is providing this download as a courtesy to the Fortran community.

We claim no ownership or responsibility for this program, use at your own risk and discretion. We provide no support for this tool and cannot answer questions about it’s use. G95 is no longer actively maintained so any issues you encounter will not be addressed. Click the “g95-Mingw2012120” link below. This will download an executable.exe file which installs G95 for Windows.