Class Information: 2018

Fortran 95 compilers

The most convenient way to do the exercises might be on your own computer after installing a compiler. The main choices are listed below. gfortran is the most universal/popular, is completely free and can be used on Windows, MacOSX or Linux. For Windows, the silverfrost compiler seems to work well: this is free on your own computer, but on an ETH-owned machine it would be necessary to buy a license. Possibly the best compiler is the one by Intel, which works on Windows, MacOSX and Linux. ETH has a site license for it that employees can use, but unfortunately this isn't available for masters students. A drawback is that your computer must be networked so it can connect to the central ETH license server.

gfortran: Developed by the GNU, the free software foundation. See

silverfrost (for Windows): free for personal use, download from

Intel Fortran Compiler: ETH employees (e.g. doctoral students) can download from - it is included in the Intel Studio XE package. Documentation here.

Useful editors that highlight Fortran syntax: emacs or xemacs (unix-based); for MacOSX: aquamacs (here)

Free resources on the internet

1. A manual. A good one is the Intel Fortan Language Reference Manual.

2. Tutorials

3. General information and/or pages of links to relevant sites

4. Unix tutorials

Topics to be covered

Class schedule and handouts (including exercises)

Fortran Topics Numerical Topics Download
1 (24.09) History, basics, simple programs   Class1.pdf
2 (01.10) More basics, interactive I/O, do loops, functions&subroutines Finite differences Class2.pdf
.. (08.10) NO LECTURE    
3 (15.10) Modules, ascii file I/O, Array functions, assumed size arrays. 1-D diffusion equation Class3.pdf
4 (22.10) Precision, namelists, formatted I/O. 2-D diffusion equation. Class4.pdf Input file
5 (29.10) Derived types. Binary I/O. Keyword&optional arguments. where, forall. Character string manipulation. Streamfunction. Upwind advection. 2-D advection-diffusion. Class5.pdf
.. (05.11) NO LECTURE    
6 (12.11) Recursive functions. Iterative & multigrid solvers. Jacobi & Gauss-Seidel iterations. Program 2D Poisson solver. Class6.pdf Vcycle.f90
7 (19.11) Writing fast code (optimisation). Convection (2-D, infinite-Pr). Class7.pdf
8 (26.11) Makefiles. Pointers. Generic procedures, operators and overloading.   Class8.pdf
9 (03.12) Parallel computing. Finite (low) Prandtl number convection. Class9.pdf
10 (10.12) Libraries. Implicit timestepping. Class10.pdf
11 (17.12) Review. Fortran 2003&2008 features, discussion.   Class11.pdf