Computer

Some code I have written:

• Here is an integrator for Ito stochastic differential equations, which implements several higher-order methods (with strong convergence) with fixed time steps. A sample driver program is included. Written in Fortran 90, updated 5/13/08. (.tgz archive or browse source)
• A portable random-number generator, which generates very high-quality random numbers that will be exactly the same on any machine that supports 32-bit integer arithmetic. Three modern algorithms are included and can be combined to give sequences with even longer periods. Written in Fortran 90, updated 4/19/07. (.tgz archive or browse source)
• A collection of FFT routines for parallel computation of 2D and 3D FFTs. Written in F90-style HPF, updated 7/18/03. (.tgz archive or browse source)
• A collection (module) of timing routines for Fortran programs, including facilities for printing the current execution time, triggering a checkpoint after some amount of time, and generating a Unix-style date/time stamp from within Fortran, including the day of the week (as well as a facility to calculate the day of the week from a date). Written in Fortran 90. (.tgz archive or browse source)
• A system to automatically disable AirPort before sleep under OS X, for LANL security rules.

Mac OS X Resources:

• Now gcc/g77 (sort of) work under OS X, thanks to the work of Stan Shebs and others at Apple. Some tips for compilation and binaries are posted here.
• The GNU Mac OS X Archive includes many compiled GNU software packages, ready to install.
• Fink is an automated software installer for OS X, to install packages like the GIMP.
• Instructions for porting Octave (a MATLAB-like numerics environment) to OS X.

General Macintosh Resources:

• An Info-Mac site.
• A database of used computer prices at UCE, and another one at everymac.com.
• A database of Apple product data sheets (including discontinued products).
• A database of Macintosh software conflicts.
• See the current IP address of Boris, my mac at home.
  

Macintosh News:

• Macintouch, the classic Macintosh news site.
• MacNN, another nice Macintosh news site.
• MacAddict.com and MacWEEK.com are other daily Macintosh news sites.
• The Powerbook Zone, powerbook-specific information.
• MacOS Rumors, more speculative news.
• AppleInsider, another rumor site.
• As the Apple Turns is a more humor-oriented news site.
• Accelerate Your Mac! is a news site oriented toward Macintosh upgrades.
• Slashdot is a more Linux-oriented news site, but with occasional Macintosh bits, especially now that OS X is out.

TeX/LaTeX:

• TeX/LaTeX implementations on the Macintosh.
• The OzTeX home page.
• A CTAN (Comprehensive TeX Archive Network) site. (You can also search the site.)

Numerics:

• Netlib repository, a collection of mathematical software and related information.
• The Guide to Available Mathematical Software (GAMS), provided by NIST.
• Another list of links for numerical software from JPL.
• The Numerical Recipes web site, and some reasons why you may not want to use them.
• Octave, a Matlab-like environment for numerical computations (for UNIX).
• Some Fortran-related links.
• A collection of free Fortran software.

Supercomputing:

• The homepage for seaborg.nersc.gov, the IBM SP RS/6000 supercomputer at NERSC. links.
• Information on hpmcount, a performance monitor utility that reads hardware counters for IBM SP RS/6000 computers.
• The vn.physics.ubc.ca PIII/Linux Cluster at the University of British Columbia, maintained by Matthew Choptuik.

Spam:

• An email address encoder to help foil address harvesters.