Updated 2017-08-01 to fix typo and use new demo URL. Also note that the Homebrew package manager has matured since this post was first published in 2012. Once you’ve configured Homebrew, installing a tool like wget is as simple as running brew install wget wget is an incredibly useful GNU tool on Linux. Unfortunately, it […]
Mac OS X hack: download multiple files with curl Read More »
OpenFOAM is a notoriously difficult piece of software to compile, install and run. OpenCFD (the authors of OpenFOAM) have chosen to require the use of recent versions of gcc that are not available on most stable enterprise-class systems (ie Red Hat Enterprise Linux). To make things worse, until recently, OpenCFD also bundled a large number
An Improved Ebuild for OpenFOAM on Gentoo Linux Read More »
UPDATE A new version of GROMACS (4.6 series) has been released since this post was written. Please try installing the latest version of GROMACS before attempting the steps in this post. Fixing GROMACS There is a bug in the do_dssp command in GROMACS 4.5.5 that prevents the analysis of secondary structure using DSSP . Attempting
Run DSSP with GROMACS 4.5.5 on Red Hat Linux Read More »
I’ve added a Python 3 XML example to my Shocksolution_Examples repo on GitHub. The new example shows how to generate an XML file which functions as a template for building a GUI with wxGlade. However, this example should be helpful for anyone who needs to create XML files with Python. The full example is on
Tricks for Writing XML with Python 3 Read More »
The Problem I ran into what was probably the strangest error I have ever encountered as a Linux admin. I created a fresh CentoOS 6 virtual machine (VM) using VirtualBox on my OS X Mountain Lion system. To my great surprise, I was only able to access Google and a handful of other web sites
Firefox in CentOS/Fedora/Red Hat Enterprise Linux can only access Google Read More »
CFD-ACE+ is a multiphysics and computational fluid dynamics (CFD) simulation tool that was originally developed by CFD Research Corp. and is now distributed by ESI Software. The only platforms officially supported by CFD-ACE+ are Red Hat Enterprise Linux, SUSE Linux and Windows. Fortunately, it seems that ACE+ runs on other Linux distributions with only a
Hack of the Day: running CFD-ACE+ on Gentoo Linux Read More »
This is a follow-up to my earlier post about building NumPy with Intel compilers and the Intel MKL on CentOS 5. I will now explain how to build SciPy (which requires NumPy). First, download and unpack the SciPy source tarball. The following command can be used to build SciPy: LDFLAGS=”” FFLAGS=”-fPIC -openmp” python2.7 setup.py build
Building SciPy with Intel compilers and MKL on 64bit RHEL 5 Read More »
Newer enterprise-class hardware is starting to use UEFI instead of BIOS. UEFI is a big improvement, but there isn’t much documentation on the subject. Today I had to configure the UEFI for a new node in our cluster. I wanted to configure it exactly like an existing node that works. It was challenging just to
How to dump/print/display/show UEFI configuration for IBM hardware Read More »
In my previous post about the Mini Maker Faire Orlando, I described some of the cool hardware that was on display. In this post, I’m going to describe some of the electronics available from local vendors. Electrimod Local vendor Electrimod (Clermont, FL) was on hand to showcase their pluggable modules for PIC microcontroller development. Basically,
Mini Maker Faire Orlando Report: Electronics Read More »
I had a lot of fun at the Orlando Mini Maker Fair today! In this post I’m going to highlight some of the hardware vendors who took the time to come out and show their stuff to the community. 80/20: The Industrial Erector Set 80/20 is a company that makes modular aluminum framing systems. Their
Mini Maker Faire Orlando Report: Hardware Read More »