0x5f3759df – calculating inverse square root

An interesting article in Wikipedia on calculating a first approximation of the inverse of the square root Fast inverse square root, or 0x5f3759df – calculating inverse square root

Brian Koberlein on Google+: Astronomy Blog

Brian Koberlein on Google+ on Astronomy contains a number of interesting articles on current developments in astronomy and relativity.

Brian Koberlein on Google+

Added 31-Aug-2013: Brian Koberlein now has a WordPress powered separate web presence: www.briankoberlein.com.

Added 21-Oct-2013: Brian Koberlein noted that he now has 25,000 followers in Google+.

Added 01-May-2014: Brian Koberlein now has 32.000 followers and 22 million views on Google+.

Counting to Ten on Linux

Very good article on timing CPU bound application.

Random ASCII - tech blog of Bruce Dawson

I recently discovered a Linux shell script that was running slowly due to an inefficiently implemented loop. This innocent investigation ended up uncovering misleading information from time and a bad interaction between the Linux thread scheduler and its CPU power management algorithms.

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