11 Mar 2011
Optimization is a mess, so use a library for it - but which?
After looking at several open-source candidates, I settled with NLopt. Strong points are
I find this particular paper by Nightingale (Microsoft Research) quite interesting (will be presented at EUROSYS '11); it analyses data collected by the Windows Error Reporting system (crash dumps) to look at CPU, DRAM and disk failure rates.
Some of the things learnt:
Another interesting piece of work is Google's Failure Trends in a Large Disk Drive Population, FAST '07.
It becomes increasingly harder to operate your own, small SMTP server. Large providers (gmail, hotmail) depend on IP repudation lists and as a small VPS operator your are in a large pool with other people. Interestingly, the US is the worst spam country.
multirbl.valli.org looks interesting too.
On the other hand, I did not have trouble sending email... hello, can you hear me?