Monthly Archives: November 2012
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Using Eigen Linear Algebra Library with Visual C++ 2010 Express 64bit
Eigen is a free and open source, relatively fast, very versatile linear algebra library written completely in C++ templates. It is very fast and in some cases produces code as fast as commercial implementations like Intel MKL, AMD ACML etc. The beauty of the Eigen is, it’s completely written in C++ templates and it’s very easy to plug it in to a project compiled with any supported compiler.
Here I describe the process of how to install Eigen with Microsoft Visual Studio 2010 Express and 64bit compilers from Microsoft Windows SDK 7.1 supporting OpenMP and vectorization with SSE2. All these tools are free.
C++, Computing -
Securing Ubuntu Server with a free SSL certificate from StartSSL™
Pre-Requirements:
Working LAMP installation with Ubuntu Server. Help is here and here. SSL security is enabled for Apache with Name Based Virtualhosts.
Assumption
Name of the website is www.example.com. Replace it with your correct domain name.
Obtaining a SSL certificate for your website from StartSSL is quite straightforward. Use ExpressLane option from the StartSSL start page and steps will be self explanatory. Here I assume you already created a personal digital certificate, logged in to StartSSL, verified your domain, and created a private key (you can also create your own private key and a CSR yourself from openssl command) and finally downloaded/saved both your server certificate and private certificate files.
Ubuntu, Webserver
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Replacing my HomePlug AV link with a Wireless Client Bridge
I had a Homeplug AV link between my router and and network enabled devices (Raspberry Pi running Raspbmc and a LG-DP1B Media player) in my bedroom. I used the Western Digital Livewire AV Network Kit, which conforms to the Homeplug AV standard. When I moved to a new apartment the performance of the Livewire AV link was degraded significantly. I used to have a consistent throughput around 40Mbps before (out of the maximum possible 200Mbps) in the previous apartment. But with a very old power-circuit in the current apartment and also due to the fact, the living-room, where the router is installed, and the bedroom are connected to two different power-circuits, the sustained throughput obtainable was only around 15Mbps. (Which is actually lower than a good quality 802.11g link)
Home Networking, Networking -
Telia Sweden IPv6 6rd Tunnel with Asus RT-N56U Router
The ipv6-ipv4 dual stack is now enabled for Padavan’s latest firmware for RT_N56U. This post is about firmware ‘RT-N56U_3.0.2.6-018 (en-ru). IPv6+IPv4. Linux kernel 3.0.43‘ Before entering ipv6 details in ipv6 […]
Home Networking, Networking -
How to force SSL in WordPress admin interface
Method-1 If WordPress is installed to a SSL enabled web host, forcing SSL to the admin interface is quite simple. Just add following line in to the main wordpress configuration file ‘wp-config.php‘: […]
Webserver, Wordpress