Building Your Own Super Computer Building Your Own Super - Building a Linux Cluster ( 4 ) Linux clusters are generally more common, robust, efficient and cost effective than Windows clusters. We will now look at the steps involved in building up a Linux cluster. Step 1 Install a Linux distribution (I am using Red Hat 7.1 and working with two Linux boxes) on each computer in your cluster. Usually, one node is designated as the master node (where you'll control the cluster, write and run programs, etc.) with all the other nodes used as computational slaves. Our cluster is private, so theoretically we could assign any valid IP address to our nodes as long as each has a unique value. If you already have Linux installed on each node in your cluster, then you don't have to make changes to your IP addresses or hostnames unless you want to. Finally, create identical user on each node. Step 2 We now need to configure rsh on each node in our cluster. Master DevArticle Slave DevArticle Master root Slave root tar zxfv mpich.tar.gz
Home | NAS4Free - The Free Network Attached Storage Project Tonido - Privacy and Online Freedom from third-party servers | P ZFS Raidz Performance, Capacity and Integrity Comparison July 15, 2014 comparing speed, space and safety per raidz type The ZFS file system on FreeBSD and Ubuntu Linux is incredible. ZFS has data integrity verification, protection against data corruption, support for high storage capacities, great performance, replication, snapshots and copy-on-write clones, and self healing which make it a natural choice for data storage. The most asked question we hear when talking about raids is, "Which raid is the best?" Eventually you will lose a drive and depending on the raid solution will decide if data is lost. Raids have three main benefits: Performance, Capacity and Integrity. The ASCII triangle below shows all three properties. # Raids have three main advantages over using a single disk. What are the advantages and disadvantages of each raid type ? raid0 or striping array has no redundancy, but provides the best performance and additional storage. Be Safe, Not Sorry. Specification of the testing raid chassis and environment Bonnie++ benchmarks
SimpleRip: Ripping/Encoding DVDs to Xvid with Mencoder :: qua This page generates the necessary commands to encode a movie directly from a DVD title to an Xvid file using MEncoder without the need for other applications or helper scripts. (mencoder commands will magically appear here) Options Source file This is the input file to read. Output file This is the .AVI file that results when the encoding is complete. Audio and video bitrates For movies, 128kbps for audio is typically plenty. Volume gain Value from -10 to 10. Process nice Value from -20 to 19. Crop Cropping is necessary to remove the black borders at the top and bottom of widescreen-format DVDs, and scaling will resize the output video to a smaller pixel by pixel area, resulting in increased quality. Mplayer can automatically detect the crop settings. The format for this option is W:H:X:Y, where: Cropped width and height. Position of the cropped picture. Scale For determining the scale, decide if the movie widescreen (16:9 ratio) or fullscreen (4:3). This option is complicated. Passes Value: 1 or 2.
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