From the Editor - Got a Linux Server? Thank a Beowulf.
In May 1965, IBM Chairman T. J. Watson, Jr., wrote of large scientific computers, “at some point between two and three years ago it became evident that the fallout from the building of such large-scale machines was so great as to justify their continuance at almost any cost” (on Dr Mark Smotherman's site at www.cs.clemson.edu/~mark/acs.html). That doesn't mean that high-performance computing (HPC) startups have an easy time entering the enterprise market. From Control Data to Thinking Machines, history shows that if you concentrate on winning in HPC, you don't get the skills to cross over to regular business customers.
But ten years after the first Beowulf, examples of what Watson called fallout are everywhere on the Linux scene. From smoking out bad power supplies to fixing device drivers to making manageability work for the PC architecture, HPC customers are ruthless in demanding tweaks to turn a rack of off-the-shelf stuff from a maintenance nightmare to an asset. For an IT vendor, an HPC program can work like an automaker's racing program to test cutting-edge ideas and get everyone fired up to win bragging rights.
Early Linux clusters were labor-intensive, with “crash carts” including keyboard and monitor for BIOS access. Today, LinuxBIOS makes the pit crew's work feasible for more and more machines per administrator. See Bernard Li's article on how to take advantage of years of cluster experience from some of the biggest, most innovative Linux supercomputing sites (page 52).
And, forget about manageability for a while—let's talk performance issues. Paul Terry, Amar Shan and Pentti Huttunen might have just sped up many people's work by a whole lot. Check out their scheduler performance numbers on page 68 and prepare for more efficient work on your parallel jobs.
Leigh Orf has some great imagery of thunderstorms, rendered just for this issue, and the software behind them is something you can download and hack yourself. Get some ideas about scientific visualization on page 62, and send us some images.
This issue isn't all clusters—Andres Benitez and Vicente Gonzales show how they turned inexpensive non-networked air conditioners into a money-saving system for a classroom building (page 44). And Nick Moffitt, whose spam-fighting articles have been a hit on the Linux Journal Web site, is here with an introduction to a new, flexible revision control system (page 90).
Whether you're putting together a cluster or enjoying the benefits of Beowulf-driven improvements in hardware, Linux and related tools, have a great time experimenting with all the amazing technology and cool projects in this issue.
Don Marti is editor in chief of Linux Journal.
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|CentOS 6.8 Released||May 27, 2016|
|Secure Desktops with Qubes: Introduction||May 27, 2016|
|Chris Birchall's Re-Engineering Legacy Software (Manning Publications)||May 26, 2016|
|ServersCheck's Thermal Imaging Camera Sensor||May 25, 2016|
|Petros Koutoupis' RapidDisk||May 24, 2016|
|The Italian Army Switches to LibreOffice||May 23, 2016|
- Secure Desktops with Qubes: Introduction
- Download "Linux Management with Red Hat Satellite: Measuring Business Impact and ROI"
- CentOS 6.8 Released
- Linux Mint 18
- The Italian Army Switches to LibreOffice
- Chris Birchall's Re-Engineering Legacy Software (Manning Publications)
- ServersCheck's Thermal Imaging Camera Sensor
- Petros Koutoupis' RapidDisk
- Oracle vs. Google: Round 2
- The FBI and the Mozilla Foundation Lock Horns over Known Security Hole
Until recently, IBM’s Power Platform was looked upon as being the system that hosted IBM’s flavor of UNIX and proprietary operating system called IBM i. These servers often are found in medium-size businesses running ERP, CRM and financials for on-premise customers. By enabling the Power platform to run the Linux OS, IBM now has positioned Power to be the platform of choice for those already running Linux that are facing scalability issues, especially customers looking at analytics, big data or cloud computing.
￼Running Linux on IBM’s Power hardware offers some obvious benefits, including improved processing speed and memory bandwidth, inherent security, and simpler deployment and management. But if you look beyond the impressive architecture, you’ll also find an open ecosystem that has given rise to a strong, innovative community, as well as an inventory of system and network management applications that really help leverage the benefits offered by running Linux on Power.Get the Guide