My Next Pentium Is A DEC Alpha
Of course, I caused my own disaster, but that makes the repairing much more rewarding (you have that relief factor). After the first weekend of fun, what could I do for amusement? Porting over some of my favorite utilities would be fun. Both Red Hat and Craftworks take some of the fun out by already porting over the Apache Web Server and browsers, but I could still have some fun by moving other stuff over. So, the next question is, “What do you have to know to port code to Alpha Linux?”
X-Windows applications that use IMakefiles basically configure themselves out of the box. GNU software that uses autoconf/configure to figure out what system it is running on tends to get confused. The machine configuration string that it synthesizes looks like alpha-unknown-linuxaout. This is confusing because it is an alpha that is not running DEC Unix, nor is it Linux running on an Intel system. What to do? Well, I usually put in the following code segment into configure:
alpha-dec-osf3* ) machine=alpha opsys=decosf3-1 ;; ## We're Alpha Linux alpha-*-linux* ) machine=alpha_linux opsys=linux_axp ;; ## Altos 3068 m68*-altos-sysv* ) machine=altos opsys=usg5-2 ;;
But that means I have to write a ./src/m/alpha_linux.h (which I would make by blending alpha.h, and removing anything cd DEC Unix specific), and ./src/s/linux_axp.h (which would be made from linux.h, minus instructions on how to make sharable libraries). None of that is too difficult. Later releases of most software will come with pre-built configuration files as autoconf gets updated, and developers begin to use the new version.
The other issue you get involved with is the fact that several programs publicly available assume 32-bit addresses and 32-bit ints. Linux for the Alpha is a 64-bit operating system, with 64-bit addresses. Frequently, this provides harmless warnings about adding 32-bit offsets to 64-bit pointers.
Then there are the programs that attempt to override the definition of operating system calls. System calls that have been standardized to take parameters like size_t (but is being redefined for unsigned int) will cause complaints from the compiler.
The really insidious things, though, are those programs that do bitwise manipulations without regard to portability. Generally, I've learned to become suspicious of any program that isn't packaged with autoconf/IMakefile, which runs only on one platform (e.g., it runs on Linux; you tell us if it runs on Solaris, BSD, HPUX, etc).
The Future Looks Bright
Many packages compile out of the box. With ELF support comes the ability to port the Java JDK over. Sun, HP, and other notables are releasing their 64-bit processors to the marketplace. And while everyone argues what the 64-bit standard for Unix will be, we will already have been there, and have moved on to more interesting projects.
Bryan W. Headley (firstname.lastname@example.org) has been working with Unix since 1978 except for an interruption by that interloper, MS-DOS. A Unix applications developer by day, he becomes a Linux hacker by night. There isn't a compiler or kernel that he doesn't find worth playing with.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
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|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
- Doing for User Space What We Did for Kernel Space
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide