University of Toronto WearComp Linux Project
Much work remains to be done in development of this project. Currently, I teach Electrical and Computer Engineering (ECE1766) at the University of Toronto. To the best of my knowledge, this is the world's first course on how to be a “cyborg” entity. Students learn not only by doing, but by being. I call this form of learning existential learning. Each student creates a “reconfigured self”--a new form of personal space. Thus, students learn about the concept of personal empowerment from a first-person perspective through personal involvement.
We are writing new protocols for the altered perception of reality (mediated reality) that the WearComp provides. One example is picture-transfer protocol (PTP), in which packets of variable length are transmitted. Each packet is a JPEG compressed picture. Because of image compression, the amount of data varies depending on image content, hence the packet length depends on image content.
The reason for one packet per picture is that pictures are taken 60 times per second, which is much faster than they can be sent. Thus, whenever there is a lost packet and a re-transmission is needed, a newer picture will most likely be available to be sent instead. With PTP, retransmissions are always current.
Next month I will describe a mathematical (computational) framework called “Mediated Reality”, in which we will see that picture data is of greatest value only if it is up-to-date. Old pictures are of less value when trying to construct a computer-mediated reality. Thus, packet resends should always be of the most current image; hence the design of PTP is based on variable packet lengths, in which the packet length is the length of a picture.
Further information about the WearComp Linux project may be found in http://wearcam.org/ece1766.html.
Thanks to Kodak and Digital Equipment Corporation (DEC) for assistance with the Personal Imaging and Humanistic Intelligence projects.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
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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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