IBM decouples PC "souls" from "bodies"

Click here to learn
about this Sponsor:

Home | News | Articles | Polls | Forum

Keywords: Match:

Aug. 16, 2005

IBM researchers have prototyped a personal computing paradigm they believe could "change the way computers are built and used." The SoulPad Project aims to decouple computer "bodies" (CPUs, I/O devices, etc.) and computing "souls" (OSes and applications), allowing users to transport souls on mobile devices such as cell phones, iPods, and USB storage devices.

The SoulPad Project has developed a prototypical three-layer software stack comprising a host OS, virtual machine monitor, and user session layers. The stack allows users to hibernate their computing sessions onto a pocket form-factor device (e.g. a portable USB hard drive), for later resumption on a completely different PC.

The SoulPad comprises host OS, VMM, and user session layers
The SoulPad's host OS layer is based on Knoppix, a small "live" Linux distribution capable of detecting and self-configuring itself at boot time to accommodate a wide variety of x86 hardware. In the SoulPad prototype, Knoppix is used as a kind of bootloader that initializes and boots the PC, and manages security. The user must supply a secret password -- optionally by inserting a USB dongle -- midway through the Knoppix boot, in order to access an encrypted filesystem containing their personal computing environment.

After Knoppix mounts the encrypted filesystem and finishes booting, it launches a virtual machine monitor layer that serves as a platform from which the user's chosen operating system (OS) loads. In the SoulPad prototype, this layer is based on VMware Workstation, a commercial software package that virtualizes a PC's hardware resources, allowing multiple OSes to run concurrently. SoulPad users can choose to run Linux, Windows, or other OSes supported by VMware as the OS platform (the "Guest OS") for their application software.

OS sessions within VMWare can be suspended to disk, a capability exploited by the SoulPad software stack to prevent having to relaunch the user's OS and applications each time.

Launching the complete SoulPad software stack currently takes about two and a half minutes, including booting Knoppix, launching VMWare, and restoring the user's OS, session state, and running applications from the encrypted filesystem. Hibernating the session back onto a portable storage device takes about 30 seconds, according to IBM.

IBM has published a video, available in low and high resolutions, showing a user resuming a session stored on an iPod Photo equipped with a 60GB harddrive, to demonstrate that the SoulPad software stack can be added to devices with 6GB or more of storage. The session boots up, and shows a game of chess in progress, a document being edited in a word processor, and a music player playing a pop tune.

The SoulPad project believes its approach to be superior to similar projects such as Intel's wireless Personal Server project (stories here and here) and the Internet Suspend and Resume project. Compared to the former, the SoulPad eliminates wireless device association and power requirements. In contrast to both, the SoulPad requires no particular software stack on the client computer.

The SoulPad project hopes its technology will be useful to itinerant business professionals, as well as users in developing nations who cannot afford a complete PC, yet wish to maintain personalized computing environments.

The SoulPad project hopes its technology will be useful to itinerant business professionals, as well as users in developing nations who cannot afford a complete PC, yet wish to maintain personalized computing environments.

The SoulPad project team consists of M. T. Raghunath, Chandra Narayanaswami, Ramón Cáceres, and Casey Carter (summer intern - 2004). Long-time LinuxDevices.com readers may remember Narayanaswami and Raghunath, for their involvement in the Linux wrist watch project, one of the first applications of Bluetooth technology.

The SoulPad project team has published a 14-page paper describing how boot and suspend times vary according to processor, disk, and interconnect speed; runtime overhead caused by virtualization; practical issues related to processor architecture evolution; and various security issues. The complete SoulPad paper can be found here.

Related Stories:

(Click here for further information)

7 Advantages of D2D Backup
For decades, tape has been the backup medium of choice. But, now, disk-to-disk (D2D) backup is gaining in favor. Learn why you should make the move in this whitepaper.

4 Legal Reasons to Control Internet Access
The Internet is obviously a valuable resource for many organizations. However, many are exposed to legal liability concerns because they fail to control Internet access. Learn if you're safe in this white paper.

Rapidly Resolve J2EE Application Problems
Whether you are in the process of building J2EE applications or have J2EE applications already running in production, you must ensure that they deliver the expected ROI. Learn how in this white paper.

Load Testing 2.0 for Web 2.0
There are many unknowns in stress testing Web 2.0 applications. Find out how to test the performance of Web 2.0 in this white paper.

Build Better Games Online
For the game infrastructure providers, life is complex. Making money from games has become more complicated. Why? Find out in this white paper.

Building a Virtual Infrastructure from Servers to Storage
This white paper discusses the virtual storage solutions that reduce cost, increase storage utilization, and address the challenges of backing up and restoring Server environments.

Gaining Faster Wireless Connections with WiMAX
Welcome to what is quickly becoming the hyperconnected world where anything that would benefit from being connected to the network will be connected. Learn more in this white paper.

Is Your Desktop a Security Threat?
The new wave of sophisticated crimeware not only targets specific companies, but also targets desktops and laptops as backdoor entryways into those business’ operations and resources. Learn how to stay safe in this white paper.

Increasing SAN Reliability by 100 Percent
Storage area networks (SAN) are a strong part of storage plans. Learn how to increase your reliability and uptime by 100 percent in this case study.

Got a HOT tip? please tell us!

Click here for a profile of each sponsor:

PLATINUM SPONSORS
<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=timesys;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=timesys;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=windriver;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=windriver;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=versalogic;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=versalogic;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=winsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=winsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=virtuallogix;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=virtuallogix;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=trolltech;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=trolltech;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=montavista;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=montavista;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=calaosystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=calaosystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=technologicsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=technologicsystems;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=technicalsolutions;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=technicalsolutions;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>

GOLD SPONSORS
<a href="http://ad.doubleclick.net/jump/entzd.linuxdevices/desktop;kw=ultimate;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?"" style="border-width:0px;height:150px;width:30px;"><img src="http://ad.doubleclick.net/ad/entzd.linuxdevices/desktop;kw=ultimate;pos=top;dcopt=ist;zdid=a221772;tile=1;sz=150x30;ord=<script=JavaScript>document.write(Math.round(Math.random()10000000000));</script>?" style="border:0; height: 150; width:30;" /></a>		(Become a sponsor)

ADVERTISEMENT
(Advertise here)

Check out the latest Linux powered...

mobile phones!

other cool
gadgets

HOWTOs: from DevShed & IBM DeveloperWorks:

BREAKING NEWS

• Balanced XIP and the AXFS filesystem
• ARM-based controller has StackableUSB expansion
• Intel multi-core threading library supports Sun Studio
• Multi-protocol wireless mesh gateway runs Debian
• Embedded Linux is doomed. DOOOMED!
• Article explores Linux hot-patching utility
• Sun demo's RIA tools on Android
• Panel PCs support PoE, Linux
• New Palms on horizon?
• Embedded track added to Linux conference
• Ubuntu ported to a PDA
• Linux-friendly SBC hosts dual quad-core Xeons
• Embedded Linux SQL database adds Java, C# bindings
• Lightweight, embedded graphics framework rev'd
• Shock resistant automation computer runs Linux

Linux-Watch headlines:
• Running a small business on desktop Linux
• Sun launches OpenSolaris
• Via tiptoes toward openness
• Linux certification comes to Italy
• Installing Ubuntu Hardy Heron as a web hosting server
• Black Duck Buys Koders
• Open source conference co-locates with Ubuntu show
• Ubuntu 8.04 ready to challenge Windows
• KDE Linux reaches 52 million Brazilian kids
• Free x86-based Linux router distro rev'd

Also visit our sister site:

Sign up for LinuxDevices.com's...

news feed

Use of this site is governed by our Terms of Service and Privacy Policy. Except where otherwise specified, the contents of this site are copyright © 1999-2008 Ziff Davis Enterprise Holdings Inc. All Rights Reserved. Reproduction in whole or in part in any form or medium without express written permission of Ziff Davis Enterprise is prohibited. Linux is a registered trademark of Linus Torvalds. All other marks are the property of their respective owners.