Difference between revisions of "Karma/Specifications"

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Since a large percentage (if not the majority) of Karma users are envisioned to be using OLPC XO-1 laptops, netbooks, older hardware or generally relatively slow systems there are several performance constraints that need to be taken into account when designing Karma lessons.
 
Since a large percentage (if not the majority) of Karma users are envisioned to be using OLPC XO-1 laptops, netbooks, older hardware or generally relatively slow systems there are several performance constraints that need to be taken into account when designing Karma lessons.
  
* CPU/Memory:  
+
* CPU/Memory: The baseline regarding available performance is the XO-1 laptop which comes with an AMD Geode LX 433MHz CPU and 256MB RAM [http://wiki.sugarlabs.org/go/Karma/Specifications full specifications]. This limits the use of high-resolution multimedia, animations and videos to some degree.
 
* Display: Karma lessons should work well on displays with a resolution of 1024*768 (whereby a part of the display may be taken up by browser UI elements!).
 
* Display: Karma lessons should work well on displays with a resolution of 1024*768 (whereby a part of the display may be taken up by browser UI elements!).
 
* Mass storage: Since especially the XO-1 laptop only has very limited local mass storage (1GB) lessons should be kept reasonably small.  
 
* Mass storage: Since especially the XO-1 laptop only has very limited local mass storage (1GB) lessons should be kept reasonably small.  

Revision as of 07:03, 12 August 2009

Introduction

Constraints

Since a large percentage (if not the majority) of Karma users are envisioned to be using OLPC XO-1 laptops, netbooks, older hardware or generally relatively slow systems there are several performance constraints that need to be taken into account when designing Karma lessons.

  • CPU/Memory: The baseline regarding available performance is the XO-1 laptop which comes with an AMD Geode LX 433MHz CPU and 256MB RAM full specifications. This limits the use of high-resolution multimedia, animations and videos to some degree.
  • Display: Karma lessons should work well on displays with a resolution of 1024*768 (whereby a part of the display may be taken up by browser UI elements!).
  • Mass storage: Since especially the XO-1 laptop only has very limited local mass storage (1GB) lessons should be kept reasonably small.
  • Connectivity: Karma lessons must not assume constant connectivity with a locally (e.g. XS) or globally available server. Support for storing data locally will be provided by Karma.

Animations

  • Format(s): TBD
  • Recommended tools: TBD
  • Notes: TBD
  • ...

Images

Sound

  • Format(s): OGG Vorbis
  • Bit rate: TBD
  • Max. size per lesson: 3~4MB
  • Recommended tools: Audacity
  • Notes: TBD

Video

  • Format(s): TBD
  • Recommended tools: TBD
  • Notes: TBD
  • ...