Master's Thesis Colloquium

Exploring the Potential of Distributed Computing using Web Technologies

Stefan Dühring,531721

20th June,Berlin

Lesson Learned

Source: What is the best toolkit to write long technical texts ?

Overview

Theory

Analysis

Development

Conclusion

Background

Background

Motivation

increasing connectivity

Source: State of Connectivity 2015

Background

Goal

"Provide an overview about 
 different aspects of Distributed 
 Computing using Web Technologies"

"Create a prototype based on the  
 gained knowledge"

Theory

Foundation

distributed computing

web technologies

Theory

Network Types

```
client-server
```

```
peer-to-peer
```

Theory

Consolidation

```
grid computing
```

```
volunteer computing
```

Theory

Algorithms

embarrassingly parallel

Theory

Environments

"The Ubiquitous Web will provide people with
 access whenever and wherever they find
 themselves, with applications that
 dynamically adapt to the user's needs,
 device capabilities and environmental
 conditions."

- Philipp Hoschka,
  Ubiquitous Web Domain Leader

Theory

Web Standards

communication

Source: Jimmy Lee

Theory

Engine

processing

Source: Massive: The asm.js Benchmark

Analysis

Browser Based Computing

architecture

Analysis

Comparison

additional challenges

Analysis

Perspectives

motivation

Analysis

Business

unreliable resources

Analysis

Security

untrusted execution

Analysis

User Experience

performance constraints

Source: The RAIL Performance Model

Analysis

Green Computing

optimized cooling / conversion

Source: Efficiency: How we do it

Analysis

Ad-Hoc Mobile

system > browser

Source: The State of JavaScript on Android in 2015 is...poor

Analysis

Science

existing networks

Analysis

Graphics

balanced in-/output

Source: distracer.io - Browser distributed ray tracing

Analysis

Diversity

heterogeneous systems

Source: On CSS/jQuery Selector Performance

Analysis

Resources

peer assisted delivery

Development

Requirements

```
users control their resources
```

```
data are only shared temporary
```

```
tasks should be universal accessible
```

```
modular structure for customization
```

Development

Concept

universal distributed assistance (udias)

Development

Demonstration

http://udias.online

Development

Components

dataflow

Development

Tools

webpack

Development

Libraries

WebTorrent

Source: webtorrent.io - How does WebTorrent work ?

Development

Implementation: Task

meta / work

Development

API endpoints

Implementation: Service

GET /tasks/{type}.{environment}.js

Development

Suppliant & Patron

Implementation: App

Development

Commands

Implementation: CLI

Conclusion

Evaluation

Decentral

Conclusion

Outlook

Specifications

Questions

Network Types

topologies

Details

Adapation

code transformation

Details

C/C++ => LLVM => Emscripten => JavaScript

Details

1996: first paper

1997: theSkyNet

1999: first volunteering computing

2009: only standard web technologies

2010: distributed decryption (Web Workers)

2011: GridBee for BOINC Tasks (localStorage)

2014: Muskeetpeer (WebRTC - DataChannels)

Collaboration

gamification

Details

Source: Renderfarm Teams and Statistics

Trends

combine services