[Twisted-Python] clustering or process group replication

[Darran Edmundson]

On 27/05/2005, at 2:34 AM, Laran Evans wrote:

> Would there be any value to developing such a system? Have you  
> found what you built for work valuable?
>
> Itamar Shtull-Trauring wrote:
>
>> I've built a reliable multicast (1->N ordered reliable message  
>> delivery,
>> NACK-based, with congestion control) system for work using Twisted  
>> and
>> the Fusion C++ Twisted bindings (http://itamarst.org/software/),  
>> but it
>> is not open source.
>>
>

Useful?  Wow, this is *exactly* what we are after for use within the  
Access Grid (www.accessgrid.org).
This community has invested a lot of time in getting multicast  
connectivity between the 200+ sites
currently involved.  Ie., we've got the network backbone.  At the  
moment we are only using multicast
for the RTP media transport (the old mbone tools vic and rat, the  
newer VideoPresence tool VP).  It would
be great though to have a framework reliable message delivery over  
multicast for some of the
lighter weight collaborative tools we are building.  At the moment,  
AccessGrid uses a centralized
VenueServer and TCP for coordinating sessions.

Cheers,
darran.

Darran Edmundson (darran.edmundson at anu.edu.au)
ANU Supercomputer Facility Vizlab
Australian National University, Canberra, ACT 2600
tel: +61 2 6125-0517  fax: +61 2 6125-5088