[VTK ARB] RE [vtk-developers] ARB

[Stephane PLOIX]

Hi ARB,

Another topic that could also be of interest : multi-threading. 
I will not elaborate on the why (multi-cores) of this question and on the 
potential unefficiency (memory bound algorithms) of it, I believe it is a 
subject on which VTK should have a clear policy / roadmap.
I know this is a huge task, but could we try to take the first steps :
*maybe justify why VTK will never be multi-threaded and be clear about it.
*If not, I believe the first step is to make the methods reentrant 
(including iterators as listed in the topics for the next arb meeting, 
removing static variables...)
*An then in any order, support different kind of multithreading : 
**inter-algorithm (update several filter together when there is no 
dependency in the pipeline),
**inter-block (when an algorithm loops over multiple independent blocks, 
there is potential for multi-threading),
**intra-algorithm (algorithm-dependent).

Some (or all?) of these topics have already recieved attention and some 
have partial solutions (vtkMultiThreader...), but I have not seen any 
clear roadmap on this subject.

Best,
Stephane




jeff.baumes at kitware.com 
Envoyé par : vtk-developers-bounces at vtk.org
01/04/2010 21:36

A
vtkusers at vtk.org, vtk-developers at vtk.org
cc

Objet
[vtk-developers] ARB






VTK community,

I just wanted to take the opportunity to tell you about what has been
happening with the VTK ARB (architecture review board). The ARB was
formed last year to facilitate forward progress in VTK. It is a task
force consisting of researchers around the world that was formed to
work out the details required to make important changes, such as
release schedules and moving to git repository. The ARB wants your
input, and wants to be transparent about its discussions and
decisions. A page describing the ARB is located at

http://www.vtk.org/Wiki/VTK/ARB

Scheduled meetings and meeting notes are located at

http://www.vtk.org/Wiki/VTK/ARB/Meetings

Jeff
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