[Insight-users] Streaming and multi-threading

[Jack Lee]

Dear all,

I have some general questions regarding streaming and multi-threading in 
itk that I couldn't easily figure out from the web searches:

- If threadedGenerateData() implemented for a filter, does it mean it's 
both streamable & multithreaded? Or is there another independent 
mechanism for a filter to be streamable?

- Generally itk will try to use all available cores, but it appears that 
the number of streams has to be manually set. Does this mean that each 
stream will be multi-threaded?

- In a pipeline, if just one filter isn't streamable, would that mean 
the whole pipeline isn't streamable? Will such a pipeline simply cause 
an error, or does itk have some mechanism for detecting and warning 
these cases?

- To enable streaming in practice, is using the StreamingImageFilter 
necessary? or can I just modify one of the filters in the pipeline, e.g. 
by calling the ImageFileWriter -> SetNumerOfStreamDivision(n) with n>1 ?

Many thanks,

Jack