[Paraview] Paraview Build Option - VTK_SMP_IMPLEMENTATION_TYPE; parallelization questions

[David E DeMarle]

Hi Praveen,

The paper that you linked is the original implementation and is still quite
relevant.

See: http://www.vtk.org/Wiki/images/3/3b/VTK_SMP_Guide.pdf
for more information on the work as it stands now that it has been brought
into VTK proper (as of release 6.1)

As that doc says, VTK is still largely _not_ thread safe. Portions of it
always have been. For example anything used within the threaded image
filters was before vtkSMP, and anything used within Filters/SMP is now.

Turn on the Filters/SMP module to try it and take a look at the Cxx
regression tests in the module itself for starters.

David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Wed, Oct 8, 2014 at 9:08 PM, Praveen Narayanan <praveenn at nvidia.com>
wrote:

>  I would like to know what the flags imply:
>
>
>
> VTK_SMP_IMPLEMENTATION_TYPE: Which multi-threaded parallelism
> implementation to use. Options are Sequential, Simple, Kaapi or TBB.
>
>
>
> Is there a proper description of these parameters (or a an example/test in
> the suite)?
>
> The following paper yields some information:
> http://hal.inria.fr/docs/00/78/98/14/PDF/RR-8245.pdf
>
>
>
> I would assume that these improvements translate to the insertion of
> appropriate directives, semaphores and the like in several parts of VTK.
> Could you point me to material/papers which would explain implementation
> specific details?
>
> Some online sources (probably outdated) claim that VTK is not thread safe.
>
>
>
>
> Thanks
>
> Praveen.
>
>
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