[vtk-developers] Multithreading with Win32 threads

[Moreland, Kenneth]

Why is there a hardcoded maximum in the first place?  It seems to me that whatever number you choose now will be excessively high and/or obsolete in the coming years as the number of cores per processor grows.

-Ken


On 1/24/11 8:04 AM, "Bill Lorensen" <bill.lorensen at gmail.com> wrote:

ITK has had the max set to 128 for quite a while.

On Mon, Jan 24, 2011 at 9:53 AM, David Partyka
<david.partyka at kitware.com> wrote:
> Sure thing, especially considering one can get a machine with dual
> Hexa-cores + Hyper Threading resulting in 24 available cores.
>
> On Mon, Jan 24, 2011 at 9:39 AM, David Cole <david.cole at kitware.com> wrote:
>>
>> I think it's just old and leftover, and nobody has yet found a compelling
>> need for more than 8 threads on Windows. It should be fine to increase this
>> number, especially if you actually have a Windows box with more than 8
>> processors on it.
>>
>> Feel free to change your build locally to increase that value. Perhaps
>> somebody here on the VTK developers list is also contemplating more powerful
>> Window machines these days... Anybody here want to bump this up and commit
>> the change?
>>
>>
>> On Mon, Jan 24, 2011 at 5:11 AM, Pavel Pokutnev
>> <pavel.pokutnev at googlemail.com> wrote:
>>>
>>> Hello vtk-devs,
>>>
>>> sorry, but I would like to repeat my question.
>>> There is a define VTK_MAX_THREADS in "Common/vtkSystemIncludes.h". It
>>> is defined to 8 for Win32 threads, but for all other platforms to 32.
>>> What is the cause for this non-conformity?
>>>
>>> Best regards,
>>> Pavel
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>
>
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   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
**  ***  **  phone: (505) 844-8919
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