[vtkusers] vtkVolumeRayCastMapper - Threads Reported

[Ravi Gupta]

Hi,

I was wondering if the following is a bug and/or if there is a way 
around this.

On a 2 CPU system vtkVolumeRayCastMapper reports 2 threads and 2 CPUs 
get used.
On a 4 CPU system vtkVolumeRayCastMapper report 4 threads and 4 CPUs get 
used.

I ran a bunch of tests on SGI and SUN systems
IRIX64 6.5 01091821 IP30
SunOS 5.8 Generic_108528-18 sun4u sparc SUNW,Sun-Fire-880

SGI - 32 CPU system allocating 32 CPUs 32 threads are reported and 32 
CPUs get used.
SGI - 32 CPU system allocating 8 CPUs 24 threads are reported and 8 CPUs 
get used.
SGI - 32 CPU system allocating 4 CPUs 28 threads are reported and 4 CPUs 
get used.
# threads + # CPUs used = Total # CPUs on the system.

SUN - 8 CPU system allocating 8 CPUs 8 threads are reported and 8 CPUs 
get used.
SUN - 8 CPU system allocating 4 CPUs 8 threads are reported and 4 CPUs 
get used.
# threads = Total # CPUs on the system.

On a 2 CPU Xeon Linux Redhat 8 system run to show 4 CPUs only 2 threads 
get reported and only 2 CPUs get used.

So my question is how do I get my code to have # Threads = # CPUs 
Allocated/available.

SetNumberOfThreads (int num) has not worked.

Thanks
Ravi

-- 
Ravi Gupta

Programmer

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