[vtk-developers] [VTK 0012115]: FixedPointRayCaster gives different results depending on number of threads

Mantis Bug Tracker mantis at public.kitware.com
Thu Apr 21 00:05:33 EDT 2011


The following issue has been SUBMITTED. 
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http://www.vtk.org/Bug/view.php?id=12115 
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Reported By:                David Gobbi
Assigned To:                
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Project:                    VTK
Issue ID:                   12115
Category:                   (No Category)
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
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Date Submitted:             2011-04-20 22:05 MDT
Last Modified:              2011-04-20 22:05 MDT
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Summary:                    FixedPointRayCaster gives different results
depending on number of threads
Description: 
The dashboard test TestFixedPointRayCasterLinearCropped.tcl fails when run on
machines with a large number of CPUs.  The problem can be simulated on any
machine by pumping up the number of threads.

Steps to Reproduce: 
Add the following lines to the beginning of
TestFixedPointRayCasterLinearCropped.tcl

vtkMultiThreader multithread
multithread SetGlobalDefaultNumberOfThreads 64

Then run the test via ctest.  It will produce an incorrect image.
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Issue History 
Date Modified    Username       Field                    Change               
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2011-04-20 22:05 David Gobbi    New Issue                                    
2011-04-20 22:05 David Gobbi    File Added:
TestFixedPointRayCasterLinearCropped.diff.png                    
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