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0011576

VTK

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public

2010-12-07 11:41

2016-08-12 09:55

Reporter

tomasz

Assigned To

Kitware Robot

Priority

normal

Severity

minor

Reproducibility

always

Status

closed

Resolution

moved

Platform

Win32

OS Version

Product Version

Target Version

Fixed in Version

Summary

0011576: vtkProbeFilter very slow when probes are at cells with node blanking

Description

vtkProbeFilter spends lots of time (approx. 1000 x normal seed case) when probe location resides within a cell with one or more points blanked.
On my Core-i7/920 it takes 1/4 second to probe such "degenerate" cell, while 1000 non-generated probes succeed within the same time. The structured 3D grid is pretty small with 250k nodes only!

Steps To Reproduce

Create Structured Grid.
Add some point data,
issue some BlankPoint(...) on some region.
vtkProbeFilter on single source point at some location which belongs to a cell with blanked node(s).
UpdateProgress shows 0 and, finally, after 1/4-1 second, the next update.
Compare vtkProbeFilter behaviour to the normal (non blanked) location.

Additional Information

It seems to me that FindCell or the region nearby within ProbeEmptyPoints might be responsible for "extremely slow" handling of cells with points blanked.
Despite this "Performance issue" results are correct (NullPoint as expected data).

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Notes
(0023755) tomasz (reporter) 2010-12-07 11:45	Applies to VTK 5.6 also.

(0037214) Kitware Robot (administrator) 2016-08-12 09:55	Resolving issue as `moved`. This issue tracker is no longer used. Further discussion of this issue may take place in the current VTK Issues page linked in the banner at the top of this page.

Issue History
Date Modified	Username	Field	Change
2010-12-07 11:41	tomasz	New Issue
2010-12-07 11:45	tomasz	Note Added: 0023755
2016-08-12 09:55	Kitware Robot	Note Added: 0037214
2016-08-12 09:55	Kitware Robot	Status	expired => closed
2016-08-12 09:55	Kitware Robot	Resolution	open => moved
2016-08-12 09:55	Kitware Robot	Assigned To	=> Kitware Robot