-RM-206-MR-Crash of Colormapper
I use the Colormapper as output for a module which creates many datasets per second (that means, the output data of this module changes often). This constantly leads to crashes of OpenWalnut. I guess it is the Colormapper's fault because using (e.g.) Isosurface avoids this problem.
My first thoughts were that it could be a memory issue on the graphics card (the memory is nearly used completely by another module) but I could reproduce the crash even with an "empty" graphics card's memory.
Maybe the fast change of Colormapper's input data could be the reason?
(System: Ubuntu 12.04 64bit, GeForce 9800 GT/PCIe/SSE2, AMD Phenom(tm) II X4 920 Processor × 4 )
*DEBUG [WDataTexture3D] Creating Texture of type W_DT_DOUBLE *DEBUG [WDataTexture3D] Resolution: 160x200x160 *DEBUG [WDataTexture3D] Channels: 1 *DEBUG [WDataTexture3D] Value Range: [0,28299] - Scaler: 28299 Exception thrown! Callstack's backtrace: trace: WException::WException(std::string const&) -> lib/libopenwalnut.so.1(_ZN10WExceptionC2ERKSs+0x11d) [0x7faac9e3d89d] trace: WSegmentationFault::WSegmentationFault(std::string const&) -> lib/libopenwalnut.so.1(_ZN18WSegmentationFaultC2ERKSs+0xd) [0x7faac9e2e9ed] trace: SignalTranslator::SingletonTranslator::SignalHandler(int) -> lib/libopenwalnut.so.1(_ZN16SignalTranslatorI18WSegmentationFaultE19SingletonTranslator13SignalHandlerEi+0x66) [0x7faac9e2f036] trace: () -> /lib/x86_64-linux-gnu/libc.so.6(+0x364c0) [0x7faac3cc34c0] trace: ??? -> [0x7faa84000248] terminate called after throwing an instance of 'WSegmentationFault' what(): Segmentation Fault. Aborted (core dumped)
How to reproduce:
- checkout toolbox from openwalnut.org//srv/hg/ow-probtracking
- compile toolbox and start ow
- load symmetric tensor dataset and apply eigensystem module
- connect evec_1 through evec_3 as well as evals to the probtracking module
- attach colormapper to this module
- attach navigation slices module to see something (I think this is not mandantory)
- Fast move position of the seed point
- You should see a crash then sometime
(from redmine: created on 2012-08-27, closed on 2013-03-27)