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help > Segmentation error in 3D view

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Segmentation error in 3D view

Hi,
I have download the latest v3d linux (redhat) version of v3d and try to display my data in 3D viewer.
I need to make it clear that I use v3d by remotely controlling my office desktop (window) and then telneting to the linux server through ssh. It's a little bit complex. Then after I have loaded the data and tried to show in 3d viewer, v3d crashed and reported the segmentation error. (see below)
I believe that v3d will not have that problem in the local machine. I guess it is because of the network latency. Could any guy give the help? Thanks.

Here is the XTERM output:
Searching in ./plugins ......
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/5D_Stack_
Converter/libmovieZCswitch.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/Canvas_Er
aser/libcanvas_eraser.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/Change_Pi
xel_Value/libupdatepxlval.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/Distance_
Transform/libdt.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/Gaussian_
Filter/libgaussianfilter.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/min_Max_F
ilter/libminMaxfilter.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/ReCenter_
Image/librecenterimage.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/Rotate_Im
age/librotateimg90.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/V3D_Plugi
n_Multi_Image_Interface_demo/libnewwindow.so"
plugin: "/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/plugins/V3D_Plugi
n_Single_Image_Interface_demo/libextrafilters.so"
Searching ./plugins done.
The pixel map size is 0 0 (for invalid imagedata)
The pixel map size is 0 0 (for invalid imagedata)
The pixel map size is 0 0 (for invalid imagedata)
cur layout=187219184
MainWindow::createMdiChild *** workspace->windowList: () += XFormWidget(0xb29ff4
0)
size hint=890 849 min size hint=890 768
/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/tt2.tif
The current input file has the surfix [tif]
img data size 512 512 108 3
V3dR_MainWindow::V3dR_MainWindow =====================================
"3D View [/shenlab/scratch/grwu/v3d_redhat_fedora_64bit_v2.485/tt2.tif]"
X Error: BadMatch (invalid parameter attributes) 8
Major opcode: 1 (X_CreateWindow)
Resource id: 0x46
X Error: GLXBadDrawable 151
Extension: 142 (Uknown extension)
Minor opcode: 5 (Unknown request)
Resource id: 0xe004a9
QGLTempContext: Unable to create GL context.
Segmentation fault

RE: Segmentation error in 3D view

On our machines we did many tests, and found that the problem was an XIOerror. This was related to both the network speed and the size of the image (and of course the faster network can transfer larger trunk of data!).

Indeed, we did not experience any problem when we ran across X11 over a network within the office, but on multiple machines. e.g. using a Mac Desktop to ssh a Linux box, or using a Linux to ssh another Linux box.

But for a slow network we found that if the image data is small, we did not have a problem. When the image was large, there was an XIOerror which caused the segmentation fault.

-hanchuan

Originally posted by Guorong Wu: