Dear Chuck, dear Ken,
thanks for the replies.
> I've had similar issues with VirtulGL and VTK in the past. The "Shader
> object was not initialized, cannot attach it." error is often the result of
> some sort of required OpenGL version support for a specific call is lacking.
> A few questions:
> • Are you able to run on the actual machine without Virtual GL?
the machine is a headless server down in our machine room, and I can not easily
access it.
> • What does the output of glxinfo running in the x2go+VirtualGL
> environment look like?
Here is how it looks like:
$ vglrun glxinfo
name of display: :55
display: :55 screen: 0
direct rendering: Yes
server glx vendor string: VirtualGL
server glx version string: 1.4
server glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_swap_control,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_make_current_read,
GLX_SGI_swap_control, GLX_SUN_get_transparent_index
client glx vendor string: VirtualGL
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_swap_control,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_make_current_read,
GLX_SGI_swap_control, GLX_SUN_get_transparent_index
GLX version: 1.4
GLX extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_swap_control,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_make_current_read,
GLX_SGI_swap_control, GLX_SUN_get_transparent_index
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: Tesla M2075/PCIe/SSE2
OpenGL core profile version string: 4.5.0 NVIDIA 361.28
OpenGL core profile shading language version string: 4.50 NVIDIA
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
…
lots of extensions
…
OpenGL version string: 4.5.0 NVIDIA 361.28
OpenGL shading language version string: 4.50 NVIDIA
OpenGL context flags: (none)
OpenGL profile mask: (none)
---
Without vglrun I get:
$ glxinfo
name of display: :55
display: :55 screen: 0
direct rendering: No (If you want to find out why, try setting
LIBGL_DEBUG=verbose)
server glx vendor string: SGI
server glx version string: 1.2
server glx extensions:
GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_OML_swap_method, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_hyperpipe, GLX_SGIX_swap_barrier,
GLX_SGI_make_current_read
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
client glx extensions:
GLX_ARB_context_flush_control, GLX_ARB_create_context,
GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness,
GLX_ARB_fbconfig_float, GLX_ARB_get_proc_address, GLX_ARB_multisample,
GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile,
GLX_EXT_create_context_es_profile, GLX_EXT_fbconfig_packed_float,
GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_stereo_tree,
GLX_EXT_swap_control, GLX_EXT_swap_control_tear,
GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_NV_copy_buffer, GLX_NV_copy_image, GLX_NV_delay_before_swap,
GLX_NV_float_buffer, GLX_NV_multisample_coverage, GLX_NV_present_video,
GLX_NV_swap_group, GLX_NV_video_capture, GLX_NV_video_out,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_swap_control,
GLX_SGI_video_sync
GLX version: 1.2
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig
OpenGL vendor string: Mesa project: www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.2 (1.5 Mesa 6.4.1)
---
On my local box, I get:
$ glxinfo
name of display:
/private/tmp/com.apple.launchd.vDdJxiOxqs/org.macosforge.xquartz:0
display: /private/tmp/com.apple.launchd.vDdJxiOxqs/org.macosforge.xquartz:0
screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_OML_swap_method, GLX_SGIS_multisample,
GLX_SGIX_fbconfig
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float,
GLX_ARB_framebuffer_sRGB, GLX_ARB_get_proc_address, GLX_ARB_multisample,
GLX_EXT_buffer_age, GLX_EXT_create_context_es2_profile,
GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_INTEL_swap_event, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer,
GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control,
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGIX_visual_select_group, GLX_SGI_make_current_read,
GLX_SGI_swap_control, GLX_SGI_video_sync
GLX version: 1.4
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_MESA_multithread_makecurrent, GLX_OML_swap_method,
GLX_SGIS_multisample, GLX_SGIX_fbconfig
OpenGL vendor string: Intel
OpenGL renderer string: Intel(R) Iris(TM) Graphics 6100
OpenGL version string: 2.1 INTEL-10.6.33
OpenGL shading language version string: 1.20
Paraview 5.0.0 works on my local Mac, but I am not 100% sure, whether it is
using OpenGL2.
Somehow the paraview.org website is not responding right now, so I can’t
download 5.0.1 and
give it another try.
---
I also get a segmentation fault if I run with just X-Forwarding in a regular
SSH connection, without
any further information:
$ paraview
Segmentation fault (core dumped)
---
If I run in a x2go session, I get:
$ paraview
failed to get the current screen resources
QXcbConnection: XCB error: 172 (Unknown), sequence: 166, resource id: 163,
major code: 149 (Unknown), minor code: 20
Segmentation fault (core dumped)
(Where I believe the XCB error is unrelated.)
---
If I run paraview in a vglconnect session without x2go, I get the same error as
within the x2go session:
$ vglrun paraview
ERROR: In
/home/gk772/abs/paraview/src/ParaView-v5.0.1-source/VTK/Rendering/OpenGL2/vtkOpenGLRenderWindow.cxx,
line 575
vtkXOpenGLRenderWindow (0x3673960): GLEW could not be initialized.
ERROR: In
/home/gk772/abs/paraview/src/ParaView-v5.0.1-source/VTK/Rendering/OpenGL2/vtkShaderProgram.cxx,
line 399
vtkShaderProgram (0x36651f0): Shader object was not initialized, cannot attach
it.
Segmentation fault (core dumped)
> On Mon, Apr 11, 2016 at 9:56 AM, Ken Martin <ken.mar...@kitware.com> wrote:
> As I understand it VirtualGL should transparently forward OpenGL/GLX/etc
> calls from the server to the client so that the client GPU is used. So my
> guess would be to first try running PV on the client and see if it works. If
> that seems to work fine then you know your client graphics supports PVs use
> of OpenGL and the issue could be in VirtualGL or some PV/VirtualGL
> interaction.
I am always confused with this server and client terminology in the X context.
The remote machine, where I try to run paraview on has a relatively strong
nVidia graphics card,
which we would like to utilize via the virtualgl mechanism.
With the x2go we also try to keep the X-server on that box as much as possible,
thus we have both,
the X-server and the paraview application running there. As far as I understand
it, the graphics
capabilities of my local laptop should not really matter that much in this
scenario.
I probably should try and run paraview on the box itself, but as I said above,
it is not that easily
accessible.
Thanks a lot!
Harald
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