[Paraview-developers] pvserver with multiple EGL devices

[Favre Jean]

Folks

I've used EGL for a long time now, but always with a single GPU. I understand it well.

I have a new cluster with *two* GPUs on the node and a more recent driver, where I compiled 5.4 with EGL and OpenMPI

Launching pvserver, and connecting I get this error:

mpirun  -np 1 ./bin/pvserver --egl-device-index=0  : -np 1 ./bin/pvserver --egl-device-index=1

Waiting for client...
Connection URL: cs://greina28:11111
Accepting connection(s): greina28:11111
Client connected.
Warning: In /users/jfavre/ParaView/ParaView-v5.4.1/VTK/Rendering/OpenGL2/vtkEGLRenderWindow.cxx, line 272
vtkEGLRenderWindow (0xed65a0): Setting an EGL display to device index: 0 require EGL_EXT_device_base EGL_EXT_platform_device EGL_EXT_platform_base extensions

ERROR: In /users/jfavre/ParaView/ParaView-v5.4.1/VTK/Rendering/OpenGL2/vtkEGLRenderWindow.cxx, line 341
vtkEGLRenderWindow (0xed65a0): Only EGL 1.4 and greater allows OpenGL as client API. See eglBindAPI for more information.

ERROR: In /users/jfavre/ParaView/ParaView-v5.4.1/VTK/Rendering/OpenGL2/vtkOpenGLRenderWindow.cxx, line 819
vtkEGLRenderWindow (0xed65a0): GLEW could not be initialized.

yet, my ./bin/pvserver depends on

    libEGL.so.1 => /usr/lib64/libEGL.so.1 (0x00002aaabc2c8000)
    libOpenGL.so.0 => /usr/lib64/libOpenGL.so.0 (0x00002aaabc4f5000)
    libGLdispatch.so.0 => /usr/lib64/libGLdispatch.so.0 (0x00002aaabc72a000)

and nvidia-smi reports a driver which should support EGL1.4 and greater.

Wed Oct 11 17:00:24 2017
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 384.59                 Driver Version: 384.59                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  Tesla P100-SXM2...  On   | 00000000:07:00.0 Off |                  Off |
| N/A   30C    P0    30W / 300W |      0MiB / 16276MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
|   1  Tesla P100-SXM2...  On   | 00000000:84:00.0 Off |                  Off |
| N/A   32C    P0    31W / 300W |      0MiB / 16276MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+


what setting should I be specifically careful with to overcome this error?

TIA
-----------------
Jean / CSCS

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