# NVIDIA Index issues ParaView 5.11.2 EGL

**URL:** https://discourse.paraview.org/t/nvidia-index-issues-paraview-5-11-2-egl/13048
**Category:** ParaView Support
**Created:** [October 16, 2023, 3:57pm UTC](https://discourse.paraview.org/t/nvidia-index-issues-paraview-5-11-2-egl/13048 "2023-10-16T15:57:33Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![absrocks](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/a/e495f1/32.png) [@absrocks](https://discourse.paraview.org/u/absrocks)
#### Post date: [October 16, 2023, 3:57pm UTC](https://discourse.paraview.org/t/nvidia-index-issues-paraview-5-11-2-egl/13048/1 "2023-10-16T15:57:33Z")

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Hi,  
I installed the ParaView Server for Headless Machines on the cluster and enabled the pvNVIDIA Index filter, but when I connected my data and selected NVIDIA INDEX representation, I got the following error. Our cluster has NVIDIA A100 GPU and CUDA 11.

nvindex: 0.1 CUDA rend info : Found 1 CUDA device.  
nvindex: 0.1 CUDA rend info : Found 1 CUDA device.  
nvindex: 0.1 CLUSTR net info : Networking is switched off.  
( 222.971s) [pvserver.0] vtkOutputWindow.cxx:78 ERR| nvindex: 1.0 INDEX main error: Cannot enable networking due to license restrictions. Please start with networking mode OFF.

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### Author: ![danlipsa](https://discourse.paraview.org/user_avatar/discourse.paraview.org/danlipsa/32/1563_2.png) [@danlipsa](https://discourse.paraview.org/u/danlipsa)
#### Post date: [October 16, 2023, 4:45pm UTC](https://discourse.paraview.org/t/nvidia-index-issues-paraview-5-11-2-egl/13048/2 "2023-10-16T16:45:28Z")

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Only the free license is bundled with ParaView. This is the version described on NVidia site:  
“For usage in a workstation, or single server node, the plug-in is available at no cost.”

To run on several nodes, you need a license from NVidia.

Regarding the license, on the NVidia web site they say:

[https://www.nvidia.com/en-us/data-center/index-paraview-plugin/](https://www.nvidia.com/en-us/data-center/index-paraview-plugin/)

" … the Cluster edition of the plug-in is available at no cost to academic users and with a license for commercial users."

Here is information on how to set the license key:

[https://www.mn.uio.no/astro/english/services/it/help/visualization/paraview/nvidia-index-paraview-plugin-user-guide-5.8.pdf](https://www.mn.uio.no/astro/english/services/it/help/visualization/paraview/nvidia-index-paraview-plugin-user-guide-5.8.pdf)

Section 3.2.2.1

So, you might be able to get a licence at no cost if you qualify or you’ll have to pay for it.

Dan

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### Author: ![steve\_r](https://discourse.paraview.org/user_avatar/discourse.paraview.org/steve_r/32/8305_2.png) [@steve\_r](https://discourse.paraview.org/u/steve_r)
#### Post date: [October 19, 2023, 3:31pm UTC](https://discourse.paraview.org/t/nvidia-index-issues-paraview-5-11-2-egl/13048/3 "2023-10-19T15:31:37Z")

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The default IndeX license in ParaView 5.11 (and earlier) enables single-GPU rendering only, and does not permit IndeX GPU “cluster” rendering.

In other words, if you start Paraview headless on a single GPU node, you should be able to use Paraview IndeX in client/server mode if you use a thin client without a CUDA GPU (or disable client side rendering to enforce use of the remote GPU).