# Issue with remote volume rendering using OptiX pathtracer
**URL:** https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984
**Category:** ParaView Support
**Tags:** vtk
**Created:** [September 13, 2021, 1:07pm UTC](https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984 "2021-09-13T13:07:42Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@ma-sadeghi](https://discourse.paraview.org/u/ma-sadeghi)
#### Post date: [September 13, 2021, 1:07pm UTC](https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984/1 "2021-09-13T13:07:42Z")
Hi,
I’m trying to do remote volume rendering of a simple TIF volumetric image, but upon activating ray tracing using the OptiX pathtracer, I get the following error message serverside:
```bash
( 356.520s) [pvserver] VisRTXBackend.h:88 ERR| Error: The VisRTX backend does not currently support volumetric models
```
Would really appreciate it if someone could weigh in.
Thanks,
Amin
---
### Author:  [@Dave\_DeMarle](https://discourse.paraview.org/u/Dave_DeMarle)
#### Post date: [September 13, 2021, 7:27pm UTC](https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984/2 "2021-09-13T19:27:41Z")
Remote rendering is unrelated. Volume rendering is still unimplemented (I believe) for the OptiX pathtracer. OSPRay’s pathtracer started to support volume rendering in ParaView 5.9. OSPRay’s raycaster has had it since 5.2 or so.
---
### Author:  [@ma-sadeghi](https://discourse.paraview.org/u/ma-sadeghi)
#### Post date: [September 14, 2021, 1:58am UTC](https://discourse.paraview.org/t/issue-with-remote-volume-rendering-using-optix-pathtracer/7984/3 "2021-09-14T01:58:40Z")
Thank you so much 🙂