# use vtkPStreamTracer demo
**URL:** https://discourse.paraview.org/t/use-vtkpstreamtracer-demo/13832
**Category:** ParaView Support
**Tags:** vtk
**Created:** [January 31, 2024, 3:13am UTC](https://discourse.paraview.org/t/use-vtkpstreamtracer-demo/13832 "2024-01-31T03:13:48Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Sun](https://discourse.paraview.org/u/Sun)
#### Post date: [January 31, 2024, 3:13am UTC](https://discourse.paraview.org/t/use-vtkpstreamtracer-demo/13832/1 "2024-01-31T03:13:48Z")
Dear Sir
Hello, I saw that you submitted a class called vtkPStreamTracer on GitHub, which is about streamline parallel computing. I would like to know how it supports streamline parallel computing on multiple machines and processes, as well as how it splits and merges data. There are no relevant examples available online, which makes it very difficult for me to use. Can you provide me with an example of streamline parallel computing, a small demo. I will be very grateful to you.
best.
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [January 31, 2024, 8:53am UTC](https://discourse.paraview.org/t/use-vtkpstreamtracer-demo/13832/2 "2024-01-31T08:53:57Z")
- run distributed pvserver : `mpirun -np 2 ./bin/pvserver`
- run ParaView
- connect to server
- Wavelet, Apply
- RandomVectors, Apply
- StreamTracer, Apply
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### Author:  [@Sun](https://discourse.paraview.org/u/Sun)
#### Post date: [February 20, 2024, 6:16am UTC](https://discourse.paraview.org/t/use-vtkpstreamtracer-demo/13832/3 "2024-02-20T06:16:08Z")
So can you give me an example of using vtkPStreamTracer，Use alone, detached from paraView
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [February 20, 2024, 9:42am UTC](https://discourse.paraview.org/t/use-vtkpstreamtracer-demo/13832/4 "2024-02-20T09:42:00Z")
So, is that a VTK question ?
> **[VTK](https://discourse.vtk.org/)**
>
> A place to discuss VTK development