# Using Paraview in parallel
**URL:** https://discourse.paraview.org/t/using-paraview-in-parallel/14794
**Category:** ParaView Support
**Created:** [June 7, 2024, 6:57am UTC](https://discourse.paraview.org/t/using-paraview-in-parallel/14794 "2024-06-07T06:57:53Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@akshay0809](https://discourse.paraview.org/u/akshay0809)
#### Post date: [June 7, 2024, 6:57am UTC](https://discourse.paraview.org/t/using-paraview-in-parallel/14794/1 "2024-06-07T06:57:53Z")
Hello,
I am trying to use paraview in a HPC environment. I want to utilize GPUs for rendering and also use multiple cores for performing quicker calculations . I have previously tried running using **mpirun -np 24 pvserver** , but it didn’t help in calculation speedup. Though paraview is showing the multiple processors (view → memory inspector), it seems that it is using only 1 processor for performing the whole calculation and it is not parallelizing it. When comparing the time taken to perform a calculation in my local laptop to the HPC server, my local paraview is faster. I am not sure if I am loading paraview correctly on my HPC environment. If you can help me troubleshoot this issue, it would be great !
Regards,
Akshay
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 7, 2024, 8:09am UTC](https://discourse.paraview.org/t/using-paraview-in-parallel/14794/2 "2024-06-07T08:09:16Z")
There can be multiple reasons but the most important thing is to diagnose and understand what is taking a long time.
See this blog: [https://www.kitware.com/paraview-hpc-scalability-guide/](https://www.kitware.com/paraview-hpc-scalability-guide/)