# Different results on MacOS and remote connection
**URL:** https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436
**Category:** ParaView Support
**Created:** [February 18, 2023, 4:59pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436 "2023-02-18T16:59:19Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Frankx9](https://discourse.paraview.org/u/Frankx9)
#### Post date: [February 18, 2023, 4:59pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436/1 "2023-02-18T16:59:19Z")
Hi,
I’m running a clean to grid filter to extract a surface and I’m getting two different results if I run the algorithm on my laptop
and on remote
See the spurious zone extracted on the leading edge
Why this happens?
Regards
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### Author:  [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)
#### Post date: [February 18, 2023, 7:59pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436/2 "2023-02-18T19:59:55Z")
This could be caused by your data being partitioned across multiple processors. It might not correctly identify mesh connections across partitions.
You could try running the `Ghost Cell Generator` fitler.
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### Author:  [@Frankx9](https://discourse.paraview.org/u/Frankx9)
#### Post date: [February 19, 2023, 7:50am UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436/3 "2023-02-19T07:50:38Z")
Hi @Kenneth_Moreland
You’ve got the problem right but I was not able to solve it via
> [@Kenneth\_Moreland](#):
>
> You could try running the `Ghost Cell Generator` fitler.
This is what I’m getting
And this is the setup with `Ghost Cell Generator` filter
which is applied straight after loading the .vtu file
Do you have any further suggestion?
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### Author:  [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)
#### Post date: [February 20, 2023, 2:38pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436/4 "2023-02-20T14:38:02Z")
As I recall from [one of your previous posts](https://discourse.paraview.org/t/boundary-edges-not-recognized/11349), your data comes from a DG simulation. I don’t know the details of how `Ghost Cells Generator` works, but I suspect that once again the discontinuous nature of your data is interfering with finding correct matches.
The first thing to try is to run `Clean to Grid` _first_ and then `Ghost Cells Generator`. The generator might not be checking for duplicate points on each process.
I expect `Ghost Cells Generator` will use global ids if you have them. I would expect global ids on discontinuous boundaries would mess up the ghost cell generation. If you have them, you can try deleting them. You might be able to use the `Pass Arrays` filter to do that.
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### Author:  [@Frankx9](https://discourse.paraview.org/u/Frankx9)
#### Post date: [February 20, 2023, 9:16pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436/5 "2023-02-20T21:16:07Z")
Didn’t solve the issue, I think I’ll stick with 1 process to execute this to bypass the issue
Very grateful for the help!
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### Author:  [@wascott](https://discourse.paraview.org/u/wascott)
#### Post date: [February 20, 2023, 10:58pm UTC](https://discourse.paraview.org/t/different-results-on-macos-and-remote-connection/11436/6 "2023-02-20T22:58:22Z")
Hmmm … something feels fishy. Could you let us have the dataset?
Alan