# Bus error
**URL:** https://discourse.paraview.org/t/bus-error/10805
**Category:** In Situ Support
**Created:** [November 18, 2022, 11:51am UTC](https://discourse.paraview.org/t/bus-error/10805 "2022-11-18T11:51:29Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Alexander](https://discourse.paraview.org/u/Alexander)
#### Post date: [November 18, 2022, 11:51am UTC](https://discourse.paraview.org/t/bus-error/10805/1 "2022-11-18T11:51:29Z")
Hello. I have problems when i’m trying to run catalyst example
```auto
[MacBook-Pro:26878] ***Process received signal***
[MacBook-Pro:26878] Signal: Bus error: 10 (10)
[MacBook-Pro:26878] Signal code: Non-existant physical address (2)
[MacBook-Pro:26878] Failing at address: 0x10c1707e3
[MacBook-Pro:26878] [0] [MacBook-Pro:26880] ***Process received signal***
[MacBook-Pro:26880] Signal: Bus error: 10 (10)
[MacBook-Pro:26880] Signal code: Non-existant physical address (2)
[MacBook-Pro:26880] Failing at address: 0x1046457e3
[MacBook-Pro:26880] [0] [MacBook-Pro:26881] ***Process received signal***
[MacBook-Pro:26881] Signal: Bus error: 10 (10)
[MacBook-Pro:26881] Signal code: Non-existant physical address (2)
[MacBook-Pro:26881] Failing at address: 0x109f3d7e3
[MacBook-Pro:26881] [0] 0 libsystem_platform.dylib 0x00007ff8071eddfd _sigtramp + 29
[MacBook-Pro:26878] [1] 0 ??? 0x00007ff7b3db8b98 0x0 + 140701851159448
[MacBook-Pro:26878] [2] [MacBook-Pro:26879] ***Process received signal***
[MacBook-Pro:26879] Signal: Bus error: 10 (10)
[MacBook-Pro:26879] Signal code: Non-existant physical address (2)
[MacBook-Pro:26879] Failing at address: 0x1066377e3
[MacBook-Pro:26879] [0] 0 libsystem_platform.dylib 0x00007ff8071eddfd _sigtramp + 29
[MacBook-Pro:26879] [1] 0 libsystem_platform.dylib 0x00007ff8071eddfd _sigtramp + 29
[MacBook-Pro:26880] [1] 0 ??? 0x00007ff7bb8e3b98 0x0 + 140701980310424
[MacBook-Pro:26880] [2] 0 libsystem_platform.dylib 0x00007ff8071eddfd _sigtramp + 29
[MacBook-Pro:26881] [1] 0 ??? 0x00007ff7b5febb98 0x0 + 140701887019928
[MacBook-Pro:26881] [2] 0 ??? 0x00007ff7b98f1b98 0x0 + 140701946813336
[MacBook-Pro:26879] [2] 0 libcatalyst.3.dylib 0x0000000106d4ba45 catalyst_load + 1125
[MacBook-Pro:26879] [3] 0 libcatalyst.3.dylib 0x0000000104d59a45 catalyst_load + 1125
[MacBook-Pro:26880] [3] 0 libcatalyst.3.dylib 0x000000010a651a45 catalyst_load + 1125
[MacBook-Pro:26881] [3] 0 libcatalyst.3.dylib 0x000000010c884a45 catalyst_load + 1125
[MacBook-Pro:26878] [3] 0 libcatalyst.3.dylib 0x000000010a65155e catalyst_initialize + 110
[MacBook-Pro:26881] [4] 0 libcatalyst.3.dylib 0x000000010c88455e catalyst_initialize + 110
[MacBook-Pro:26878] [4] 0 libcatalyst.3.dylib 0x0000000106d4b55e catalyst_initialize + 110
[MacBook-Pro:26879] [4] 0 libcatalyst.3.dylib 0x0000000104d5955e catalyst_initialize + 110
[MacBook-Pro:26880] [4] 0 CxxFullExampleV2 0x000000010c150b7d _ZN15CatalystAdaptor10InitializeEiPPc + 573
[MacBook-Pro:26878] [5] 0 CxxFullExampleV2 0x0000000106617b7d _ZN15CatalystAdaptor10InitializeEiPPc + 573
[MacBook-Pro:26879] [5] 0 CxxFullExampleV2 0x0000000104625b7d _ZN15CatalystAdaptor10InitializeEiPPc + 573
[MacBook-Pro:26880] [5] 0 CxxFullExampleV2 0x0000000109f1db7d _ZN15CatalystAdaptor10InitializeEiPPc + 573
[MacBook-Pro:26881] [5] 0 CxxFullExampleV2 0x000000010c1528d9 main + 185
[MacBook-Pro:26878] [6] 0 CxxFullExampleV2 0x00000001066198d9 main + 185
[MacBook-Pro:26879] [6] 0 CxxFullExampleV2 0x00000001046278d9 main + 185
[MacBook-Pro:26880] [6] 0 CxxFullExampleV2 0x0000000109f1f8d9 main + 185
[MacBook-Pro:26881] [6] 0 dyld 0x0000000116d0051e start + 462
[MacBook-Pro:26878] ***End of error message***
0 dyld 0x000000010cfe851e start + 462
[MacBook-Pro:26879] ***End of error message***
0 dyld 0x000000010b3c451e start + 462
[MacBook-Pro:26880] ***End of error message***
0 dyld 0x000000010f53151e start + 462
[MacBook-Pro:26881] ***End of error message***
--------------------------------------------------------------------------
mpirun noticed that process rank 3 with PID 0 on node MacBook-Pro exited on signal 10 (Bus error: 10).
--------------------------------------------------------------------------
```
As far as I understand, the problem occurs when executing the CatalystAdaptor::Execute(timestamp, time, grid, attributes). It doesn’t matter if I run on one processor or several - the problem still remains. Could you tell me how this can be solved? Thanks
I’m using paraview v 5.10.1, example is [https://gitlab.kitware.com/paraview/paraview/-/tree/v5.10.1/Examples/Catalyst2/CxxFullExample](https://gitlab.kitware.com/paraview/paraview/-/tree/v5.10.1/Examples/Catalyst2/CxxFullExample)
---
### Author:  [@ben.boeckel](https://discourse.paraview.org/u/ben.boeckel)
#### Post date: [December 7, 2022, 12:18am UTC](https://discourse.paraview.org/t/bus-error/10805/2 "2022-12-07T00:18:11Z")
Uhh. Bus errors usually mean something went _very_ wrong with pointers. Can you perhaps stick a debugger on this to see where it might be going badly?