# Too many errors in geometry: run stopped

**URL:** <https://fluka-forum.web.cern.ch/t/too-many-errors-in-geometry-run-stopped/7704>\
**Category:** Running and Runtime Errors\
**Created:** [8 August 2025 13:46 UTC](https://fluka-forum.web.cern.ch/t/too-many-errors-in-geometry-run-stopped/7704 "2025-08-08T13:46:30Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![corrado.tine](https://fluka-forum.web.cern.ch/user_avatar/fluka-forum.web.cern.ch/corrado.tine/32/10379_2.png) [@corrado.tine](https://fluka-forum.web.cern.ch/u/corrado.tine)\
**Post date:** [8 August 2025 13:46 UTC](https://fluka-forum.web.cern.ch/t/too-many-errors-in-geometry-run-stopped/7704/1 "2025-08-08T13:46:31Z")

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### Versions

> Please provide the used software versions.

_FLUKA_: 4-4.1  
_Flair_: 3.3-1  
_Operating system_: Windows 10 Enterprise  
_Compiler_:

### Description

Dear FLUKA experts,

I am trying to run a simulation of a simple point source of Co-60 e Cs-137 inside a building and evaluate the dose in air spheres at different locations. I used many region around the building for setting different particle importance.

The simulation doesn’t start because of the following error message:

- Output file  
Abort called from GEOFAR reason TOO MANY ERRORS IN GEOMETRY: STOP Run stopped!  
STOP TOO MANY ERRORS IN GEOMETRY: STOP
- Log file  
STOP TOO MANY ERRORS IN GEOMETRY: STOP  
Note: The following floating-point exceptions are signalling: IEEE\_UNDERFLOW\_FLAG IEEE\_DENORMAL  
STOP STOP: FLUKA ABORTED

However, the geometry doesn’t report any error message.

Thank you for your help.

Corrado

### Input files

> [41i\_tot.flair](https://fluka-forum.web.cern.ch/uploads/short-url/c5icR7wZSoKr3sI5b4oKHdJ76bo.flair) (7.3 KB)  
> [41i\_tot.inp](https://fluka-forum.web.cern.ch/uploads/short-url/szVqdeCDVBLVTl82UrWgrqT4efO.inp) (6.8 KB)  
> [41i\_tot001.out](https://fluka-forum.web.cern.ch/uploads/short-url/ShywzRRBZjnBYfHUKbFZyZqjmy.out) (133.0 KB)  
> [source.f](https://fluka-forum.web.cern.ch/uploads/short-url/j3QyUmEvP7fTSDq7PF1KFUa2EsP.f) (9.1 KB)

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**Author:** ![horvathd](https://fluka-forum.web.cern.ch/user_avatar/fluka-forum.web.cern.ch/horvathd/32/10584_2.png) [@horvathd](https://fluka-forum.web.cern.ch/u/horvathd)\
**Post date:** [8 August 2025 14:05 UTC](https://fluka-forum.web.cern.ch/t/too-many-errors-in-geometry-run-stopped/7704/2 "2025-08-08T14:05:20Z")

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Dear Corrado,

your source is on a border of two region. Try to nudge it a bit in the `X` axis to avoid the error.

Cheers,  
David

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<div class="post-metadata">

**Author:** ![corrado.tine](https://fluka-forum.web.cern.ch/user_avatar/fluka-forum.web.cern.ch/corrado.tine/32/10379_2.png) [@corrado.tine](https://fluka-forum.web.cern.ch/u/corrado.tine)\
**Post date:** [8 August 2025 14:21 UTC](https://fluka-forum.web.cern.ch/t/too-many-errors-in-geometry-run-stopped/7704/3 "2025-08-08T14:21:17Z")

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Thank you David.

Cheers,  
Corrado

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<div class="post-metadata">

**Author:** ![horvathd](https://fluka-forum.web.cern.ch/user_avatar/fluka-forum.web.cern.ch/horvathd/32/10584_2.png) [@horvathd](https://fluka-forum.web.cern.ch/u/horvathd)\
**Post date:** [27 August 2025 13:24 UTC](https://fluka-forum.web.cern.ch/t/too-many-errors-in-geometry-run-stopped/7704/5 "2025-08-27T13:24:51Z")

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