# Error: CUDAERROR euler with MPI

**URL:** <https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633>\
**Category:** Errors\
**Tags:** cuda\
**Created:** [29 June 2022 19:39 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633 "2022-06-29T19:39:40Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ManuSaiVenkataRatnam](https://yyz2.discourse-cdn.com/free1/user_avatar/pyfr.discourse.group/manusaivenkataratnam/32/364_2.png) [@ManuSaiVenkataRatnam](https://pyfr.discourse.group/u/ManuSaiVenkataRatnam)\
**Post date:** [29 June 2022 19:39 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633/1 "2022-06-29T19:39:40Z")

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Hello everyone!  
I have started to use pyfr in my college cluster, when executed following code :  
\< mpiexec -n 2 pyfr run -b cuda -p euler\_vortex\_2d.pyfrm euler\_vortex\_2d.ini \>  
Got error as shown in the image below.  
\<using CUDA/11.0\>  
Could not understand how to solve this error.  
Any suggestions please.

 ![image](https://global.discourse-cdn.com/free1/uploads/pyfr/original/1X/50bf4c2120e7fbd69ae8eaade87e692458671958.png)

Thank you and regards,  
Manu.

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**Author:** ![WillT](https://avatars.discourse-cdn.com/v4/letter/w/bc79bd/32.png) [@WillT](https://pyfr.discourse.group/u/WillT)\
**Post date:** [29 June 2022 21:51 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633/2 "2022-06-29T21:51:40Z")

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The Euler vortex test case is originally for a single partition, did you re-partition it for two?

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<div class="post-metadata">

**Author:** ![ManuSaiVenkataRatnam](https://yyz2.discourse-cdn.com/free1/user_avatar/pyfr.discourse.group/manusaivenkataratnam/32/364_2.png) [@ManuSaiVenkataRatnam](https://pyfr.discourse.group/u/ManuSaiVenkataRatnam)\
**Post date:** [30 June 2022 13:40 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633/3 "2022-06-30T13:40:50Z")

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No, I partitioned it once.  
using following command:  
\<pyfr partition 2 euler\_vortex\_2d.pyfrm .\>

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<div class="post-metadata">

**Author:** ![WillT](https://avatars.discourse-cdn.com/v4/letter/w/bc79bd/32.png) [@WillT](https://pyfr.discourse.group/u/WillT)\
**Post date:** [30 June 2022 21:20 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633/4 "2022-06-30T21:20:27Z")

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Ok, can you provide more of the traceback?

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<div class="post-metadata">

**Author:** ![ManuSaiVenkataRatnam](https://yyz2.discourse-cdn.com/free1/user_avatar/pyfr.discourse.group/manusaivenkataratnam/32/364_2.png) [@ManuSaiVenkataRatnam](https://pyfr.discourse.group/u/ManuSaiVenkataRatnam)\
**Post date:** [30 June 2022 21:41 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633/5 "2022-06-30T21:41:34Z")

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please find the images of tracebacks.

 ![image](https://global.discourse-cdn.com/free1/uploads/pyfr/original/1X/8baf4751c88ce552c837e9bd3234e1dd2060ed7f.jpeg)  
 ![image](https://global.discourse-cdn.com/free1/uploads/pyfr/original/1X/1c40f43f48fa8c3dd1074693275ff1d2ff1a360d.jpeg)

Regards,  
Manu.

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<div class="post-metadata">

**Author:** ![fdw](https://avatars.discourse-cdn.com/v4/letter/f/a587f6/32.png) [@fdw](https://pyfr.discourse.group/u/fdw)\
**Post date:** [1 July 2022 12:05 UTC](https://pyfr.discourse.group/t/error-cudaerror-euler-with-mpi/633/6 "2022-07-01T12:05:09Z")

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Does a single rank simulation work?

Can you confirm if other CUDA applications work?

Regards, Freddie.