# Installation problems

**URL:** <https://gromacs.bioexcel.eu/t/installation-problems/896>\
**Category:** User discussions\
**Created:** [September 30, 2020, 5:03pm UTC](https://gromacs.bioexcel.eu/t/installation-problems/896 "2020-09-30T17:03:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![torquato](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@torquato](https://gromacs.bioexcel.eu/u/torquato)\
**Post date:** [September 30, 2020, 5:03pm UTC](https://gromacs.bioexcel.eu/t/installation-problems/896/1 "2020-09-30T17:03:57Z")

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GROMACS version: 2020.3  
GROMACS modification: No  
Here post your question:  
vcc fatal : Unsupported gpu architecture ‘compute\_30’  
CMake Error at libgromacs\_generated\_nbnxm\_cuda.cu.o.Release.cmake:220 (message):  
Error generating  
/home/ricardo/gromacs-2020.3/build/src/gromacs/CMakeFiles/libgromacs.dir/nbnxm/cuda/./libgromacs\_generated\_nbnxm\_cuda.cu.o

nvcc fatal : Unsupported gpu architecture ‘compute\_30’  
CMake Error at libgromacs\_generated\_nbnxm\_cuda\_kernel\_F\_noprune.cu.o.Release.cmake:220 (message):  
Error generating  
/home/ricardo/gromacs-2020.3/build/src/gromacs/CMakeFiles/libgromacs.dir/nbnxm/cuda/./libgromacs\_generated\_nbnxm\_cuda\_kernel\_F\_noprune.cu.o

nvcc fatal : Unsupported gpu architecture ‘compute\_30’  
CMake Error at libgromacs\_generated\_nbnxm\_cuda\_kernel\_VF\_noprune.cu.o.Release.cmake:220 (message):  
Error generating  
/home/ricardo/gromacs-2020.3/build/src/gromacs/CMakeFiles/libgromacs.dir/nbnxm/cuda/./libgromacs\_generated\_nbnxm\_cuda\_kernel\_VF\_noprune.cu.o

I need help

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**Author:** ![pjohansson](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/pjohansson/32/316_2.png) [@pjohansson](https://gromacs.bioexcel.eu/u/pjohansson)\
**Post date:** [September 30, 2020, 7:31pm UTC](https://gromacs.bioexcel.eu/t/installation-problems/896/2 "2020-09-30T19:31:49Z")

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Hello,

as I understand it, this is related to CUDA 11 not being supported yet.

Check [this answer](https://gromacs.bioexcel.eu/t/gpu-error-during-installation-of-gromacs2019-6/803/2) for a possible workaround.

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**Author:** ![scinikhil](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/scinikhil/32/3483_2.png) [@scinikhil](https://gromacs.bioexcel.eu/u/scinikhil)\
**Post date:** [September 30, 2020, 7:44pm UTC](https://gromacs.bioexcel.eu/t/installation-problems/896/3 "2020-09-30T19:44:25Z")

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You are trying to install the cuda that is not supported for your card

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<div class="post-metadata">

**Author:** ![pszilard](https://dub1.discourse-cdn.com/flex017/user_avatar/gromacs.bioexcel.eu/pszilard/32/21_2.png) [@pszilard](https://gromacs.bioexcel.eu/u/pszilard)\
**Post date:** [October 1, 2020, 8:08am UTC](https://gromacs.bioexcel.eu/t/installation-problems/896/4 "2020-10-01T08:08:55Z")

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As @pjohansson noted this is caused by NVIDIA deprecating a GPU architecture (consumer Kepler, compute capability 3.0) that the GROMACS build systems assumes is supported and targets during compilation. To avoid the error you can override the list of architectures targeted adding `-DGMX_CUDA_TARGET_SM="35;52;60;61;70;75,80"`.

If you do have a GPU that is deprecated, you should stick to earlier CUDA versions as the binary you compile with the above workaround will anyway not function on your hardware.