Dear Subhasisa, This message indicates that Nektar++ is not compiled with support for the ARPACK library. Some parts of this tutorial use Arnoldi algorithms from the ARPACK library, so compiling with this library is essential for these steps. To compile with ARPACK, make sure you have the ARPACK library installed on your system (e.g. package libarpack2-dev on Debian/Ubuntu) and then enable the NEKTAR_USE_ARPACK option in the CMake configuration and recompile. Kind regards, Chris On 30/08/2022 15:01, subhasisar@campus.technion.ac.il wrote:
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Hello,
I am getting an error message while simulating a Nektar++ tutorial "Global Stability Analysis: Channel Flow". $NEK/IncNavierStokesSolver Channel-VCS.xml Fatal : Level 0 assertion violation Value 'Arpack' is not valid for property 'DRIVER'
May I know how to solve this issue?
Best, Subhasisa
------------------------------------------------------------------------ *From:* Subhasisa Rath <subhasisar@campus.technion.ac.il> *Sent:* Sunday, August 21, 2022 5:03 PM *To:* nektar-users@imperial.ac.uk <nektar-users@imperial.ac.uk> *Subject:* Installation of Nektar++ on Ubuntu 22.04 Hello. I am Dr Subhasisa Rath from Technion - Israel Institute of Technology. I would like to install nektar++ on my Ubuntu 22.04 OS. I am not able to find any source-code for this OS. May I know whether I can install or not on OS?
Best, Subhasisa
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-- Chris Cantwell Senior Lecturer in Aeronautics Department of Aeronautics Imperial College London South Kensington Campus London SW7 2AZ Tel: +44 (0)20 759 45050 Email: c.cantwell@imperial.ac.uk www.imperial.ac.uk/people/c.cantwell