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Re: IDADENSE linear solver

From: Kai Torben Ohlhus
Subject: Re: IDADENSE linear solver
Date: Mon, 9 Mar 2020 10:22:51 +0900
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0

On 3/8/20 4:16 AM, Vikram Garg wrote:
> Hello,
>          I am trying to use the ode15i function. This needs the sundials
> library. On configuring with options to point to sundials libraries, I
> get the following warning:
> configure: WARNING: KLU library not found.  This will result in some
> lack of functionality for sparse matrices.
> *configure: WARNING: SUNDIALS IDA library does not include the IDADENSE
> linear solver, ode15i and ode15s will be disabled*
> configure: WARNING: SUNDIALS IDA library not configured with IDAKLU,
> ode15i and ode15s will not support the sparse Jacobian feature
> I have looked around online for a resolution to this issue and have not
> found a usable solution. I am getting sundials by cloning from their git
> repository, and am configuring with the octave-5.2.0 configure script.
> Thanks.
> Vikram Garg

You probably have to compile Sundials 2.7.0 on you system before
compiling Octave 5.2.0 to detect KLU properly.  A good example how to
compile Sundials, especially which options are necessary, is given in
the MXE repository [1,2].



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