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Hello everyone,
I checked the SOFA_BUILD_METIS item in CMake to compile and use the SparseLDLSolver. But when I launch the FEMBAR-SparseLDLSolver.scn, the scene still cannot run properly and always output the message:”Failed to factorize, D(k,k) is zero”
So how to correctly use it?
Wong
Hi @outtt
which version are you using ? 18.06 ?
This should be fixed in 18.12. I will gather more info about this issue with the devs.Best
Hugo
Hmm ok it means this might have been fixed in master since then
I’ll investigate and let you know.Best
Hugo
Hello,
I compiled sofa master, with metis and SofaSparseSolver plugin and tried the scene.
It worked without problem on my ubuntu.
Can you gives us more details on your setup/OS so we can narrow the investigation ?Damien.
Hello @damien-marchaluniv-lille1-fr
I use Sofa v18.12 on Win10 64bits. How do you configure your metis in CMake?
Wong
Hi @outtt
Did you face any issue in the CMake configuration with METIS?
Like Damien, I successfully run the scene.Hugo
Hello @damien-marchaluniv-lille1-fr and @hugo
I have solved the problem.
I think it is a bug on Windows.
In Visual Studio, such statement at SparseLDLSolverImpl.h, as is shown below, would be omitted in compilation process.
If I comment out
//#include <metis.h>at SparseLDLSolverImpl.h, project SofaSparseSolver can still be built successfully.So I make a line feed before that statement and then build. The scene can miraculously work! I do not know why.
Wong
Hello,
Thanks for the details.
To me this is a very strange behavior.Some extra questions:
– which compiler version are you using ?
– did you installed metis yourself, would it be possible that there is a version mismatch between the library you link against and the sofa build ?Damien
Hello @damien-marchaluniv-lille1-fr
My compiler is VS2015 and it is the built-in metis version in Sofa.
Wong
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