Is Metis needed?

[Daniel Herrera C]

Hi,

I'm using ceres in windows. SuiteSparse builds fine with the suitesparse-metis-for-windows project but I just noticed that it is not using metis. Does this affect ceres or can metis be left out without any performance hit?

Thanks, D.

[Sameer Agarwal]

depends on the sparsity of your matrix. If nested dissection will actually help you.
though metis has really weird memory consumption behaviour and it can take the whole solver down - suitesparse tries to work around it. Generally speaking AMD gives pretty decent performance and you can stay away from metis.

Sameer

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[Daniel Herrera C]

Alright. Sounds like I can survive without it. Thanks.

D.