Aw: Re: [deal.II] Adding TrilinosWrapper::BlockSparseMatrix

Gabriel Peters Mon, 06 May 2019 05:50:06 -0700

Hey Jean-Paul

Thanks a lot, that's what I was looking for, and now it works finely.

Best

Gabriel

Gesendet: Montag, 06. Mai 2019 um 14:27 Uhr
Von: "Jean-Paul Pelteret" <jppelte...@gmail.com>
An: dealii@googlegroups.com
Betreff: Re: [deal.II] Adding TrilinosWrapper::BlockSparseMatrix

Dear Gabriel,

There is a function to do this operation

https://dealii.org/9.0.0/doxygen/deal.II/classBlockMatrixBase.html#a9ee9987ece33a052d2b7a44034a8a01a

So you should write this as

system_matrix.add(1.0, system_matrix_iterative);

I hope this helps.

Best,

Jean-Paul

On 06 May 2019, at 13:55, gabriel.pet...@koeln.de wrote:

Hey everyone,

I got a problem regarding TrilnosWrappers::BlockSparseMatrix.

In my program I have a TrilnosWrappers::BlockSparseMatrix system_matrix which consists of two

parts, one permanent part, which is computed at the beginning at the programm, not every iteration, to save time (called system_matrix_permanent) and one iterative part, which is computed in every iteration (called system_matrix_iterative). Hence system_matrix = system_matrix_permanent + system_matrix_iterative

Thus, after assembling those matrices, I want to call something like

system_matrix.add(system_matrix_permanent,system_matrix_permanent);

But I always get the error message

error: no matching function for call to ‘dealii::TrilinosWrappers::BlockSparseMatrix::add(dealii::TrilinosWrappers::BlockSparseMatrix&)’
system_matrix.add(system_matrix_iterative);

Is there any function which adds up TrilinosWrappers::BlockSparseMatrix objects?

Thanks a lot and best regards

Gabriel

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Aw: Re: [deal.II] Adding TrilinosWrapper::BlockSparseMatrix

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