Yes, it is correct. In that code I define a very small mesh just to inspect the values of the matrix. The same variables in Matlab are: mu_bar = 0.346930948820870 0.283267933530252 0.200300676691942 0 0 B_mu = (1,1) 1.377548049348976 (2,1) 0.655870455292249 (1,2) 0.655870455292249 (2,2) 2.344153409095711 (3,2) 0.506503005236205 (2,3) 0.506503005236205 (3,3) 1.641943147430029 (4,3) 0.280003094180926 (3,4) 0.280003094180926 (4,4) 0.405861612962805 You can see that even though mu_bar is the same as the one obtained from firedrake, the matrix entries are different. I don't understand why.. The rest of the matrices, i.e. M, A and C_lam, have the same entries as in firedrake. Thanks, Anna. On 08/06/16 14:38, Fabio Luporini wrote:

Hello Anna,

under the Inequality constraint folder, I'm running "python buoy-swe.py" and, besides the TSFC/COFFEE prints, I'm obtaining:

mu_bar ------ [ 0.34693095 0.28326793 0.20030068 0. -0. ]

Matrix b_mu ----------- [[ 1.37331778 0.6536432 0. 0. 0. ] [ 0.6536432 2.33042494 0.50155807 0. 0.] [ 0. 0.50155807 1.54031885 0.20775216 0.] [ 0. 0. 0.20775216 0.20775216 0. ] [ 0. 0. 0. 0. 0. ]]

What values do you expect for b_mu ? Am I running the right thing?

I tried switching off some optimisations but I still get the same output.

Thanks!

-- Fabio

2016-06-08 15:16 GMT+02:00 Anna Kalogirou <a.kalogirou@leeds.ac.uk <mailto:a.kalogirou@leeds.ac.uk>>:

Hi Fabio,

Sorry for that. It should be public now.

Anna.

On 08/06/16 13:56, Fabio Luporini wrote:

...

Hello Anna,

the code is not accessible as it appears to be in a private repository. Could you fix this? Thanks

-- Fabio

2016-06-08 14:10 GMT+02:00 Anna Kalogirou <a.kalogirou@leeds.ac.uk <mailto:a.kalogirou@leeds.ac.uk>>:

Dear all,

I have a simple question regarding a matrix assembly in Firedrake which I believe is not computed correctly.

The relevant code can be found here <https://bitbucket.org/annakalog/buoy2d/src/14334d3c20b9f10ed7c1246cde9e3cb60b1c75e4/Inequality%20constraint/?at=master> and the issue is with the B_mu matrix in solvers.py, line 51. I compare the result with my own Matlab code and the two don't agree. Also, the rest of the matrices M, A, C_lam agree in both sets of code.

Can someone help with what the problem might be?

Thanks,

Anna.

--

Dr Anna Kalogirou Research Fellow School of Mathematics University of Leeds

http://www1.maths.leeds.ac.uk/~matak/ <http://www1.maths.leeds.ac.uk/%7Ematak/>

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