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[Nuno Lopes <question95433@xxxxxxxxxxxxxxxxxxxxx>]

New question #95433 on DOLFIN:
https://answers.launchpad.net/dolfin/+question/95433

Hi!

I've been updating my dolfwave code from dolfin 0.9.2 to 0.9.5.
Apart from some CGAL problems it is working, and 
I'm able to run  some of the demos now.
I've noticed a major slowdown from 0.9.2 to 0.9.5 (in my codes)
Is this a known issue?

I note that the  solutions are the same for both versions.
Using UMFPACK with factorized_solve I have
the following summary of timings:

dolfin 0.9.2:
Summary of timings        |  Average time  Total time  Reps
-----------------------------------------------------------
Assemble cells                  |     0.0046482        6.87  1478
Assemble exterior facets |         0.005           0.01     2
Build sparsity                     |    9.4723e-05       0.14   1478
Delete sparsity                  |    6.7659e-05        0.1    1478
Init dof map                        |             0                   0      11
Init tensor                           |    6.7659e-06        0.01  1478
LU solver                           |          0.02             0.02     1
X:DOLFWAVE:END        |          7.64             7.64      1

and for dolfin  0.9.5:
Summary of timings          |  Average time  Total time  Reps
-----------------------------------------------------------
Assemble cells                   |      0.011779       17.41   1478
Assemble exterior facets  |         0.005            0.01     2
Build sparsity                      |    6.7659e-06        0.01  1478
Delete sparsity                   |             0                 0         1478
Init tensor                            |             0                 0          1478
LU solver                             |          0.03              0.03     1
X:DOLFWAVE:END           |         85.12            85.12   1

Any ideas?!

N.Lopes

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