I am using solid elements and here's what I get for the smallest problem
with -pc_type svd -pc_svd_monitor
SVD: condition number 4.184203727999e+13, 0 of 2187 singular values
are (nearly) zero
SVD: smallest singular values: 9.975131304660e-01
9.979349868120e-01 9.986761984005e-01 9.993267254639e-01 9.996135846381e-01
SVD: largest singular values : 3.933977100529e+13
3.933977100529e+13 4.162059658259e+13 4.162059658259e+13 4.173798159224e+13
Tabrez
On 08/31/2013 03:06 PM, Umut Tabak wrote:
On 08/31/2013 06:25 PM, Tabrez Ali wrote:
Hello
So I used PCSetCoordinates and now GAMG seems to work really well in
that the number of iterations are relatively constant. Here are the
number of iterations on 4 cores
DOF ASM GAMG
2187 15 22
14739 26 22
107811 51 29
Hi,
Just curious, what is the approximate condition number of this matrix,
is that modelled with domain elements like solids or thin elements
like shells?
Best,
U.
