gt; CIMEC (INTEC/CONICET-UNL)
> Predio CONICET-Santa Fe
> Colectora RN 168 Km 472, Paraje El Pozo
> 3000 Santa Fe, Argentina
> Tel: +54-342-4511594 (ext 1011)
> Tel/Fax: +54-342-4511169
>
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On 15 August 2012 14:13, Xin Zhao wrote:
> Dear all,
>
> What I need is just to solve a very easy linear ODE.
>
> u_t = Au
>
> A is sparse and constant.
>
> But I didn't find a counterpart of TSSetMatrices in petsc4py for this.
> It is strange because petsc4py can handle much harder problems.
>
T
Hi,
I figured it out, and it was my fault...
I was not zeroing out the matrix before assembling the Jacobian. Once I did
this, every linesearch converges and each SNES converge in 1 iteration, as
expected.
Sorry for the confusion.
Blaise
On Aug 15, 2012, at 10:51 AM, Barry Smith wrote:
>
>
Blaise,
We are confused. Can you run both the bt and l2 with all those options and
send ALL the output from each of the two runs.
Thanks
Barry
On Aug 14, 2012, at 6:24 PM, Blaise Bourdin wrote:
> Hi,
>
>
> On Aug 14, 2012, at 5:58 PM, Barry Smith wrote:
>
>>
>> Blais
th small number of processors, e.g., 4, 16 etc.
If superlu_dist hangs, does mumps also hang?
** **
>
> Does anybody have similar experience on that?
>
Segmentation fault occurs for various reasons.
Give a try to mumps first.
Hong
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