[Trilinos-Users] ML parameters list

[Raymond Tuminaro]

Andrea,
    Sorry about the confusion. There was a slight change which should be
easy to incorporate in your code. You will see this discussed in the ML
user's guide (mlguide.pdf in the packages/ml/doc directory). If you search
on 'rcp' you will find the relevant material (e.g. page 15). Unfortunately,
this change did not get reflected in an updated copy of the Trilinos Tutorial.
We'll try and get that taken care of for a future Trilinos release.

-Ray


andrea3.villa at mail.polimi.it wrote:
> Good evening.
> I have a problem using ML. I have used a slight modification of the
> implementation quoted in the Trilinos Users Guide:
> 
>         MLList = new Teuchos::ParameterList("A matrix preconditioner");
>         ML_Epetra::SetDefaults("DD", *MLList);
>         MLList->set("max levels",2);
>         MLList->set("increasing or decreasing","increasing");
>         MLList->set("aggregation: type","ParMETIS");
>         MLList->set("aggregation: nodes per aggregate", 1000);
>         MLList->set("smoother: pre or post","both");
>         MLList->set("coarse: type","Amesos-KLU");
>         MLList->set("smoother: type","Aztec");
> 
>         int optionsSmoother[AZ_OPTIONS_SIZE];
>         double paramsSmoother[AZ_PARAMS_SIZE];
>         AZ_defaults(optionsSmoother, paramsSmoother);
>         optionsSmoother[AZ_precond]         = AZ_dom_decomp;
>         optionsSmoother[AZ_subdomain_solve] = AZ_ilut;
> 
> 
> Unfortunately I get the following error:
> 
> 
>         Error, the parameter {name="smoother: Aztec
> options",type="int*",value="0x7fff592775f0"}
>         in the parameter (sub)list "DD default values"
>         exists in the list of valid parameters but has the wrong type.
> 
>         The correct type is "RCP<std::vector<int, std::allocator<int> >>".
> 
>         Throw number = 1
> 
> Do I made any mistake or the MLList usage has changed?
> I appreciate every suggestion.
> Best regards.
> Andrea.
> 
> 
> 
> 
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-- 
Ray Tuminaro                      phone: (925) 294-2564
MS 9159                           fax:   (925) 294-2234
Sandia National Laboratories      email: rstumin at sandia.gov
PO Box 969                        http://www.cs.sandia.gov/~rstumin
Livermore, CA 94551