[Trilinos-Users] Epetra_FEVector ReplaceGlobalValue

[Williams, Alan B]

Simone,

It is a hard problem, there is no good way to have GlobalAssemble manage
a mixture of Adds and Replaces. But adding the CombineMode argument
would allow a user to switch "modes". I'll make the change and let you
know when it's done.

Alan
 

> -----Original Message-----
> From: trilinos-users-bounces at software.sandia.gov 
> [mailto:trilinos-users-bounces at software.sandia.gov] On Behalf 
> Of Simone Deparis
> Sent: Thursday, November 10, 2005 1:26 PM
> To: trilinos-users at software.sandia.gov
> Subject: [Trilinos-Users] Epetra_FEVector ReplaceGlobalValue
> 
> In Epetra_FEVector, the method  ReplaceGlobalValue does 
> actually _not_ replace a remote values, it will add it:
> 
> line 346 of Epetra_FEVector.cpp, method globalAssemble
>    EPETRA_CHK_ERR( Export(nonlocalVector, exporter, Add) );
> 
> One possible, but still buggy, solution can be to change the 
> method global assemble to ( in .h)
> 
>     int GlobalAssemble(const Epetra_CombineMode& CombineMode = Add);
> 
> and then modify the header of the method to int 
> Epetra_FEVector::GlobalAssemble(const Epetra_CombineMode& 
> CombineMode) and line 346 becomes:
>    EPETRA_CHK_ERR( Export(nonlocalVector, exporter, CombineMode) );
> 
> As said, this is still buggy, but at least give me the chance 
> to decide wether to replace or add the remote values.
> 
> 
> Simone
> 
> 
> 
> -- 
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