[Trilinos-Users] [EXTERNAL] Tpetra::MatrixMarket: Write and Read MultiVector

[Andrey Prokopenko]

Hi Sander,

I believe that was fixed (see 
https://software.sandia.gov/bugzilla/show_bug.cgi?id=6264).
Which version of Trilinos do you use?

-Andrey
On 02/06/2015 02:25 AM, Sander Schaffner wrote:
> Hi
>
> I'm trying to write a MultiVector with 
> Tpetra::MatrixMarket::Writer.writeDenseFile. The goal is to read the 
> same MultiVector afterwards with 
> Tpetra::MatrixMarket::Reader.readDenseFile. But there are some reasons 
> why this doesn't work:
>
> If i generate a MultiVector with two Vectors (dimension 128) where the 
> first holds the values 0 and the second 1 I get this output on 32 cores:
>
> %%MatrixMarket matrix array real general
> 128 2
> 0
> 0
> 0
> 0
>
> 1
> 1
> 1
> 1
>
> 0
> 0
> 0
> 0
>
> 1
> 1
> 1
> 1
>
> and so on. So I get first the local part of processor 0 for both 
> Vectors and so on.
>
> The reader does not accept this file. It complains about the spaces. 
> If I manually get ridd of them it reads the file. But then it handles 
> the first half of the values as Vector 1 and the second part as Vector 
> 2. So in the End we have the following:
>
> [0 0 0 0 0 ... 0] -> [0 0 0 0 1 1 1 1 ...]
> [1 1 1 1 ... 1] -> [0 0 0 0 1 1 1 1 ...]
>
> Is there a way of directly read in a MatrixMarket file created by the 
> Writer? What other options are there to write/read MultiVectors?
>
> Any help is appreciated.
>
> Sander
> _______________________________________________
> Trilinos-Users mailing list
> Trilinos-Users at software.sandia.gov
> https://software.sandia.gov/mailman/listinfo/trilinos-users