[petsc-users] petsc binary matrix file for dense matrices

[Umut Tabak]

On 04/10/2012 01:55 PM, Jed Brown wrote:
> On Tue, Apr 10, 2012 at 04:27, Umut Tabak <u.tabak at tudelft.nl 
> <mailto:u.tabak at tudelft.nl>> wrote:
>
>     I first had a look at the MATLAB routines to read and write the
>     matrices as examples and MatLoad function manual. I got the idea
>     however I have a question regarding the write operation for dense
>     matrices, in MATLAB code, it is given as
>
>        [m,n] = size(A);
>        write(fd,[1211214,m*n],'int32');
>        write(fd,A,'double');
>
>
> I suggest just using
Dear Jed,

I looked at the MATLAB codes as an example, I should interface my 
matrices which are in the C++ code(they are MTL4 compressed or dense 
matrices), so they are not in MATLAB.

However, I guess I should use the format given on MatLoad page whether 
the matrices are sparse or dense.

I wrote a simple test case which writes the matrix in binary format, 
which in this case a sparse matrix, now I guess I can use the same 
routine to write a dense matrix as far as I could understand from 
MatLoad(There is no separate specification for a dense matrix, right?).

Best,
U.
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