MPIDense*MPIDense

[Yujie]

Dear Barry:

You mean B*A11 works in parallel mode if B and A11 have different
distribution? Its distribution is decided by the row ownership of B and the
column ownership of A11? thanks a lot.

Regards,

Yujie

On Tue, Dec 30, 2008 at 1:54 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
> On Dec 30, 2008, at 3:27 PM, Yujie wrote:
>
>  Dear Barry:
>>
>> thank you for your reply. MatMatMult() uses Plapcak package for Dense
>> matrices?
>>
>>   In the parallel case, for sequential it uses LAPACK
>
>>
>> In addition, about MatGetSubMatrix() and submatrix multiplcation problems,
>> could you give me some advice?
>>
>> "if the distribution of A11 and B is different, it will not work if I do
>> B*A11? if it work,  what is the distribution of B*A11?"
>>
>>
> The row ownership of B and the column ownership of A11
>
>> thanks a lot. Happy holiday:).
>>
>> Regards,
>>
>> Yujie
>>
>>
>>
>>
>>
>> On Tue, Dec 30, 2008 at 12:28 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>>
>>  In theory it is all there. Just do MatMatMult() with your dense matrices
>>
>>  Barry
>>
>>
>> On Dec 29, 2008, at 1:55 PM, Yujie wrote:
>>
>> Hi,
>>
>> I am wondering whether it have been realized in PETSc to do
>> MPIDense*MPIDense? thanks a lot. Happy holiday:).
>>
>> Regards,
>>
>> Yujie
>>
>>
>>
>>
>
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