multiple rhs

[Hong Zhang]

> Very Many Thanks for your efforts on this Barry. The PLAPACK
> website looks like it hasn't been updated since 2007. Maybe PLAPACK
> is in need of some maintenance? You said "nonsquare", is plapack working for 
> you for square matrices ?

Yes, it works for square matrices.
See ~petsc/src/mat/examples/tests/ex103.c and ex107.c

Hong
>
>
>>> 
>>> 
>>> 
>>> [0]PETSC ERROR: --------------------- Error Message 
>>> ----------------------------
>>> --------
>>> [0]PETSC ERROR: Error in external library!
>>> [1]PETSC ERROR: [0]PETSC ERROR: --------------------- Error Message 
>>> ------------
>>> ------------------------
>>> [1]PETSC ERROR: Error in external library!
>>> Due to aparent bugs in PLAPACK,this is not currently supported!
>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>>   I could not get plapack to properly handle nonsquare matrices properly 
>> for these operations.
>> I tried hard to debug but plapack is a mess of complexity, got very 
>> frustrated. If you take out the
>> generation of this error message, so the code runs, then you can try to 
>> debug plapack
>> (I am pretty sure the problem is in plapack, not in the PETSc interface).
>>
>>  Barry
>> 
>