[petsc-dev] PLAPACK problems

[Matthew Knepley]

On Wed, Mar 17, 2010 at 12:36 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>   Poor Jack, he should change his name immediately.
>

If even Robert can see past that, it tells you have fantastic Jack is.

  Matt


>    Barry
>
> On Mar 17, 2010, at 11:34 AM, Matthew Knepley wrote:
>
> On Wed, Mar 17, 2010 at 12:30 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
>
>>
>>   Some of the PETSc examples are crashing under some circumstances (like
>> with complex) using PLAPACK and valgrind is showing uninitialized variables
>> etc in PLAPACK code. I don't want to debug PLAPACK code, so will let it go
>> for this release.
>>
>>  BUT, is there something else we can move to for petsc-dev in the future.
>> Should we throw away the use of PLAPACK and use FLAMELIB? Should we switch
>> to ScaLAPACK (just kidding?). I hate to bag dense parallell matrices from
>> PETSc completely but don't want to spend a lot of time on whatever we do
>> support.
>
>
> Perhaps there should be a map of Robert's software empire. However, these
> things are disjoint:
>
>   - FLAME: Serial LA algorithms generated from a worksheet specification
>
>   - PLAPACK: Distributed parallel LA
>
>   - FLASH: Multicore parallel LA generated from worksheet specification
>
>   - Jack's code: Update of PLAPACK which has much better scalability
>
> Of course, I want to switch to the later. I am going to talk to Jack about
> this when I am in Austin. He is
> now the grad student of Lexing Ying, who if you don't know him, you really
> should check him out.
>
>    Matt
>
>
>>
>>    Barry
>>
> --
> What most experimenters take for granted before they begin their
> experiments is infinitely more interesting than any results to which their
> experiments lead.
> -- Norbert Wiener
>
>
>


-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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