[petsc-dev] CheckPointer

[Jim Fonseca]

Great, thank you Matt and Jed


On Thu, Dec 19, 2013 at 2:08 PM, Matthew Knepley <knepley at gmail.com> wrote:

> On Mon, Sep 30, 2013 at 12:25 PM, Jim Fonseca <jefonseca at gmail.com> wrote:
>
>> Hi,
>> Does anyone have an update on PetscCheckPointer?
>>
>
> Jed pushed a fix for this.
>
>    Matt
>
>
>> Thanks,
>> Jim
>>
>>
>> On Wed, Sep 11, 2013 at 12:14 PM, Dave May <dave.mayhem23 at gmail.com>wrote:
>>
>>> I would be much happier with run-time as well, but I could also live
>>> with a reconfigure (it's just one MORE petsc build on my machine :D).
>>>
>>> What ever can be done to fix this issue would be appreciated.
>>>
>>> Cheers,
>>>   Dave
>>>
>>>
>>> On 11 September 2013 18:12, Jed Brown <jedbrown at mcs.anl.gov> wrote:
>>>
>>>> Dave May <dave.mayhem23 at gmail.com> writes:
>>>>
>>>> > Yes, being able to optionally turn off the full memory checking
>>>> (either run
>>>> > time or via a configuration flag) in MatSetValues() would be good
>>>> enough.
>>>>
>>>> I'd rather make everything run-time unless it absolutely must be
>>>> configure time because it sucks to reconfigure (and possibly rebuild
>>>> downstream libraries/packages).
>>>>
>>>> > Presumably when the full error checking wasn't being used, the error
>>>> > checking should revert to using the old style memory checking (e.g.
>>>> ptr != 0)
>>>> > as was used in version 3.2 (and maybe 3.3, I cannot recall).
>>>>
>>>> Yes.  As far as I'm concerned, it should also try to dereference it so
>>>> that a SEGV occurs early rather than later.  The only difference between
>>>> safe and fast mode is that the SEGV in safe mode is caught by a friendly
>>>> signal handler than cleans up and returns so that a normal error can be
>>>> propagated.
>>>>
>>>
>>>
>>
>>
>> --
>> Jim Fonseca, PhD
>> Research Scientist
>> Network for Computational Nanotechnology
>> Purdue University
>> 765-496-6495
>> www.jimfonseca.com
>>
>>
>>
>
>
> --
> 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
>



-- 
Jim Fonseca, PhD
Research Scientist
Network for Computational Nanotechnology
Purdue University
765-496-6495
www.jimfonseca.com
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