I wanted to revive this (month-old) thread to try to finalize the API
change related to "pivoting" in PCFIELDSPLIT.
On Thu, Jun 7, 2012 at 6:42 PM, Jed Brown wrote:
> On Thu, Jun 7, 2012 at 6:34 PM, Dmitry Karpeev wrote:
>
>> Well, the above defines the "pivots"
>
>
> Okay, but this is not a "fi
On Thu, Jun 7, 2012 at 6:34 PM, Dmitry Karpeev wrote:
> Well, the above defines the "pivots"
Okay, but this is not a "field decomposition". We are extracting
sub-problems (maybe overlapping?) that have implicit off-diagonal parts
that may also need to be evaluated (how?).
-- next pa
On Thu, Jun 7, 2012 at 6:24 PM, Jed Brown wrote:
> On Thu, Jun 7, 2012 at 6:17 PM, Dmitry Karpeev wrote:
>
>> DMCreateFieldDecomposition(DM dm, PetscInt *numsplits, char **splitnames,
>> IS *rowislist, IS *colislist, DM *dmlist)
>
>
> How can this be right? Shouldn't I be getting arrays back (rat
On Thu, Jun 7, 2012 at 6:17 PM, Dmitry Karpeev wrote:
> DMCreateFieldDecomposition(DM dm, PetscInt *numsplits, char **splitnames,
> IS *rowislist, IS *colislist, DM *dmlist)
How can this be right? Shouldn't I be getting arrays back (rather than
having to create my own)?
Does the PCFieldSplit h
On Thu, Jun 7, 2012 at 6:21 PM, Barry Smith wrote:
>
> On Jun 7, 2012, at 6:17 PM, Dmitry Karpeev wrote:
>
> > In the short run, however, we need to agree on an API for defining
> splits that have an input and output
> > space. In the code the splits already carry row and col ISs, but there
> is
On Jun 7, 2012, at 6:17 PM, Dmitry Karpeev wrote:
> In the short run, however, we need to agree on an API for defining splits
> that have an input and output
> space. In the code the splits already carry row and col ISs, but there is no
> way to set them separately,
> at least not for IS-defi
In the short run, however, we need to agree on an API for defining splits
that have an input and output
space. In the code the splits already carry row and col ISs, but there is
no way to set them separately,
at least not for IS-defined splits. Should we add something like
PCFieldSplitSetSplit(PC
On Wed, Jun 6, 2012 at 6:54 PM, Barry Smith wrote:
> No you don't get back a pair of subDMS, you get a DM that goes from one
> state space to "a different" residual space. Normally one would not need
> this though it does come up in the VI stuff.
>
For a low temperature/rarefied gas, total energ
On Jun 6, 2012, at 5:16 PM, Dmitry Karpeev wrote:
>
>
> On Wed, Jun 6, 2012 at 4:58 PM, Jed Brown wrote:
> On Fri, Mar 23, 2012 at 10:15 PM, Barry Smith wrote:
>
> On Mar 23, 2012, at 6:22 PM, Jed Brown wrote:
>
> > But what does using B as 00 block actually mean? It seems to me that you
>
On Jun 6, 2012, at 4:58 PM, Jed Brown wrote:
> On Fri, Mar 23, 2012 at 10:15 PM, Barry Smith wrote:
>
> On Mar 23, 2012, at 6:22 PM, Jed Brown wrote:
>
> > But what does using B as 00 block actually mean? It seems to me that you
> > pivot, producing P' P J where P J has B in the 00 location.
On Wed, Jun 6, 2012 at 4:58 PM, Jed Brown wrote:
> On Fri, Mar 23, 2012 at 10:15 PM, Barry Smith wrote:
>
>>
>> On Mar 23, 2012, at 6:22 PM, Jed Brown wrote:
>>
>> > But what does using B as 00 block actually mean? It seems to me that
>> you pivot, producing P' P J where P J has B in the 00 loca
On Fri, Mar 23, 2012 at 10:15 PM, Barry Smith wrote:
>
> On Mar 23, 2012, at 6:22 PM, Jed Brown wrote:
>
> > But what does using B as 00 block actually mean? It seems to me that you
> pivot, producing P' P J where P J has B in the 00 location.
>
>I am not arguing if it is pivoting or not. I'm
On Mar 23, 2012, at 6:22 PM, Jed Brown wrote:
> But what does using B as 00 block actually mean? It seems to me that you
> pivot, producing P' P J where P J has B in the 00 location.
I am not arguing if it is pivoting or not. I'm arguing what the user
interface should be. Say I want D to b
But what does using B as 00 block actually mean? It seems to me that you
pivot, producing P' P J where P J has B in the 00 location.
On Mar 23, 2012 6:13 PM, "Barry Smith" wrote:
>
> On Mar 23, 2012, at 6:00 PM, Jed Brown wrote:
>
> > On Fri, Mar 23, 2012 at 17:48, Barry Smith wrote:
> >I'm
On Mar 23, 2012, at 6:00 PM, Jed Brown wrote:
> On Fri, Mar 23, 2012 at 17:48, Barry Smith wrote:
>I'm confused. I am NOT injecting it into the original definition, I am
> injecting it into the PCFieldSplit in the same way that your "permutation"
> would inject it just into the PCFieldSpli
On Fri, Mar 23, 2012 at 17:48, Barry Smith wrote:
>I'm confused. I am NOT injecting it into the original definition, I am
> injecting it into the PCFieldSplit in the same way that your "permutation"
> would inject it just into the PCFieldSplit, it is just (in my opinion) a
> more user friendl
On Mar 23, 2012, at 5:41 PM, Jed Brown wrote:
> On Fri, Mar 23, 2012 at 17:14, Barry Smith wrote:
> But you are implicitly assuming that for example the first component of
> input space is "somehow" tied to the first component of the output space etc.
> I submit this is only true if the user
On Fri, Mar 23, 2012 at 17:14, Barry Smith wrote:
> But you are implicitly assuming that for example the first component of
> input space is "somehow" tied to the first component of the output space
> etc. I submit this is only true if the user has chosen first component of
> the input space an
On Mar 23, 2012, at 4:56 PM, Jed Brown wrote:
> This changed the API for PCFieldSplitSetFields(), but didn't update the man
> page, src/docs/website/documentation/changes/dev.html, or the examples that
> called the function (one of the two examples was updated later).
>
> http://petsc.cs.iit.e
This changed the API for PCFieldSplitSetFields(), but didn't update the man
page, src/docs/website/documentation/changes/dev.html, or the examples that
called the function (one of the two examples was updated later).
http://petsc.cs.iit.edu/petsc/petsc-dev/rev/55721edbdaa2
But is this even the ri
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