<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Hi Matthew,</p>
<p>we continued the example. Now it must be our misuse of PETSc
that produced the wrong result.</p>
<p>As stated into the code:</p>
<p>// The call to DMPlexNaturalToGlobalBegin/End does not produce
our expected result...<br>
// In lGlobalVec, we expect to have:<br>
/*<br>
* Process [0]<br>
* 2.<br>
* 4.<br>
* 8.<br>
* 3.<br>
* 9.<br>
* Process [1]<br>
* 1.<br>
* 5.<br>
* 7.<br>
* 0.<br>
* 6.<br>
*<br>
* but we obtained:<br>
*<br>
* Process [0]<br>
* 2.<br>
* 4.<br>
* 8.<br>
* 0.<br>
* 0.<br>
* Process [1]<br>
* 0.<br>
* 0.<br>
* 0.<br>
* 0.<br>
* 0.<br>
*/</p>
<p>(see attached ex44.c)</p>
<p>Thanks,</p>
<p>Eric<br>
</p>
<div class="moz-cite-prefix">On 2021-10-27 1:25 p.m., Eric
Chamberland wrote:<br>
</div>
<blockquote type="cite"
cite="mid:b94d7abb-4270-b8dd-1169-6ef324371156@giref.ulaval.ca">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>Great!</p>
<p>Thanks Matthew, it is working for me up to that point!</p>
<p>We are continuing the ex44.c and forward it to you at the next
blocking point...</p>
<p>Eric<br>
</p>
<div class="moz-cite-prefix">On 2021-10-27 11:14 a.m., Matthew
Knepley wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMYG4GmCuUgj33Uc9-a38H=mKmSgLQ596-k1P-iHxrGWCOJ5kQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html;
charset=UTF-8">
<div dir="ltr">
<div dir="ltr">On Wed, Oct 27, 2021 at 8:29 AM Eric
Chamberland <<a
href="mailto:Eric.Chamberland@giref.ulaval.ca"
moz-do-not-send="true">Eric.Chamberland@giref.ulaval.ca</a>>
wrote:<br>
</div>
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Matthew,</p>
<p>the smallest mesh which crashes the code is a 2x5
mesh:</p>
<p><img
src="cid:part2.DAFAB67E.A76BFEFB@giref.ulaval.ca"
alt="" class=""></p>
<p>See the modified ex44.c</p>
<p>With smaller meshes(2x2, 2x4, etc), it passes... But
it bugs latter when I try to use
DMPlexNaturalToGlobalBegin but let's keep that other
problem for later...</p>
<p>Thanks a lot for helping digging into this! :)</p>
</div>
</blockquote>
<div>I have made a small fix in this branch</div>
<div><br>
</div>
<div> <a
href="https://gitlab.com/petsc/petsc/-/commits/knepley/fix-plex-g2n"
moz-do-not-send="true">https://gitlab.com/petsc/petsc/-/commits/knepley/fix-plex-g2n</a></div>
<div><br>
</div>
<div>It seems to run for me. Can you check it?</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Eric</p>
<p>(sorry if you received this for a 2nd times, I have
trouble with my mail)<br>
</p>
<div>On 2021-10-26 4:35 p.m., Matthew Knepley wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">On Tue, Oct 26, 2021 at 1:35 PM Eric
Chamberland <<a
href="mailto:Eric.Chamberland@giref.ulaval.ca"
target="_blank" moz-do-not-send="true">Eric.Chamberland@giref.ulaval.ca</a>>
wrote:<br>
</div>
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px
0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Here is a screenshot of the partition I
hard coded (top) and vertices/element
numbers (down):<br>
</p>
<p><img
src="cid:part5.461DD5A3.5E9D6E51@giref.ulaval.ca"
alt="" class=""></p>
<p>I have not yet modified the ex44.c example
to properly assign the coordinates... <br>
</p>
<p>(but I would not have done it like it is in
the last version because the sCoords array
is the global array with global vertices
number)</p>
<p>I will have time to do this tomorrow...</p>
<p>Maybe I can first try to reproduce all this
with a smaller mesh?<br>
</p>
</div>
</blockquote>
<div><br>
</div>
<div>That might make it easier to find a problem.</div>
<div><br>
</div>
<div> Thanks!</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px
0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p> </p>
<p>Eric<br>
</p>
<div>On 2021-10-26 9:46 a.m., Matthew Knepley
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Okay, I ran it. Something
seems off with the mesh. First, I cannot
simply explain the partition. The number
of shared vertices and edges
<div>does not seem to come from a straight
cut. Second, the mesh look scrambled on
output.</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Sun,
Oct 24, 2021 at 11:49 PM Eric
Chamberland <<a
href="mailto:Eric.Chamberland@giref.ulaval.ca"
target="_blank" moz-do-not-send="true">Eric.Chamberland@giref.ulaval.ca</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Matthew,</p>
<p>ok, I started back from your ex44.c
example and added the global array
of coordinates. I just have to code
the creation of the local
coordinates now.</p>
<p>Eric<br>
</p>
<div>On 2021-10-20 6:55 p.m., Matthew
Knepley wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">On Wed, Oct 20,
2021 at 3:06 PM Eric Chamberland
<<a
href="mailto:Eric.Chamberland@giref.ulaval.ca"
target="_blank"
moz-do-not-send="true">Eric.Chamberland@giref.ulaval.ca</a>>
wrote:<br>
</div>
<div class="gmail_quote">
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Matthew,</p>
<p>we tried to reproduce the
error in a simple example.</p>
<p>The context is the
following: We hard coded
the mesh and initial
partition into the code
(see sConnectivity and
sInitialPartition) for 2
ranks and try to create a
section in order to use
the
DMPlexNaturalToGlobalBegin
function to retreive our
initial element numbers.</p>
<p>Now the call to
DMPlexDistribute give
different errors depending
on what type of component
we ask the field to be
created. For our
objective, we would like a
global field to be created
on elements only (like a
P0 interpolation).<br>
</p>
<p>We now have the following
error generated:</p>
<p>[0]PETSC ERROR:
---------------------
Error Message
--------------------------------------------------------------<br>
[0]PETSC ERROR: Petsc has
generated inconsistent
data<br>
[0]PETSC ERROR:
Inconsistency in indices,
18 should be 17<br>
[0]PETSC ERROR: See <a
href="https://www.mcs.anl.gov/petsc/documentation/faq.html"
target="_blank"
moz-do-not-send="true">https://www.mcs.anl.gov/petsc/documentation/faq.html</a>
for trouble shooting.<br>
[0]PETSC ERROR: Petsc
Release Version 3.15.0,
Mar 30, 2021 <br>
[0]PETSC ERROR: ./bug on
a named rohan by ericc
Wed Oct 20 14:52:36 2021<br>
[0]PETSC ERROR: Configure
options
--prefix=/opt/petsc-3.15.0_debug_openmpi-4.1.0_gcc7
--with-mpi-compilers=1
--with-mpi-dir=/opt/openmpi-4.1.0_gcc7
--with-cxx-dialect=C++14
--with-make-np=12
--with-shared-libraries=1
--with-debugging=yes
--with-memalign=64
--with-visibility=0
--with-64-bit-indices=0
--download-ml=yes
--download-mumps=yes
--download-superlu=yes
--download-hpddm=yes
--download-slepc=yes
--download-superlu_dist=yes
--download-parmetis=yes
--download-ptscotch=yes
--download-metis=yes
--download-strumpack=yes
--download-suitesparse=yes
--download-hypre=yes
--with-blaslapack-dir=/opt/intel/oneapi/mkl/2021.1.1/env/../lib/intel64
--with-mkl_pardiso-dir=/opt/intel/oneapi/mkl/2021.1.1/env/..
--with-mkl_cpardiso-dir=/opt/intel/oneapi/mkl/2021.1.1/env/..
--with-scalapack=1
--with-scalapack-include=/opt/intel/oneapi/mkl/2021.1.1/env/../include
--with-scalapack-lib="-L/opt/intel/oneapi/mkl/2021.1.1/env/../lib/intel64
-lmkl_scalapack_lp64
-lmkl_blacs_openmpi_lp64"<br>
[0]PETSC ERROR: #1
PetscSFCreateSectionSF()
at
/tmp/ompi-opt/petsc-3.15.0-debug/src/vec/is/sf/utils/sfutils.c:409<br>
[0]PETSC ERROR: #2
DMPlexCreateGlobalToNaturalSF()
at
/tmp/ompi-opt/petsc-3.15.0-debug/src/dm/impls/plex/plexnatural.c:184<br>
[0]PETSC ERROR: #3
DMPlexDistribute() at
/tmp/ompi-opt/petsc-3.15.0-debug/src/dm/impls/plex/plexdistribute.c:1733<br>
[0]PETSC ERROR: #4 main()
at bug_section.cc:159<br>
[0]PETSC ERROR: No PETSc
Option Table entries<br>
[0]PETSC ERROR:
----------------End of
Error Message -------send
entire error message to <a
href="mailto:petsc-maint@mcs.anl.gov" target="_blank"
moz-do-not-send="true">petsc-maint@mcs.anl.gov</a>----------<br>
<br>
</p>
<p>Hope the attached code is
self-explaining, note that
to make it short, we have
not included the final
part of it, just the buggy
part we are encountering
right now...</p>
<p>Thanks for your insights,</p>
</div>
</blockquote>
<div>Thanks for making the
example. I tweaked it
slightly. I put in a test case
that just makes a parallel 7 x
10 quad mesh. This works</div>
<div>fine. Thus I think it must
be something connected with
the original mesh. It is hard
to get a handle on it without
the coordinates.</div>
<div>Do you think you could put
the coordinate array in? I
have added the code to load
them (see attached file).</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt </div>
<blockquote class="gmail_quote"
style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Eric<br>
</p>
<div>On 2021-10-06 9:23
p.m., Matthew Knepley
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div dir="ltr">On Wed,
Oct 6, 2021 at 5:43 PM
Eric Chamberland <<a
href="mailto:Eric.Chamberland@giref.ulaval.ca" target="_blank"
moz-do-not-send="true">Eric.Chamberland@giref.ulaval.ca</a>>
wrote:<br>
</div>
<div class="gmail_quote">
<blockquote
class="gmail_quote"
style="margin:0px
0px 0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Matthew,</p>
<p>we tried to use
that. Now, we
discovered that:</p>
<p>1- even if we
"ask" for
sfNatural
creation with
DMSetUseNatural,
it is not
created because
DMPlexCreateGlobalToNaturalSF looks for a "section": this is not
documented in
DMSetUseNaturalso
we are asking
ourselfs: "is
this a permanent
feature or a
temporary
situation?"<br>
</p>
</div>
</blockquote>
<div>I think
explaining this will
help clear up a lot.</div>
<div><br>
</div>
<div>What the
Natural2Global map
does is permute a
solution vector into
the ordering that it
would have had prior
to mesh
distribution.</div>
<div>Now, in order to
do this permutation,
I need to know the
original (global)
data layout. If it
is not specified
_before_
distribution, we</div>
<div>cannot build the
permutation. The
section describes
the data layout, so
I need it before
distribution.</div>
<div><br>
</div>
<div>I cannot think of
another way that you
would implement
this, but if you
want something else,
let me know.</div>
<blockquote
class="gmail_quote"
style="margin:0px
0px 0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>2- We then
tried to create
a "section" in
different
manners: we took
the code into
the example
petsc/src/dm/impls/plex/tests/ex15.c.
However, we
ended up with a
segfault:</p>
<p>corrupted size
vs. prev_size<br>
[rohan:07297]
*** Process
received signal
***<br>
[rohan:07297]
Signal: Aborted
(6)<br>
[rohan:07297]
Signal code:
(-6)<br>
[rohan:07297] [
0]
/lib64/libpthread.so.0(+0x13f80)[0x7f6f13be3f80]<br>
[rohan:07297] [
1]
/lib64/libc.so.6(gsignal+0x10b)[0x7f6f109b718b]<br>
[rohan:07297] [
2]
/lib64/libc.so.6(abort+0x175)[0x7f6f109b8585]<br>
[rohan:07297] [
3]
/lib64/libc.so.6(+0x7e2f7)[0x7f6f109fb2f7]<br>
[rohan:07297] [
4]
/lib64/libc.so.6(+0x857ea)[0x7f6f10a027ea]<br>
[rohan:07297] [
5]
/lib64/libc.so.6(+0x86036)[0x7f6f10a03036]<br>
[rohan:07297] [
6]
/lib64/libc.so.6(+0x861a3)[0x7f6f10a031a3]<br>
[rohan:07297] [
7]
/lib64/libc.so.6(+0x88740)[0x7f6f10a05740]<br>
[rohan:07297] [
8]
/lib64/libc.so.6(__libc_malloc+0x1b8)[0x7f6f10a070c8]<br>
[rohan:07297] [
9]
/lib64/libc.so.6(__backtrace_symbols+0x134)[0x7f6f10a8b064]<br>
[rohan:07297]
[10]
/home/mefpp_ericc/GIREF/bin/MEF++.dev(_Z12reqBacktraceRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x4e)[0x4538ce]<br>
[rohan:07297]
[11]
/home/mefpp_ericc/GIREF/bin/MEF++.dev(_Z15attacheDebuggerv+0x120)[0x4523c0]<br>
[rohan:07297]
[12]
/home/mefpp_ericc/GIREF/lib/libgiref_dev_Util.so(traitementSignal+0x612)[0x7f6f28f503a2]<br>
[rohan:07297]
[13]
/lib64/libc.so.6(+0x3a210)[0x7f6f109b7210]</p>
<p>[rohan:07297]
[14]
/opt/petsc-3.15.0_debug_openmpi-4.1.0_gcc7/lib/libpetsc.so.3.15(PetscTrMallocDefault+0x6fd)[0x7f6f22f1b8ed]<br>
[rohan:07297]
[15]
/opt/petsc-3.15.0_debug_openmpi-4.1.0_gcc7/lib/libpetsc.so.3.15(PetscMallocA+0x5cd)[0x7f6f22f19c2d]<br>
[rohan:07297]
[16]
/opt/petsc-3.15.0_debug_openmpi-4.1.0_gcc7/lib/libpetsc.so.3.15(PetscSFCreateSectionSF+0xb48)[0x7f6f23268e18]<br>
[rohan:07297]
[17]
/opt/petsc-3.15.0_debug_openmpi-4.1.0_gcc7/lib/libpetsc.so.3.15(DMPlexCreateGlobalToNaturalSF+0x13b2)[0x7f6f241a5602]<br>
[rohan:07297]
[18]
/opt/petsc-3.15.0_debug_openmpi-4.1.0_gcc7/lib/libpetsc.so.3.15(DMPlexDistribute+0x39b1)[0x7f6f23fdca21]<br>
</p>
</div>
</blockquote>
<div>I am not sure
what happened here,
but if you could
send a sample code,
I will figure it
out. </div>
<blockquote
class="gmail_quote"
style="margin:0px
0px 0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>If we do not
create a
section, the
call to
DMPlexDistribute
is successful,
but
DMPlexGetGlobalToNaturalSF return a null SF pointer...<br>
</p>
</div>
</blockquote>
<div>Yes, it just
ignores it in this
case because it does
not have a global
layout. </div>
<blockquote
class="gmail_quote"
style="margin:0px
0px 0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div>
<p> </p>
<p>Here are the
operations we
are calling (
this is almost
the code we are
using, I just
removed
verifications
and creation of
the connectivity
which use our
parallel
structure and
code):<br>
</p>
<p>===========</p>
<p> PetscInt*
lCells = 0;<br>
PetscInt
lNumCorners = 0;<br>
PetscInt
lDimMail = 0;<br>
PetscInt
lnumCells = 0;<br>
<br>
//At this
point we create
the cells for
PETSc expected
input for
DMPlexBuildFromCellListParallel and set lNumCorners, lDimMail and
lnumCells to
correct values.<br>
...<br>
<br>
DM
lDMBete = 0<br>
DMPlexCreate(lMPIComm,&lDMBete);<br>
<br>
DMSetDimension(lDMBete,
lDimMail);<br>
<br>
DMPlexBuildFromCellListParallel(lDMBete,<br>
lnumCells,<br>
PETSC_DECIDE,<br>
pLectureElementsLocaux.reqNbTotalSommets(),<br>
lNumCorners,<br>
lCells,<br>
PETSC_NULL);<br>
<br>
DM
lDMBeteInterp =
0;<br>
DMPlexInterpolate(lDMBete,
&lDMBeteInterp);<br>
DMDestroy(&lDMBete);<br>
lDMBete =
lDMBeteInterp;<br>
<br>
DMSetUseNatural(lDMBete,PETSC_TRUE);<br>
<br>
PetscSF
lSFMigrationSansOvl
= 0;<br>
PetscSF
lSFMigrationOvl
= 0;<br>
DM
lDMDistribueSansOvl
= 0;<br>
DM
lDMAvecOverlap =
0;<br>
<br>
PetscPartitioner
lPart;<br>
DMPlexGetPartitioner(lDMBete,
&lPart);<br>
PetscPartitionerSetFromOptions(lPart);<br>
<br>
PetscSection
section;<br>
PetscInt
numFields = 1;<br>
PetscInt
numBC = 0;<br>
PetscInt
numComp[1] =
{1};<br>
PetscInt
numDof[4] =
{1, 0, 0, 0};<br>
PetscInt
bcFields[1] =
{0};<br>
IS
bcPoints[1] =
{NULL};<br>
<br>
DMSetNumFields(lDMBete,
numFields);<br>
<br>
DMPlexCreateSection(lDMBete,
NULL, numComp,
numDof, numBC,
bcFields,
bcPoints, NULL,
NULL,
§ion);<br>
DMSetLocalSection(lDMBete,
section);<br>
<br>
DMPlexDistribute(lDMBete,
0,
&lSFMigrationSansOvl,
&lDMDistribueSansOvl); // segfault!<br>
</p>
<p>===========<br>
</p>
<p>So we have
other
question/remarks:</p>
<p>3- Maybe PETSc
expect something
specific that is
missing/not
verified: for
example, we
didn't gave any
coordinates
since we just
want to
partition and
compute overlap
for the mesh...
and then recover
our element
numbers in a
"simple way"</p>
<p>4- We are
telling
ourselves it is
somewhat a "big
price to pay" to
have to build an
unused section
to have the
global to
natural ordering
set ? Could
this requirement
be avoided?</p>
</div>
</blockquote>
<div>I don't think so.
There would have to
be _some_ way of
describing your data
layout in terms of
mesh points, and I
do not see how you
could use less
memory doing that. </div>
<blockquote
class="gmail_quote"
style="margin:0px
0px 0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>5- Are there
any improvement
towards our
usages in 3.16
release?</p>
</div>
</blockquote>
<div>Let me try and
run the code above.</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt </div>
<blockquote
class="gmail_quote"
style="margin:0px
0px 0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div>
<p>Thanks,</p>
<p>Eric</p>
<p><br>
</p>
<div>On 2021-09-29
7:39 p.m.,
Matthew Knepley
wrote:<br>
</div>
<blockquote
type="cite">
<div dir="ltr">
<div dir="ltr">On
Wed, Sep 29,
2021 at 5:18
PM Eric
Chamberland
<<a
href="mailto:Eric.Chamberland@giref.ulaval.ca"
target="_blank" moz-do-not-send="true">Eric.Chamberland@giref.ulaval.ca</a>>
wrote:<br>
</div>
<div
class="gmail_quote">
<blockquote
class="gmail_quote"
style="margin:0px 0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
I come back
with _almost_
the original
question:<br>
<br>
I would like
to add an
integer
information
(*our*
original
element <br>
number, not
petsc one) on
each element
of the DMPlex
I create with
<br>
DMPlexBuildFromCellListParallel.<br>
<br>
I would like
this interger
to be
distribruted
by or the same
way <br>
DMPlexDistribute distribute the mesh.<br>
<br>
Is it possible
to do this?<br>
</blockquote>
<div><br>
</div>
<div>I think
we already
have support
for what you
want. If you
call</div>
<div><br>
</div>
<div> <a
href="https://petsc.org/main/docs/manualpages/DM/DMSetUseNatural.html"
target="_blank" moz-do-not-send="true">https://petsc.org/main/docs/manualpages/DM/DMSetUseNatural.html</a></div>
<div><br>
</div>
<div>before
DMPlexDistribute(),
it will
compute a
PetscSF
encoding the
global to
natural map.
You</div>
<div>can get
it with</div>
<div><br>
</div>
<div> <a
href="https://petsc.org/main/docs/manualpages/DMPLEX/DMPlexGetGlobalToNaturalSF.html"
target="_blank" moz-do-not-send="true">https://petsc.org/main/docs/manualpages/DMPLEX/DMPlexGetGlobalToNaturalSF.html</a></div>
<div><br>
</div>
<div>and use
it with</div>
<div><br>
</div>
<div> <a
href="https://petsc.org/main/docs/manualpages/DMPLEX/DMPlexGlobalToNaturalBegin.html"
target="_blank" moz-do-not-send="true">https://petsc.org/main/docs/manualpages/DMPLEX/DMPlexGlobalToNaturalBegin.html</a></div>
<div><br>
</div>
<div>Is this
sufficient?</div>
<div><br>
</div>
<div> Thanks,</div>
<div><br>
</div>
<div> Matt</div>
<div> </div>
<blockquote
class="gmail_quote"
style="margin:0px 0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
Thanks,<br>
<br>
Eric<br>
<br>
On 2021-07-14
1:18 p.m.,
Eric
Chamberland
wrote:<br>
> Hi,<br>
><br>
> I want to
use
DMPlexDistribute
from PETSc for
computing
overlapping <br>
> and play
with the
different
partitioners
supported.<br>
><br>
> However,
after calling
DMPlexDistribute, I noticed the elements are <br>
>
renumbered and
then the
original
number is
lost.<br>
><br>
> What
would be the
best way to
keep track of
the element
renumbering?<br>
><br>
> a) Adding
an optional
parameter to
let the user
retrieve a
vector or <br>
> "IS"
giving the old
number?<br>
><br>
> b) Adding
a DMLabel
(seems a wrong
good solution)<br>
><br>
> c) Other
idea?<br>
><br>
> Of
course, I
don't want to
loose
performances
with the need
of this <br>
>
"mapping"...<br>
><br>
> Thanks,<br>
><br>
> Eric<br>
><br>
-- <br>
Eric
Chamberland,
ing., M. Ing<br>
Professionnel
de recherche<br>
GIREF/Université Laval<br>
(418) 656-2131
poste 41 22 42<br>
<br>
</blockquote>
</div>
<br
clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most
experimenters
take for
granted before
they begin
their
experiments is
infinitely
more
interesting
than any
results to
which their
experiments
lead.<br>
-- Norbert
Wiener</div>
<div><br>
</div>
<div><a
href="http://www.cse.buffalo.edu/~knepley/"
target="_blank" moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<pre cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most
experimenters
take for
granted before
they begin
their
experiments is
infinitely
more
interesting
than any
results to
which their
experiments
lead.<br>
-- Norbert
Wiener</div>
<div><br>
</div>
<div><a
href="http://www.cse.buffalo.edu/~knepley/"
target="_blank" moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<pre cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most
experimenters take
for granted before
they begin their
experiments is
infinitely more
interesting than any
results to which
their experiments
lead.<br>
-- Norbert Wiener</div>
<div><br>
</div>
<div><a
href="http://www.cse.buffalo.edu/~knepley/"
target="_blank"
moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<pre cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most experimenters
take for granted before they
begin their experiments is
infinitely more interesting
than any results to which
their experiments lead.<br>
-- Norbert Wiener</div>
<div><br>
</div>
<div><a
href="http://www.cse.buffalo.edu/~knepley/"
target="_blank"
moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<pre cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most experimenters take for
granted before they begin their
experiments is infinitely more
interesting than any results to which
their experiments lead.<br>
-- Norbert Wiener</div>
<div><br>
</div>
<div><a
href="http://www.cse.buffalo.edu/~knepley/"
target="_blank"
moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<pre cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
</div>
</blockquote>
</div>
<br clear="all">
<div><br>
</div>
-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div>What most experimenters take for granted
before they begin their experiments is
infinitely more interesting than any results to
which their experiments lead.<br>
-- Norbert Wiener</div>
<div><br>
</div>
<div><a
href="http://www.cse.buffalo.edu/~knepley/"
target="_blank" moz-do-not-send="true">https://www.cse.buffalo.edu/~knepley/</a><br>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
<pre class="moz-signature" cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Eric Chamberland, ing., M. Ing
Professionnel de recherche
GIREF/Université Laval
(418) 656-2131 poste 41 22 42</pre>
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