There is a hint in a comment in matimpl.h
Note: the level of factor(i,j) is set as lvl(i,j) = min{ lvl(i,j),
lvl(i,prow)+lvl(prow,j)+1)
So it uses the "sum" rule.
Barry
> On Jan 3, 2019, at 9:38 AM, Tim Steinhoff via petsc-users
> wrote:
>
> Dear PETSc Team
>
> I checked
Hi,
Is there any simple way of setting minor diagonals. The main diagonal can
be set by MatDiagonalSet but there's no equivalent way of doing it for for
minor diagonals. Does the preferred way to do this involve using
MatSetValues or there a simpler way?
Thank You,
Sajid Ali
Applied Physics
You may try different matrix orderings, or try superlu_dist.
Hong
On Thu, Jan 3, 2019 at 7:39 AM Matthew Knepley via petsc-users
mailto:petsc-users@mcs.anl.gov>> wrote:
On Thu, Jan 3, 2019 at 5:58 AM Sal Am via petsc-users
mailto:petsc-users@mcs.anl.gov>> wrote:
[0]PETSC ERROR:
Hello,
Happy New Year Everybody!
I get a vector from a linear solve and is used a divisor in VecPointwiseDivide.
Clearly, I must check for zero entries before doing the division.
What is the best way to do so, especially performance wise?
The only way I come up with so far, is to VecCopy,
On Thu, Jan 3, 2019 at 7:36 AM Yingjie Wu via petsc-users <
petsc-users@mcs.anl.gov> wrote:
> Thanks for your reply.
> I read the article you provided. This is my first contact with the
> quasi-Newton method.
> I have some problem:
> 1. From the point of view of algorithm, the quasi-Newton method
There is a hint in a comment in matimpl.h
Note: the level of factor(i,j) is set as lvl(i,j) = min{ lvl(i,j),
lvl(i,prow)+lvl(prow,j)+1)
So it is the sum approach.
Barry
> On Jan 3, 2019, at 9:38 AM, Tim Steinhoff via petsc-users
> wrote:
>
> Dear PETSc Team
>
> I checked
Hi,
I've compiled a program using petsc with debugging enabled.
Confirmation of the same : https://pastebin.com/aa0XDheD (check if the
loaded module is indeed petsc+debug, compile)
When I run it in a debugger, I get the error as shown below:
https://pastebin.com/GJtB2Ghz
What am I missing?
Got it. Thank you!
On Thu, Jan 3, 2019 at 11:46 AM Matthew Knepley wrote:
> On Thu, Jan 3, 2019 at 12:24 PM Sajid Ali via petsc-users <
> petsc-users@mcs.anl.gov> wrote:
>
>> Hi,
>>
>> Is there any simple way of setting minor diagonals. The main diagonal can
>> be set by MatDiagonalSet but
Florian Lindner via petsc-users writes:
> I get a vector from a linear solve and is used a divisor in
> VecPointwiseDivide. Clearly, I must check for zero entries before doing the
> division.
Note that VecPointwiseDivide does not divide by values that are
identically zero.
for (i=0; i What
On Thu, 3 Jan 2019, Matthew Knepley via petsc-users wrote:
> On Thu, Jan 3, 2019 at 7:02 PM Danyang Su via petsc-users <
> petsc-users@mcs.anl.gov> wrote:
>
> > Hi All,
> >
> > I am trying to install PETSc on macOS Mojave using GNU compiler.
> > First, I tried the debug version using the
This appears to be more a spack question than a PETSc question. That make
(that doesn't have the -g) is controlled by spack, not PETSc.
Barry
> On Jan 3, 2019, at 6:15 PM, Sajid Ali via petsc-users
> wrote:
>
> Hi,
>
> I've compiled a program using petsc with debugging enabled.
>
I guess the primary bug here is 'petsc+debug' option is broken in spack.
Its not clear to me if a package in spack should have 'debug' option. [so I
should remove this?]
since spack way is perhaps:
spack install CFLAGS=-g FFLAGS=-g CXXFLAGS=-g petsc
Satish
On Fri, 4 Jan 2019, Smith, Barry F.
> On Jan 3, 2019, at 8:44 PM, Balay, Satish wrote:
>
> I guess the primary bug here is 'petsc+debug' option is broken in spack.
>
> Its not clear to me if a package in spack should have 'debug' option. [so I
> should remove this?]
Question you should ask the spack folks. Many systems
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