Hello,
I am building PETSc vectors with the set operation and I see it’s deprecated.
The documentation suggests to use “import( )” but I don’t see how to use it.
How can I use import( ) as a replacement for set( ) as the documentation
suggests? Please provide an example.
Thank you,
ccurred while calling a SLEPc function
-Zachary
> On Jan 8, 2021, at 5:25 PM, Wolfgang Bangerth wrote:
>
> On 1/8/21 3:58 PM, Zachary 42! wrote:
>> Yes, the error comes when I try to use the Slepc solver (the matrix builds
>> without errors). Running the att
No, that's not what you want. You need to partition the columns in the same way as you partition the vectors you want to multiply the matrix by. We generally partition the vectors in the same way as the rows of the matrix, and so then you also have to choose the same partitioning for the columns
_reinit.cc
Description: Binary data
> On Jan 7, 2021, at 10:43 PM, Wolfgang Bangerth wrote:
>
> On 1/6/21 8:07 AM, Zachary 42! wrote:
>> Here is my code again with hopefully better comments. Looking at the loop
>> structure for the dynamic_sparsity_pattern should make it clear
> On Jan 7, 2021, at 7:15 PM, Zachary 42! wrote:
>
> Hi everyone,
>
> I get a “sum of local lengths 32 does not equal global length 128” PETSC
> error in the following test file. It dies at the eigensolver.solve step. I
> tried to use the test and tutorial programs but to
Hi everyone,
I get a “sum of local lengths 32 does not equal global length 128” PETSC error
in the following test file. It dies at the eigensolver.solve step. I tried to
use the test and tutorial programs but to no avail. Still wrapping my head
around the logic so please excuse me.
Thank
Hi everyone,
Ideally I would like to create an AlignedVector with a begin and end and then
push_back only to those indices within those bounds. Is there a way to
accomplish this?
I assume the push_back function works similar to std::vector and starts the
index count at zero, I would like to
Sorry, I am not sure why my code’s format changed when I copied and pasted,
trying again...
#include
#include
#include
#include
#include
using namespace dealii;
class OneBodyHamiltonianOperator
{
public:
/**
* Declare type for container size.
*/
using size_type =
W.,
Ah yes you are correct in your thinking. My test case was every process did
have the same number of rows but I would need to communicate that with a gather
to account for the number of rows not divisible by the number of given
processors. I will use the 4th reinit function to avoid
Hi everyone,
I am trying to debug this strange behavior. I am trying to build a PETSC
sparse parallel matrix using 4 processors. This gives me 32 local number of
rows (so 128 global number of rows). But when I pass the local_num_of_rows
variable into the reinit function, this is the PETSC
Hi there,
I am trying to build a parallel PETSc sparse matrix by building a local
sparsity pattern and subsequently distributing the pattern to all processes so
I then have the full sparsity pattern for the PETSc sparse matrix (I read this
needs to be done but please correct me if I am wrong).
Hello,
I recently tried to build deal.II locally because the cluster is down and I
have the error below. How can I attack this? I appreciate any guidance in
advance!
-- Include /Users/zachary/Documents/Coding/dealii/cmake/setup_finalize.cmake
-- Performing Test
Hi everyone,
I want to create a PETSC matrix across multiple nodes using MPI. This should
be simply finding the appropriate local index within my loops and build up the
matrix. What are some of the functionalities I should look into for this?
There are multiple “partition” so I thought it
Hi everyone,
I am wondering if deal.II has any OpenMP capabilities or if they would be
easily incorporated?
I know the deal.II project uses TBB for multithreading but I would like to run
multithreaded on computers that may not have TBB.
Cheers,
Zachary
--
The deal.II project is located at
Hi everyone,
I saw on lecture 22 “Some data structure design considerations” Prof. Wolfgang
described a struct of arrays (SOA) with an accessor interface. This keeps nice
encapsulation while also providing nice cache use. I would like to understand
this design better for my personal
Hi everyone,
I want to use some fortran modules in my test build of deal.II. What would be
the best way to create this structure? Maybe create a fortran directory in
source and create a obj_fortran OBJECT but I am not sure if the
DEAL_II_ADD_LIBRARY macro will work with .f90 files. This
Hi everyone,
I am having an issue with building deal.II on my groups cluster. I am trying
to build with Intel MPI compilers like mpiicc and mpiicpc. Here is the output
where the error is:
- Include
/global/home/users/lstreeter/dealii/cmake/checks/check_01_cxx_features.cmake
-- Performing
Hi everyone,
I am trying to run some MPI tests and I don’t see on the deal.II website how to
use ctest for running MPI programs. I just saw how the output file needs to
indicate the number of processors used in the test so numdiff works correctly.
How do you use ctest for running a MPI test
Hi folks,
I am trying to add another include/source directory and subsequent obj to
dealii for potential future contributions to dealii. Though I am having
linking errors because my new obj needs to link agains the lac_obj (need
Trilinos and other interfaces). I thought the ADD_DEPENDICIES
Hi folks,
I am trying to add a new test that requires reading in a file so I’m passing it
in as an argument. I am not sure how to use CTest and the other test setup in
deal.II to pass in a file as an argument.
Cheers,
Zachary
--
The deal.II project is located at http://www.dealii.org/
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