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Results tagged with c++
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user 7567
For questions about writing C++ computational code or utilizing libraries written with C++.
8
votes
4
answers
6k
views
How to efficiently assemble global stiffness matrix in sparse storage format (c++)
I am writing a finite element solver in C++. The main bottle neck is assembling the global stiffness matrix in sparse compressed row storage (so far I am only solving steady problems). Because I don't …
- 1,929
0
votes
2
answers
127
views
How to determine the number of c points in algebraic multi grid
I am trying to write an algebraic multi-grid solver (in c++). At a given level I determine which nodes are c-points and which nodes are f-points (where the total number of c and f points equals the ma …
- 1,929
1
vote
What language should I use when teaching an undergraduate course in computer programming?
C,C++, & Fortran (listed in no particular order) are the three main programming languages used for computational mathematics/physics if you want to solve large problems on supercomputers. I think CUDA …
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2
votes
Accepted
Topics about the deal.II finite element library class "SparsityPattern"
I will try answer based on my experience with deal.ii.
The max_per_row=5 means that at most there will be 5 non-zeros per row in the matrix. Since we now know this then we do not need to have a $1\ …
- 1,929
5
votes
2
answers
2k
views
How to implement adaptive mesh refinement using conformal triangles
I am trying to implement adaptive mesh refinement for a finite element code. The code uses (at least for now) linear triangles and so when I do the mesh refinement I want the triangular mesh to remain …
- 1,929
2
votes
Accepted
How to implement adaptive mesh refinement using conformal triangles
With the help of Wolfgangs answer I think I have figured it out. It is necessary to include additional pointers in my Node class so that each Node in the binary tree can know who are its neighbors. Fo …
- 1,929