All Questions
11 questions
-1
votes
2
answers
589
views
2d Schrodinger Equation via matrix diagonalization in C
I am trying to solve the time-independent Schrodinger equation in two dimensions via discrete matrix diagonalization. I want the energy eigenvalues and the corresponding eigenfunctions for a given ...
- 95
4
votes
1
answer
186
views
Using GSL for basic operations
I am learning C/C++ for Scientific Computing and I have a question regarding the usage of scientific libraries for basic operations.
Suppose I have to write a small program in C for a bioinformatics ...
- 404
1
vote
0
answers
134
views
Problem in analyzing the program of Gauss Jordan Inverse problem
I had to code a program which calculates Inverse of a matrix by Gauss-Jordan Inverse method , I was trying to analyse the program and then code it myself.
the link
http://hullooo.blogspot.in/2011/...
- 229
1
vote
1
answer
587
views
Linear solve using CHLOMOD in C
I am using the open-source CHLOMOD (as here http://faculty.cse.tamu.edu/davis/suitesparse.html) in order to solve a linear system Ax=b (performing A/b=x) in my domain decomposition code but I am ...
- 37
0
votes
1
answer
239
views
Open Source Linear Algebra Library
I am making a code in C that requires the equivalent of Matlab's '\' command for a linear system of the form AX=B where A is an NxN matrix and X, B are Nx1 vectors- i.e a code that performs X=A\B that ...
- 37
2
votes
1
answer
639
views
Recommendation for C/C++ library which offers Schur complement functions?
I need to find C/C++ libraries which offer function for computing Schur complement. I know about MUMPS and Pastix, but I need more of them to compare them in my research.
Do you have any experience ...
- 141
4
votes
1
answer
2k
views
What is wrong with this matrix multiplication?
I am attempting to write a matrix multiplication routine because I need to do some analysis in CUDA and I want to validate it with CPU code. I am trying to use <...
- 2,159
3
votes
2
answers
5k
views
BLAS, LAPACK or ATLAS for Matrix Multiplication in C
I am trying to find the most optimized way to perform Matrix Multiplication of very large sizes in C language and under Windows 7 or Ubuntu 14.04. And searching led me to BLAS, LAPACK and ATLAS. ...
- 31
4
votes
1
answer
795
views
Libraries for distributed-memory Cholesky factorization?
What libraries can compute dense Cholesky factorizations in distributed-memory environments (preferably using MPI). I'm using C/C++, and have access to a cluster of between 1 and 40 nodes, where each ...
- 373
11
votes
3
answers
1k
views
Testing if two 12x12 matrices have the same determinant
I am given a $12 \times 12$ matrix $Q$ that is symmetric, invertible, positive definite and dense. I need to test if $$\det(Q) = \det(12I-Q-J) \; \; (1)$$ where $J$ is the all ones matrix.
I am ...
- 468
4
votes
2
answers
4k
views
Extracting a 2D matrix from a multidimensional array in C
In my c language program, I have to store multiple dense $m\times m$ matrices corresponding to gridpoints $x_i$ with $i=1,...,n$. I decided to create a three dimensional array $A\in R^{n\times m\...
- 12.2k