Questions tagged [lapack]
LAPACK (Linear Algebra PACKage) is a software library package to solve linear algebra equations. LAPACK is written in Fortran 90.
lapack
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Why does using `extern` allow for runtime linking?
I have this code snippet:
extern crate blas;
extern crate openblas_src;
pub fn eigen_decompose_symmetric_tri_diagonal(
main_diag: &Vec<f64>,
sub_diag: &Vec<...
- 9,191
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QR decomposition successful but has high errors
I have two implementations of QR decomposition in a Fortran code. One is a custom QR decomposition function:
! QR decomposition solving for vector B in AX = B
subroutine qr_eqsystem(A, B, X, M, N, ...
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How to setup rust LAPACK wrappers?
This has been asked before with no good answer.
As an MVE one can try this:
use lapack::*;
fn main() {
let n = 3;
let mut a = vec![3.0, 1.0, 1.0, 1.0, 3.0, 1.0, 1.0, 1.0, 3.0];
let mut w =...
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Numpy/Scipy BLAS/LAPACK Linking on macOS (with Apple Accelerate)
Question
I am trying to find out if the latest version of NumPy (2.0.0) is taking advantage of the updated Accelerate BLAS/LAPACK library, including ILP64.
Numpy
Numpy in their 2.0.0 release added ...
- 240
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Quad Precision Version of DSYEVD Routine in Fortran Compilers
I am currently working on a project that requires computing all eigenvalues and, optionally, eigenvectors of a real symmetric matrix with very high precision. I have been using the DSYEVD routine.
...
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0
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Change the BLAS version used by R
I am currently having issues with the 'Eigen()' function in R.
It was mentioned that I should try using 'OpenBLAS'. How abouts should I go about installing this and make R use this version of BLAS.
I ...
- 287
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How can I install LAPACK for gfortran compiler in Visual studio code?
Can someone please tell me proper instructions to install LAPACK for gfortran compiler in Visual studio code.
I tried whatever l found on google search and there is not a single proper instructions ...
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Unable to link pre-built LAPACKE library in CMake C project [duplicate]
I would like to use CI for building my C project that I manage with cmake. The project will heavily employ Fortran's BLAS and LAPACK through CBLAS and LAPACKE. The CMakeLists.txt looks like this:
...
- 9,334
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Why is there no equivalent of GEEV in scalapack?
I am hoping to find the eigenvalues of a large complex non-hermitian matrix using ScaLAPACK. I cannot seem to find any documentation for such a general eigensolver (presumably the name would be ...
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How do I resolve a build error when installing the atlas-lapack package?
I'm installing the atlas-lapack package on ArchLinux
https://aur.archlinux.org/packages/atlas-lapack
Installation is as follows:
git clone https://aur.archlinux.org/atlas-lapack.git
cd atlas-lapack
...
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Compiling Clapack for find_package ( LAPACK
I have to use Clapack as a replacement for blas/lapack in an environment without Fortran compiler. However, some subprojects use find_package ( LAPACK to detect lapack which always fails. Only ...
- 945
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How to extract residual sum of squares from C LAPACKE_sgelss with LAPACK_ROW_MAJOR
I am using MKL LAPACKE_sgelss to compute least square solution to $Ax = b_j$, where $j \in [0 , nrhs) $, A is $m \times n$ matrix and $n < m < nrhs$.
I somehow managed to extract the solution ...
- 610
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Using Lapack in Fortran with CMake Build
I am having some trouble compiling my Fortran code with lapack using CMake - I am new to all of this. I have blas and lapack installed in /usr/lib/x86_64-linux-gnu/ and am using the following ...
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LAPACK: Porting loop of dlarfx calls to dlarfb
At the moment I try to refactor a code which consists of a loop of dlarfx calls to a single dlarft/dlarfb call to improve performance. The code transform a matrix A which is part of a product P * A * ...
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Install LAPACK and locate library
I am completely new to Fortran90 and I need to install LAPACK for this code that I want to run. Looking at the make.inc file of the code, I need to specify the relevant directory that leads to the ...
