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Questions tagged [lapack]

LAPACK (Linear Algebra PACKage) is a software library package to solve linear algebra equations. LAPACK is written in Fortran 90.

LAPACK provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. LAPACK is written in Fortran 90.

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MinGW: Linking with LAPACK and BLAS causes C++ exceptions to become unhandled

The situation is simple, but strange. When i compile my program without the LinearAlgebra.o source (which requires linking to LAPACK), C++ exceptions are caught and handled. When I do not include that compilation unit but still link to the libraries…
Steven Lu
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trouble linking lapack

i am trying to link lapack and a simple locate lapack returns /usr/lib64/liblapack.so.3 /usr/lib64/liblapack.so.3.2.1 so in am trying to link it with gfortran -o linreg driver.f90 LFsubroutines.f90 -L/usr/lib64 -llapack -fimplicit-none but i get…
drjrm3
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Fortran 90: DSYEV and associating eigenvalues and eigenvectors

I am very new to programming and fortran in particular. I am using the LAPACK (Linear Algebra Package) software package for Fortran to find the eigenvalues and eigenvectors of a large symmetrical real matrix. Specifically, I calculate a scalar from…
A.L.
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Lapack via Scheme

I am looking for a Scheme implementation with a reasonable BLAS and LAPACK interface package, i.e. one that supports the API subset decribted in Golub and Van Loan's "Matrix Computations". This would include, at the very least, all the BLAS…
gappy
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LAPACKE or MAGMA GPU - inversion of matrix with Cholesky factorization - functions magma_dpotrf_gpu and magma_dpotri_gpu

I have a first version of a function that inverses a matrix of size m and using magma_dgetrf_gpu and magma_dgetri_gpulike this : // Inversion magma_dgetrf_gpu( m, m, d_a, m, piv, &info); magma_dgetri_gpu( m, d_a, m, piv, dwork, ldwork,…
user1773603
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How can I link numpy to use MKL as backend?

I have a numpy install and it shows no BLAS backend available: (pyrepoux) bash-4.2$ python Python 3.7.3 | packaged by conda-forge | (default, Dec 6 2019, 08:54:18) [GCC 7.3.0] :: Anaconda, Inc. on linux Type "help", "copyright", "credits" or…
SkyWalker
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openmp multithread gets stuck on lapack

I have the following program: #pragma omp parallel num_threads(cfg.max_parallel_threads) private(pos,row,info) { int threadID = omp_get_thread_num(); #pragma omp for for (pos = 0;pos < (end - start);pos++) { …
Saint Paul
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How do you prioritise linking NVBLAS in Visual Studio to work with Armadillo?

I am trying to prioritise the linking of nvblas over blas to work with Armadillo. From what I have read, I can see that the libraries need to be put in the following linking order: Lapack NVBlas Blas I have done this in my visual studio project,…
XuAnderlu
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LAPACK wrappers for C/C++

I would like to use Visual Studio 2008, programming in C++, but would also like to use LAPACK power, Is there any wrapper so I can use LAPACK in Visual Studio 2008.
edgarmtze
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LAPACK DGETRF+DGETRI failing

I'm trying to inverse a matrix via LAPACK's DGETRF and DGETRI routines, but the following code: program Tester !use LapackMatrixOps use MathematicalResources implicit none real :: B(2, 2), A(2, 2), WORK(2) integer :: i, j,…
Pedro Secchi
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Looking for a List of LAPACK/BLAS Error code

I am using zheev of LAPACK (in Intel MKL). I got int INFO=99. I've been searching around internet what this corresponds to, but I cannot find the documentation with list of all the integer error code and their meaning. Does anyone have links to the…
Tom
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Need to include Accelerate framework in Xcode

During the past week, I've been building a massive static library (>1000 C files) with files that have been generated by an independent third-party. Currently, I'm programming an app that will have some intense computations and it appears that i…
Rasman
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Full matrix or triagonal part necessary in LAPACKE function for diagonalization?

I would like to compute the eigenvalues of a symmetric matrix and wanted to use the LAPACKE_dsyev function from the Intel MKL Library in C++ for that. But I am a bit puzzled regarding the form in which the matrix needs to be passed. From the…
cschoenle
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Why is matlab's mldivide so much better than dgels?

Solve Ax = b. Real double. A is overdetermined Mx2 with M >> 2. b is Mx1. I've run a ton of data against mldivide, and the results are excellent. I wrote a mex routine with MKL LAPACKE_dgels and it's nowhere near as good. The results have a…
Tyson Hilmer
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LAPACK on Visual C/C++ 2010

I want to use LAPACK and BLAS in Visual C/C++ 2010 (add LAPACK and BLAS libs to Visual C/C++ 2010), so I was reading a very similar question here (The same but with visual C/C++ 2008),He claims he solved it like: I figured out the answer to my …
edgarmtze
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