It appears GotoBLAS2 has been deprecated (i.e. orphaned). The new standard is OpenBLAS. OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version. OpenBLAS is an open source project supported by Lab of Parallel Software and Computational Science, Institute of Software Chinese Academy… Read more
MinGW should be installed first. Next… GotoBLAS2 GotoBLAS2 is an implementation of Basic Linear Algebra Subprograms (BLAS). LAPACK uses BLAS. GotoBLAS2 has configurations for a variety of hardware platforms. It builds a library that is optimized for the given PC’s CPU. Make a folder called:… Read more
Here is a Fortran program which performs matrix inversion using the LU decomposition method: INVERSE_MATRIX.F It is compiled via: gfortran -o INVERSE_MATRIX INVERSE_MATRIX.F -llapack It compiles & runs under both Ubuntu & Cygwin. See also: http://www.nag.com/numeric/fl/nagdoc_fl23/examples/source/f07ajfe.f90 * * * The INVERSE_MATRIX.F program uses the subroutines:… Read more
This is another matrix multiplication project using the BLAS function dgemm. It is complied and run in an Ubuntu system. The set consists of two programs: (right mouse click. save target or link as) matrix_mult_cf.cpp fort_matmul_main.f The set calculates: C = A*B The C++ program… Read more
Cygwin is a collection of tools which provide a Linux look and feel environment for Windows. It is also a DLL (cygwin1.dll) which acts as a Linux Application Programming Interface (API) layer providing substantial Linux API functionality. Cygwin is not a way to run native… Read more
CBLAS is C interface to the BLAS library. * * * Ubuntu Installation instructions: BLAS must be installed first. The instructions for BLAS are given at: Generalized Eigenvalue Problem & BLAS Next, wget http://www.netlib.org/blas/blast-forum/cblas.tgz tar zxf cblas.tgz Go to CBLAS folder. Open Makefiles.in in a… Read more
Here is a program that uses dgemm to multiply two matrices: matrix_mult.cpp The dgemm function is implemented using gsl blas. It can be compiled under Cygwin as: gcc -o matrix_mult_alt matrix_mult_alt.cpp -lgsl -lstdc++ And under Ubuntu as: gcc -o matrix_mult_alt matrix_mult_alt.cpp -lgsl -lgslcblas -lstdc++ *… Read more
Blas and Lapack may be installed on an Ubuntu system using the instructions at: Generalized Eigenvalue Problem * * * C++ programs that use Lapack can be compiled in Terminal or Bash shell mode via: g++ file_in -o file_out -lgfortran -llapack -lm where file_in is… Read more
The goal of this project is to solve a “very large” generalized eigenvalue problem in a “reasonable” amount of time using library functions. The mass and stiffness matrices may be either dense or sparse. Optimum routines are desired for each case. Here is description of… Read more