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
MinGW stands for Minimalist GNU for Windows. MinGW is a native software port of the GNU Compiler Collection (GCC) and GNU Binutils for use in the development of native Microsoft Windows applications. MinGW can be downloaded with Code::Blocks. Or it can be downloaded via soureforge.… 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
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