Multiplication Matrix In Fortran
T1 t2 dt count_rate count_max real allocatable dimension. Fortran 90 and later Class.
Sub Array Manipulations In Fortran
Program matrix_multiply use omp_lib use openacc implicit none integer.
Multiplication matrix in fortran. A triple do-loop takes 4857 seconds. Matrix multiplication is rather common so it would be useful to put it in a reusable subroutine. 9188 MATMUL matrix multiplication Description.
Matrix Multiply Fortran Code. A matmul ab function takes 49055 seconds. A triple do-loop takes 12904 seconds.
A matmul ab function takes 32777 seconds. Do i1msize rsumauxrzero rsumrzero do k1msize rsumauxAikxk rsumrsumrsumaux enddo birsum enddo. X Y REAL DIMENSION33.
Create a Fortran module called MatrixMultiplyModule. I j k myid m n compiled_for option integer parameter. C AB multplies corresponding elements in A and B.
Fortran 90 Lecture 5 AS 3013 15 Arrays Subprograms Example. In Fortran 90 it is as simple as C A B. Most of the intrinsic functions operate component-wise on arrays.
RESULT MATMULMATRIX_A MATRIX_B Arguments. If youre having any confusion in any step. MATMULcan do this for a variety of matrix sizes and for different arithmetics real complex double precision integer even logical.
Tmp secs open fdfilewallclocktimeformformatted option compiled_for fd. C sinA is equivalent to in this case A is a one dimensional array do i1n Ci sinAi enddo Note. Fd 11 integer.
And this is just fine it works it give the result I want. In this video Weve shown how to perform matrix addition subtraction and multiplication using FORTRAN 77 Program. I j do i 1 3 do j 1 3.
Each routine should take two real matrices as argument perform a matrix multiplication and return the result via a third argument. 2 rows program matMulProduct integer dimension33. The generation of two matrices takes 0278 seconds.
A b c integer. Ifort -O3 -xSSSE3 testf90. But the thing is that I have read that Fortran orders the arrays in column-major order which means that arrays like and lets suppose that A is a 3x3 matrix then these are ordered in memory like.
Performs a matrix multiplication on numeric or logical arguments. It does NOT do matrix multiplication. Fortran source code is found in dgemm_examplef PROGRAM MAIN IMPLICIT NONE DOUBLE PRECISION ALPHA BETA INTEGER M K N I J PARAMETER M2000 K200 N1000 DOUBLE PRECISION AMK BKN CMN PRINT This example computes real matrix CalphaABbetaC PRINT using IntelR MKL function dgemm where A B and C PRINT are matrices and alpha and beta are double precision PRINT scalars PRINT PRINT Initializing data for matrix multiplication.
Add three subroutines to it called LoopMatrixMultiply IntrinsicMatrixMultiply and MixMatrixMultiply. PROGRAM MATMLPY_TEST REAL DIMENSION3. A b c real.
A Matrix Multiplication Benchmark. A READ A. MATMULis a FORTRAN77 program which compares various methods for computing the matrix product.
A B C.
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