MXV is a FORTRAN77 program which sets up several matrix vector multiplication problems y=A*x, and carries them out using
The user is allowed to specify M and N, the number of matrix rows and columns.
mxv m nwhere
M N FLOP doIdoJ doJdoI (ops) MFLOPS MFLOPS 10 10 100 8 11 10 100 1,000 20 28 100 10 1,000 14 21 10 1,000 10,000 34 33 100 100 10,000 28 37 1,000 10 10,000 26 36 10 10,000 100,000 18 33 10,000 10 100,000 26 36 10 100,000 1,000,000 16 35 100 10,000 1,000,000 7 56 1,000 1,000 1,000,000 18 37 10,000 100 1,000,000 28 37 100,000 10 1,000,000 24 34
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
MXV is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.
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MATMUL, a FORTRAN77 program which is an interactive matrix multiplication benchmark program.
MDBNCH, a FORTRAN77 program which is a benchmark molecular simulation calculation.
MXM, a FORTRAN77 program which sets up a matrix multiplication problem A=B*C of arbitrary size, and compares the time required for IJK, IKJ, JIK, JKI, KIJ and KJI orderings of the loops.
MXV_OPENMP, a FORTRAN77 program which compares the performance of plain vanilla Fortran and the FORTRAN90 intrinsic routine MATMUL, for the matrix multiplication problem y=A*x, with and without parallelization by OpenMP.
SUM_MILLION, a FORTRAN77 program which sums the integers from 1 to 1,000,000, as a demonstration of how to rate a computer's speed;
TIMER, FORTRAN77 programs which demonstrate how to compute CPU time or elapsed time.
You can go up one level to the FORTRAN77 source codes.