I have a parallel code with OpenMP which is a mix of Fortran, C and R. The Fortran and C are the back-end or solver of the code (it's a computational code) and the R part is just an interface…
In a parallel loop, I process a shared array using a subroutine to which I pass the array and the current private-do index as parameters, but the program crashes with an array out-of-bounds error. How to correctly call a subroutine…
I am trying to compile a Fortran code on a Linux Ubuntu machine and I'm getting the following error (in bold): calcul@gpuserver:~/dp3D/src$ ./makedp3D Do you want to use standard directory /home/calcul/bin/dp3D/ (y/n) ?y Using existing directory: /home/calcul/bin/dp3D/ objects will be…
I am working with an older Fortran code and during compilation I get many different error messages, some of the of the following format: if(iand(n_jz2_max,1).eq.0) then 1 Error: Arguments of ‘iand’ have different kind type parameters at (1) where n_jz2_max…
ifort version: (IFORT) 2021.8.0 20221119 OS: WSL Ubuntu 20.04LTS I have a (1000x1000x1000) 3D array to distribute among procs. In the first approach, I flatten the array and then distribute arrays among procs and it takes about 7.86sec In the…
I am coding and running a physics simulation in Fortran using MS Visual Studio Code on Windows 11 and I want to use MPI. I have installed Microsoft MPI (MSMPI) and know that it is correctly installed. When I enter…
I wrote a program in Fortran that uses RANDOM_NUMBER() and was compiled with gfortran, but I noticed that the generated random numbers are inconsistent between versions. If RANDOM_SEED() is not used to seed the random number generator, then both, gfortran…
I have a subroutine ran_init ( length ), in which one IF statement works incorrectly. The code below is a highly simplified version of my original code: MODULE ran_state USE nrtype IMPLICIT NONE INTEGER, PARAMETER :: K4B = SELECTED_INT_KIND (…
I would like to produce the same random number sequence in both a program written in C and Fortran. I am using gcc version 10.3.0 within Windows Subsystem for Linux (Win10) running Ubuntu 20.04 LTS. I've tried using the same…
Trying to compile some Fortran code using gfortran 9.x.x on my CentOS 7.xx machine. Have a particular version of the code that requires linking to LAPACK and BLAS (specifcially, liblapack.a, and librefblas.a). Have LAPACK (and all the -devel libs), and…