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Description
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Defect/Bug Report
- OpenCoarrays Version: 2.3.1
- Fortran Compiler: gfortran 6.4.0
- C compiler used for building lib: gcc 6.4.0
- Output of
uname -a: Linux login01.pro.cyfronet.pl 3.10.0-862.14.4.el7.x86_64 tests dis_transpose: test passed #1 SMP Fri Sep 28 10:29:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux - MPI library being used: Intel MPI 2018.0
- Machine architecture and number of physical cores: 10 nodes, 2x Intel Xeon E5-2680v3 in each node
Observed Behavior
Program stops with error message
ERROR STOP MPI-error: Invalid count
Expected Behavior
2 2.0000000000000000
8 8.0000000000000000
4 4.0000000000000000
5 5.0000000000000000
7 7.0000000000000000
1 55.000000000000000
6 6.0000000000000000
9 9.0000000000000000
3 3.0000000000000000
10 10.000000000000000
Steps to Reproduce
Minimal example
program bigarrays
implicit none
double precision, dimension(:, :), allocatable :: x[:]
integer, parameter :: n = 20000
integer :: k
allocate(x(n, n)[*])
x = dble(this_image())
sync all
if (this_image() == 1) then
do k = 2, num_images()
x(:, :) = x(:, :) + x(:, :)[k]
end do
end if
sync all
print *, this_image(), x(1, 1)
end program bigarrays
Compilation
module load plgrid/tools/gcc/6.4.0
module load plgrid/libs/opencoarrays/2.3.1
gfortran -fcoarray=lib bigarrays.f90 -lcaf_mpi
Invoke program using 10 images (SLURM script)
#!/bin/bash -l
#SBATCH --job-name="test"
## Number of nodes
#SBATCH --nodes=10
#SBATCH --ntasks-per-node=1
#SBATCH --cpus-per-task=24
#SBATCH --mem 100000
#SBATCH --time=0:05:00
#SBATCH -A rpa2018
#SBATCH -p plgrid-testing
#SBATCH --output="bigarrays_gfortran.log"
#SBATCH --error="bigarrays_gfortran.log"
module load plgrid/tools/python
module load plgrid/tools/gcc/6.4.0
module load plgrid/libs/opencoarrays/2.3.1
cafrun -np 10 ./a.out