libGridXC

test4 cannot run with -np > 6

Bug #1665317 reported by Nick Papior
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This bug affects 1 person
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libGridXC
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Bug Description

Testers/test4.F90 cannot run with 7 or 8 cores in an MPI run.

The following backtrace can be generated (on the trunk version)

At line 2712 of file ...libGridXC/trunk/src/mesh3d.F90
Fortran runtime error: Index '1' of dimension 1 of array 'trsfbuff' outside of expected range (1:0)

Error termination. Backtrace:
#0 0x491c53 in reducedata
 at ...libGridXC/trunk/src/mesh3d.F90:2712
#1 0x4a7545 in __mesh3d_MOD_copymeshdata
 at ...libGridXC/trunk/src/mesh3d.F90:1090
#2 0x415a25 in __m_cellxc_MOD_cellxc
 at ...libGridXC/trunk/src/cellxc.F90:489
#3 0x4045b0 in gridxctest4
 at ...libGridXC/trunk/gfortran/Testers/test4.F90:188
#4 0x4068e1 in main
 at ...libGridXC/trunk/gfortran/Testers/test4.F90:7

It seems the calculation of the temporary buffer is not correct? I couldn't figure out how to fix it, tried various combinations around line: 2565, to no avail.

Compiled with the examples/fortran.mk with debug options turned on.

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