<p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">Dear all,</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">I am using QE version 7.3.1 on an Ubuntu 22.04 environment. I am also using Intel oneAPI for the compiler, MPI, etc.</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">I am performing neb.x calculations under a homogeneous finite electric field based on the modern theory of polarization (lelfield = .true.).</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">When calculating images one at a time using commands like “mpirun -np 16 -inp xxxxx.in > xxxxx.out”, the calculation proceeds without issues. However, when calculating images simultaneously using commands like “mpirun -np 48 -ni 3 -inp xxxxx.in > xxxxx.out”, the following problem occurs.</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">Below is an excerpt from PW.out in image1 ,</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"><br></span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">.....</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     End of self-consistent calculation</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">          k = 0.0000 0.0000 0.0000 ( 13805 PWs)   bands (ev):</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">   -46.0910 -46.0650 -45.9979 -45.9869 -45.9276 -45.9010 -45.8950 -45.8401</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">   -22.7314 -22.6129 -22.6032 -22.5686 -22.5587 -22.5497 -22.5272 -22.5158</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">.....</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     8.8268   8.9163   8.9827   9.3431   9.4554   9.4892   9.5100   9.5884</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     highest occupied level (ev):     9.5884</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">!    total energy              =   -2303.12093350 Ry</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     estimated scf accuracy    <       0.00000735 Ry</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     The total energy is the sum of the following terms:</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     one-electron contribution =    -624.09930643 Ry</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     hartree contribution      =     489.01939044 Ry</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     xc contribution           =    -463.47927866 Ry</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     ewald contribution        =   -1696.38943348 Ry</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     convergence has been achieved in  11 iterations</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     Writing all to output data dir xxxxx/xxx_1/xxx.save/ :</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     XML data file, charge density, pseudopotentials, collected wavefunctions</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">     negative rho (up, down):  5.389E-01 0.000E+00</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"> OH BOY -2086101920</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"> OH BOY -1107549545</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"> OH BOY   189234244</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"> OH BOY -1106211815</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"> OH BOY -1813111808</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"> OH BOY -1114285954</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">.....</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"><br></span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">Reviewing the source code, it appears there may be issues with the values in `aux_rcv_ind(ig,iproc)` or `aux_g_mpi_ind(ig,mpime+1)` within `forces_bp_efield.f90`, but I couldn't understand it further.</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;"><br></span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">I would appreciate your advice on this issue.</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">Masahito YOSHINO</span></p><p style="overflow-wrap: anywhere;"><span style="overflow-wrap: anywhere; font-family: Arial, sans-serif; font-size: 13.3333px;">JAPAN</span></p>