Issue on Running on multiple core

[vikasrajisro]

Dear all
I am trying to run specfem2d on multiple core (NPROC =8), the command ./bin/xmeshfem2D work smoothly but in next step the command ./bin/xspecfem2D is not working properly showing some error like this
Source 1
Position (x,z) of the source = 100000.00000000000 185000.00000000000
Invalid position, mesh dimensions are: xmin/max = 32000.000000000000 99000.000000000000 zmin/zmax 0.0000000000000000 76000.000000000000
Please fix source location, exiting...
Error: at least one source has x > xmax of the mesh
Error detected, aborting MPI... proc 0
Abort(30) on node 0 (rank 0 in comm 0): application called MPI_Abort(MPI_COMM_WORLD, 30) - process 0

Inspite if i use single core (NPROC=1) all commands runs smoothly.
please someone help/suggest how the problem can be resolve.

Thanks &Regards
VIKAS.