Computed residual : 1.#INF0e+000 #

[abhi005]

i dont know why this residual is coming and what it shows.please help me regarding this.what is this back engine exception?It shows this back engine exception everytime. how can i remove this ?I am also attaching my .py file.
WARNING #
# #
# The computed multigrid residual is greater than the required accuracy. #
# #
# Computed residual : 1.#INF0e+000 #
# Required accuracy : 1.00000e-012 #
# #
################################################################################


** Back Engine Exception : Singular value decomposition failed
** Location of Exception : mathutils.cpp:1603

[kstokbro]

Something is wrong in the calculation then. Try to make the metallic region larger and make the distance between the dielectric and the device larger, maybe 1 Å.

[abhi005]

thanks for your reply.I have done what you have suggested but still it shows infinity error.I think it is the problem of poission solver settings.I have choose neumann for both A and B.So i tried by changing these condition by setting B Bottom drichlet and now error is not infinity but quite large in the range of e+000.please suggest me in this direction .Am i going in right direction?