[Pw_forum] relaxation

[saman ghaderyan]

hi
i run relaxation for AlAs with nat=4
Al   0.00 0.00  0.00
As  0.25 0.25  0.25
Al   0.50  0.50  0.00
As -0.25 0.25 0.25
but i don't know why these atomic position have error
thanks