Method meshgrid

ot/backend.py:2657–2658

(self, a, b)

                return cp.linspace(start, stop, num, dtype=type_as.dtype)

    def meshgrid(self, a, b):
        return cp.meshgrid(a, b)

    def diag(self, a, k=0):
        return cp.diag(a, k)