  PHENIX measurements of high transverse momentum ($p_T$) identified hadrons in
$d$+Au and Au+Au collisions are presented. The nuclear modification factors
($R_{d{\rm A}}$ and $R_{\rm AA}$) for $\pi^0$ and $\eta$ are found to be very
consistent in both collision systems, respectively. Using large amount of $p+p$
and Au+Au datasets, the fractional momentum loss ($S_{\rm loss}$) and the
path-length dependent yield of $\pi^0$ in Au+Au collisions are obtained. The
hadron spectra in the most central $d$+Au and the most peripheral Au+Au
collisions are studied. The spectra shapes are found to be similar in both
systems, but the yield is suppressed in the most peripheral Au+Au collisions.
