  We evaluate the second-generation Intel Xeon Phi coprocessor based on the
Intel Many Integrated Core (MIC) architecture, aka the Knights Landing or KNL,
for simulating neutrino oscillations in (core-collapse) supernovae. For this
purpose we have developed a numerical code XFLAT which is optimized for the MIC
architecture and which can run on both the homogeneous HPC platform with CPUs
or Xeon Phis only and the hybrid platform with both CPUs and Xeon Phis. To
efficiently utilize the SIMD (vector) units of the MIC architecture we
implemented a design of Structure of Array (SoA) in the low-level module of the
code. We benchmarked the code on the NERSC Cori supercomputer which is equipped
with dual 68-core 7250 Xeon Phis. We find that compare to the first generation
of the Xeon Phi (Knights Corner a.k.a KNC) the performance improves by many
folds. Some of the problems that we encountered in this work may be solved with
the advent of the new supernova model for neutrino oscillations and the
next-generation Xeon Phi.
