安装MPI

cd mpich-3.2.1
./configure --disable-fortran  --prefix=/usr/local/mpich
make -j8 && make install

# 配置环境变量
export INSTALL_DIR=/usr/local/Ascend/ascend-toolkit/latest
export PATH=/usr/local/mpich/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/mpich/lib:$LD_LIBRARY_PATH