the Spectra-Cluster project : https://github.com/spectra-cluster/spectra-cluster
this project rewrites part of Spectra-Cluster with C++ for the purpose of utilizing the computing resource of Intel Phi coprocessot and is parallelized by OpenMP.
with JNI, this project can boost Spectra-Cluster-Hadoop :https://github.com/spectra-cluster/spectra-cluster-hadoop