Build Supercomputers with Raspberry Pi 3

Summary

In this chapter, we learned how to test your supercomputer by first shutting down the entire cluster by using the shutdown -h now command at each node, and then reenergizing the super cluster to reinitialize the machine. This procedure was then followed by commanding multiple nodes simultaneously to demolish the time needed to solve the π equation. Recall that one core on the master Pi2 node, operating in the restrained mode, and using 300,000 iterations, took 58m2.393s to calculate π, and 6m58.102s using all 32 cores in the eight node cluster, while the Pi3 supercomputer, also operating in the restrained mode, took 39m34.726s to calculate π using one core, and only 5m8.955s using 32 cores, and an insanely 3m51.196s using all 64 cores ...