A Parameter Server implementation using the JAMScript language
The jamscript language can be installed here: to install, run install.sh; JAMScript has worked on MacOS and Linux (Arch, Ubuntu, Raspian). Note that on some macos devices, brew can install mosquitto to a directory outside of the system path, so it may need to be added to PATH, C_INCLUDE_PATH, and/or LIBRARY_PATH manually; the jamtools should also be added to the PATH.
Once installed, the parameter server can be compiled with jamc -d pajameter.*, which will produce a file pajameter.jxe if JAMScript was installed correctly.
Before running, the global mosquitto broker should be started using the configuration files found in the JAMScript source; run mosquitto -c temp/mosq18830.conf. This makes the connections faster and more reliable, but is not strictly necessary.
To run, use the jamrun command.
jamrun pajameter.jxe --app=ps --fog will start the parameter server; this should be done once.
jamrun pajameter.jxe --app=ps will start a worker; this can be done as many times as desired.
The sequential reference implementation can be compiled through the makefile.