edmtcp is a simple Erlang port interface that makes use of DMTCP to do per-process management of application checkpoint/restore images.
By default, DMTCP's unit of granularity is based on handling whole computations rather than individual processes. edmtcp launches a new coordinator for every launched binary, with its port number written to /usr/local/share/edmtcp (by default, currently hardcoded), as well as storing all gzipped checkpoint images there.
No default interval is set, it must be set manually or checkpoints done manually.
It is currently quite rudimentary, and will be seeing significant polish. A more sophisticated strategy for storing and rotating checkpoint images will be added, along with more dynamic configuration.
$ rebar3 compile
Erlang/OTP 18 [erts-7.0] [source] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V7.0 (abort with ^G)
1> application:start(edmtcp). ok 2> edmtcp:launch("/bin/cat"). #Port<0.15755> 3> edmtcp:status("/bin/cat"). Coordinator: Host: localhost Port: 58546 Status... NUM_PEERS=1 RUNNING=yes CKPT_INTERVAL=0 (checkpoint manually) ok 4> edmtcp:set_interval("/bin/cat", 100). Interval changed to 100 ok 5> edmtcp:terminate("/bin/cat", quit). %% setting second arg to [] calls --kill ok 6> edmtcp:flush_share(). ok
MPLv2.