HPC
HPC

| HPC and Data for Lattice QCD

caosd

HPC and Data for Lattice QCD

caosd

Using 'caosd'

caosd is a simple program which keeps control of concurrent requests for using parts of a APEmille machine via the caos operating system. caosd runs on the apemaster and listens on port 10999 for messages from caos. If the environment variable USECAOSD is set to '1', caos will contact the caosd and try to book the requested resources. caosd maintains an internal list of currently running jobs. In order to avoid a wait-for-ever situation it checks whether those caos processes which booked the machine are still running. There are some further administration utilities to control caosd, which are not yet in cvs: bookmanager (list booked jobs), book (book machine by hand), free (free machine by hand).