Enqueue only STABLE and LEAK-FREE programs
Majorana is a cluster, neither a backup server nor a working server. Therefore only stable programs without memory leaks can be submitted to it. Valgrind and gdb are your friends. If a process creates troubles, it may be killed at any time without mercy.
Data can be erased at any moment
Data stored in majorana can be erased as a side effect of maintenance or simply because we wake up feeling like doing nasty things, so make sure you always backup your files on a different machine. This is especially true if you fill up all the space of a node or, even worse, majorana itself.
Limits for usage
This are the usage limits for each user has to comply with.
Concurrent slots per user
Maximum number of slots occupied concurrently per user:
Number of jobs per user
Maximum number of jobs in all queues per user:
Total number of jobs
Maximum total number of jobs in all queues for all users:
Maximum runtime per job
Maximum CPU time per job depends on the queues it’s running in. It can be either
24 or 168 hours
for the short and long/hi_mem queues respectively.
See the list of queue types for further information.