mache.parallel.memory.MemoryCapSupport

class mache.parallel.memory.MemoryCapSupport(*values)

Whether a machine will hold a launch to a memory cap.

Memory is deliberately not part of ResourcePlacement: a placement says where a launch runs, and a cap says how much memory it may use, which is a different statement. This reports what the second one is worth on the current machine.

Variables:

• ENFORCED (MemoryCapSupport) – The batch system holds a launch to its cap and kills it for exceeding it. A caller can rely on the cap as a limit, though not as a reservation – see get_parallel_command().

• NONE (MemoryCapSupport) – Nothing here will hold a launch to a cap, so mache renders none and a caller that exceeds what it meant to use will not be stopped. Either the launcher has no memory option at all, as PALS does not, or it accepts one and does not act on it, as Slurm before 20.11 does.

__init__()

Attributes

ENFORCED
NONE