id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
20558	Avoid copying volumes to bytes when saving sessions	Tom Goddard	Tom Goddard	"When ChimeraX includes volume data in a session file it first converts the 3D array into bytes.  This makes a full copy of the data in memory which doubles the memory use and sometimes results in out of memory errors, especially on Windows, such as ticket #20552.

In ChimeraX 1.12 (possibly older versions) our session saving msgpack code can handle numpy arrays so we could avoid converting to a bytes object and avoid doubling the memory."	enhancement	assigned	moderate		Volume Data								all	ChimeraX