Run time vs CPU time

Author	Message
TUKIA Send message Joined: 19 Feb 12 Posts: 3 Credit: 5,072,024 RAC: 1,241	Message 1242382 - Posted: 6 Jun 2012, 18:06:26 UTC
	What makes the difference between Run time and CPU time?
	ID: 1242382 ·

Ageless Send message Joined: 9 Jun 99 Posts: 11761 Credit: 2,075,507 RAC: 2,430	Message 1242463 - Posted: 6 Jun 2012, 21:37:35 UTC - in response to Message 1242382.
	Run time is the time it takes for the task to run from start to finish, equal to wall-clock time. CPU time is the time that the CPU is actually working on the task. There are whole minutes that there's memory swapping taking place, in which the CPU isn't used. Or in the case of the GPU, where the CPU is only used to translate and transfer data, not to actually do any calculations as these happen on the GPU. ____________ Jord - BOINC FAQ Service - BOINC User Wiki Real is just a matter of perception.
	ID: 1242463 ·