What is the difference between VPU and CPU time given in the OUTCAR file?
Thank you,
Mike
VPU vs CPU time
Moderators: Global Moderator, Moderator
-
Mike
- Newbie
- Posts: 2
- Joined: Tue Jul 12, 2005 8:21 pm
- License Nr.: jk35QGB7
VPU vs CPU time
Last edited by Mike on Tue Aug 09, 2005 9:33 pm, edited 1 time in total.
-
job
- Jr. Member
- Posts: 55
- Joined: Tue Aug 16, 2005 7:44 am
VPU vs CPU time
AFAIK VPU time is the cpu time, i.e. the amount of time the cpu has spent executing vasp. CPU time is the wallclock time. Yes, it's a bit backwards.
The difference CPU-VPU is the time spent on other tasks, or idling.
The difference CPU-VPU is the time spent on other tasks, or idling.
Last edited by job on Tue Aug 16, 2005 7:55 am, edited 1 time in total.
-
Mike
- Newbie
- Posts: 2
- Joined: Tue Jul 12, 2005 8:21 pm
- License Nr.: jk35QGB7
VPU vs CPU time
When VASP is run in parallel, does VPU time include the time taken to send the data between each nodes or is it just the sum of the times taken individually by each node?
Last edited by Mike on Tue Aug 16, 2005 1:20 pm, edited 1 time in total.