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The wall-clock core-hours (WCH) are the basic metric of computer utilization time.
The wall-clock core-hours (WCH) are the basic metric of computer utilization time.
1 wall-clock core-hour is defined as 1 processor core allocated for 1 hour of wall clock time. Allocating a full node (24 cores)
1 wall-clock core-hour is defined as 1 processor core allocated for 1 hour of wall clock time. Allocating a full node (24 cores)
for 1 hour amounts to 24 wall-clock core-hours.
for 1 hour amounts to 24 wall-clock core-hours.
### Standard Core-Hours (SCH)
### Standard Core-Hours (SCH)
The resources that are currently subject to accounting are the standard core-hours (SCH).
The resources that are currently subject to accounting are the standard core-hours (SCH).
The standard core-hours are obtained from WCH by applying a standardization factor.
The standard core-hours are obtained from WCH by applying a standardization factor.
---8<--- "sch_formula.md"
---8<--- "sch_formula.md"
The accounting runs whenever the computational cores are allocated or blocked via the PBS Pro workload manager (the qsub command), regardless of whether
The accounting runs whenever the computational cores are allocated or blocked via the PBS Pro workload manager (the qsub command), regardless of whether
the cores are actually used for any calculation. See example in the [Job submission and execution](job-submission-and-execution/) section.
the cores are actually used for any calculation. See example in the [Job submission and execution](job-submission-and-execution/) section.