6 merge requests!368Update prace.md to document the change from qprace to qprod as the default...,!367Update prace.md to document the change from qprace to qprod as the default...,!366Update prace.md to document the change from qprace to qprod as the default...,!323extended-acls-storage-section,!196Master,!159Bjansik
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### Queue notes
### Queue notes
The job wallclock time defaults to **half the maximum time**, see table above. Longer wall time limits can be [set manually, see examples](job-submission-and-execution/).
The job wall-clock time defaults to **half the maximum time**, see table above. Longer wall time limits can be [set manually, see examples](job-submission-and-execution/).
Jobs that exceed the reserved wallclock time (Req'd Time) get killed automatically. Wallclock time limit can be changed for queuing jobs (state Q) using the qalter command, however can not be changed for a running job (state R).
Jobs that exceed the reserved wall-clock time (Req'd Time) get killed automatically. Wall-clock time limit can be changed for queuing jobs (state Q) using the qalter command, however can not be changed for a running job (state R).
Salomon users may check current queue configuration at <https://extranet.it4i.cz/rsweb/salomon/queues>.
Salomon users may check current queue configuration at <https://extranet.it4i.cz/rsweb/salomon/queues>.
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### Wall-clock Core-Hours WCH
### Wall-clock Core-Hours WCH
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 wallclock 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
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---8<--- "sch_formula.md"
---8<--- "sch_formula.md"
The accounting runs whenever the computational cores are allocated via the PBS Pro workload manager (the qsub command), regardless of whether
The accounting runs whenever the computational cores are allocated via the PBS Pro workload manager (the qsub command), regardless of whether
the cores are actually used for any calculation. All jobs are accounted in standard corehours, using factor F valid at the time of the execution:
the cores are actually used for any calculation. All jobs are accounted in standard core-hours, using factor F valid at the time of the execution:
The allocations are requested/granted in standard core-hours SCH.
The allocations are requested/granted in standard core-hours SCH.
Whenever the term core-hour is used in this documentation, we mean the standard core-hour, SCH.
Whenever the term core-hour is used in this documentation, we mean the standard core-hour, SCH.
The standard corehours were introduced to treat systems of different age on equal footing.
The standard core-hours were introduced to treat systems of different age on equal footing.
Standard corehour is an accounting tool to discount the legacy systems. The past (before 2017=09-05) F factors are all 1.0.
Standard core-hour is an accounting tool to discount the legacy systems. The past (before 2017-09-05) F factors are all 1.0.
In future, the factors F will be updated, as new systems are installed. Factors F are expected to only decrease in time.
In future, the factors F will be updated, as new systems are installed. Factors F are expected to only decrease in time.
See examples in the [Job submission and execution](job-submission-and-execution/) section.
See examples in the [Job submission and execution](job-submission-and-execution/) section.
### Consumed Resources
### Consumed Resources
User may check at any time, how many core-hours have been consumed by himself/herself and his/her projects. The command is available on clusters' login nodes.
User may check at any time, how many core-hours have been consumed by himself/herself and his/her projects. The command is available on cluster login nodes.