| Both sides previous revision
Previous revision
|
Next revision
Both sides next revision
|
grid [2017/10/02 17:37]
popel [Job monitoring] |
grid [2017/10/03 14:52]
popel |
| |
| If you need GPU processing, see a special page about our [[:gpu|GPU cluster called DLL]] (which is actually a subsystem of LRC with an independent queue ''gpu.q''). | If you need GPU processing, see a special page about our [[:gpu|GPU cluster called DLL]] (which is actually a subsystem of LRC with an independent queue ''gpu.q''). |
| TODO: describe alternatives, e.g.: ms-guests tiny cluster, MetaCentrum / Cesnet cluster (all MFF students can use it), Amazon EC2, Microsoft Azure (some colleagues may have sometime free vouchers). | TODO: describe alternatives, e.g.: MetaCentrum / Cesnet cluster (all MFF students can use it), Amazon EC2, Microsoft Azure (some colleagues may have sometime free vouchers). |
| |
| ===== List of Machines ===== | ===== List of Machines ===== |
| ^ Name ^ CPU type ^ GHz ^cores ^ RAM(GB)^ note ^ | ^ Name ^ CPU type ^ GHz ^cores ^ RAM(GB)^ note ^ |
| | lrc[1,2] | Intel | 2.3 | 4 | 45 | **no computing here**, just submit jobs | | | lrc[1,2] | Intel | 2.3 | 4 | 45 | **no computing here**, just submit jobs | |
| | pandora[1-10] | 2xCore2 Intel Xeon | 2.6 | | 16 | special cluster&queue ''ms-guests.q'' | | |
| | sol[1-5] | Intel | 2.6 | 4 | 16 | you can ssh here and compute | | | sol[1-5] | Intel | 2.6 | 4 | 16 | you can ssh here and compute | |
| | sol[6-8] | Intel | 2.0 | 8 | 16 | you can ssh here and compute | | | sol[6-8] | Intel | 2.0 | 8 | 16 | you can ssh here and compute | |
| |
| Alternatively, you can ssh to one of the **sol machines** and submit jobs from here. It is allowed to compute here, which is useful e.g. when you have a script which submits your jobs, but it also collects statistics from the jobs outputs (and possibly submits new jobs conditioned on the statistics). However, the sol machines are relatively slow and may be occupied by your colleagues, so for bigger (longer) tasks, always prefer submission as separate jobs. | Alternatively, you can ssh to one of the **sol machines** and submit jobs from here. It is allowed to compute here, which is useful e.g. when you have a script which submits your jobs, but it also collects statistics from the jobs outputs (and possibly submits new jobs conditioned on the statistics). However, the sol machines are relatively slow and may be occupied by your colleagues, so for bigger (longer) tasks, always prefer submission as separate jobs. |
| |
| The **pandora machines** are in a special cluster (not accessible from lrc) and queue **ms-guests.q** available for our colleagues from KSVI and for students of [[http://ufal.mff.cuni.cz/courses/npfl102|Data intensive computing]] (see the 2016 handouts if you missed the course). | |
| |
| ===== Installation ===== | ===== Installation ===== |
| ''qsub **-N** my-name'' | ''qsub **-N** my-name'' |
| By default the name of a job (which you can see e.g. in ''qstat'') is the name of the ''script.sh''. This way you can override it. | By default the name of a job (which you can see e.g. in ''qstat'') is the name of the ''script.sh''. This way you can override it. |
| |
| |
| ''qsub **-S** /bin/bash'' | ''qsub **-S** /bin/bash'' |
| |
| ===== Other ===== | ===== Other ===== |
| | * There is a great course [[http://ufal.mff.cuni.cz/courses/npfl102|Data intensive computing]], see the 2016 handouts if you missed the course. |
| * You can use environment variables ''$JOB_ID'', ''$JOB_NAME''. | * You can use environment variables ''$JOB_ID'', ''$JOB_NAME''. |
| * One job can submit other jobs (but be careful with recursive:-)). A job submitted to the CPU cluster may submit GPU jobs (to the ''qpu.q'' queue). | * One job can submit other jobs (but be careful with recursive:-)). A job submitted to the CPU cluster may submit GPU jobs (to the ''qpu.q'' queue). |
