ganga:ganga
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| ganga:ganga [2012/08/01 16:56] – [Submitting a ROOT-job] decianm | ganga:ganga [2017/01/12 12:23] – bernet | ||
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| ===== Where to run ===== | ===== Where to run ===== | ||
| Ganga can be run on every lxplus node. The preferred option however is to run it locally from Zurich on grid-ui, as there are no (less) disk quota constraints. | Ganga can be run on every lxplus node. The preferred option however is to run it locally from Zurich on grid-ui, as there are no (less) disk quota constraints. | ||
| + | |||
| + | ===== Ganga configuration on Zurich Grid Cluster ===== | ||
| + | |||
| + | Before starting Ganga the first time on the Zurich cluster, download and install the following .gangarc file in your home directory. This will create the correct Ganga environement for you. | ||
| ===== Starting Ganga on lxplus / grid-ui ===== | ===== Starting Ganga on lxplus / grid-ui ===== | ||
| Line 400: | Line 404: | ||
| ===== Submitting a ROOT-job ===== | ===== Submitting a ROOT-job ===== | ||
| - | It can be useful to submit ROOT-jobs to the Grid via Dirac. You can submit | + | It can be useful to submit ROOT-jobs to the Grid via Dirac. You can submit |
| <code python> | <code python> | ||
| j = Job() | j = Job() | ||
| Line 407: | Line 411: | ||
| </ | </ | ||
| - | You can also pass arguments to a script. Suppose you have a script | + | You can also pass arguments to a script. Suppose you have a script |
| <code C> | <code C> | ||
| void myScript(int a, int b){ | void myScript(int a, int b){ | ||
| Line 432: | Line 436: | ||
| which will generate two subjobs with the arguments (1,2) and (2,3). | which will generate two subjobs with the arguments (1,2) and (2,3). | ||
| + | A complete example therefore would look like: | ||
| + | <code python> | ||
| + | argList=[] | ||
| + | for ia in range(1, | ||
| + | for ib in range(1,7): | ||
| + | | ||
| + | |||
| + | j = Job() | ||
| + | j.name = 'my great ROOT job' | ||
| + | j.inputsandbox = [ File ( name = '/ | ||
| + | j.application = Root ( | ||
| + | version = ' | ||
| + | usepython = False , | ||
| + | script = File ( name = '/ | ||
| + | argSplit = ArgSplitter( args = argList ) | ||
| + | j.splitter = argSplit | ||
| + | j.submit() | ||
| + | </ | ||
| + | |||
| + | *Note: Due to a weird bug (1.8.2012) 0 is not allowed as an argument... | ||
| + | *Note: When submitting a ROOT-job to the LSF, make sure the Ganga version in the shell you submit the ganga-job from and the one requested in '' | ||
| ===== Forcing a job to run on a specific site ===== | ===== Forcing a job to run on a specific site ===== | ||
| For this, do: | For this, do: | ||
| Line 445: | Line 470: | ||
| dirac-proxy-init -g lhcb_user | dirac-proxy-init -g lhcb_user | ||
| </ | </ | ||
| + | |||
| + | ===== Bookkeeping information within Ganga ===== | ||
| + | A simple method that can be added to the ~/.ganga.py to access information directly from the BK can be seen below: | ||
| + | |||
| + | <code python> | ||
| + | def getBKInfo ( evttype ) : | ||
| + | from subprocess import Popen, PIPE | ||
| + | |||
| + | serr = open ( '/ | ||
| + | pipe = Popen ( [ ' | ||
| + | | ||
| + | | ||
| + | | ||
| + | | ||
| + | stdout = pipe.stdout | ||
| + | ts = {} | ||
| + | result = {} | ||
| + | | ||
| + | for line in stdout : | ||
| + | | ||
| + | try : | ||
| + | value = eval ( line ) | ||
| + | except : | ||
| + | continue | ||
| + | | ||
| + | if not isinstance ( value , tuple ) : continue | ||
| + | if not isinstance ( value[0] , str ) : continue | ||
| + | if not isinstance ( value[1] , str ) : continue | ||
| + | if not isinstance ( value[2] , str ) : continue | ||
| + | |||
| + | if result.has_key ( value[0] ) : continue | ||
| + | result [ value[0] ] = value[1:] | ||
| + | |||
| + | return result | ||
| + | </ | ||
| + | |||
| + | In this case two additional files ' | ||
| + | |||
| + | More info can be found here: [[https:// | ||
| + | and here: [[https:// | ||
| ===== Help ===== | ===== Help ===== | ||
| To see the documentation, | To see the documentation, | ||
| - | ===== The n Commandments when working with Ganga ===== | + | ===== The N Commandments when working with Ganga ===== |
| *Thou shall be patient. | *Thou shall be patient. | ||
| *Thou shall never use PFNs when thou needest LFNs. | *Thou shall never use PFNs when thou needest LFNs. | ||
| - | *Thou shall write an email to '' | + | *Thou shall write an email to '' |
| *Thou shall start a test-job before running the full job. The ways of making mistakes are manifold. | *Thou shall start a test-job before running the full job. The ways of making mistakes are manifold. | ||
| *Thou shall always check if thy output will be bearable for thy quota. | *Thou shall always check if thy output will be bearable for thy quota. | ||
| Line 459: | Line 524: | ||
| Information for using ganga in LHCb (and where I stole most of the information from): [[http:// | Information for using ganga in LHCb (and where I stole most of the information from): [[http:// | ||
| + | Ganga/Dirac mailing list archive: [[https:// | ||
ganga/ganga.txt · Last modified: 2017/01/12 12:31 by bernet
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