1 # Simulation Files for PWGLF/FORWARD Production
3 Christian Holm Christensen
8 The files in this archive represents a generic approach to running
9 AliROOT based simulations. The idea is that the user/committer only
10 specifies the run number for which an anchor run is needed, and
11 possibly an event generator.
15 The shell and ROOT scripts, JDLs, and so on are based on previous
16 "official" production files, but with some differences. The main
17 difference comes about because we want to _automatically_ configure
18 the simulation based on the relevant GRP OCDB entry as possible.
20 To that end, I created the ROOT script `GRP.C` which will query the
21 OCDB for GRP for a specified run. In this way, we can get the beam
22 species, energy, and center of mass energy simply by passing a run
23 number. We can also select a default event generator based on these
26 * For pp, the default generator is *Pythia6*
27 * For PbPb, the default generator is *Hijing*
28 * For pPb/Pbp, the default generator is *DpmJet*
30 However, since all steps need to have access to the GRP data, it means
31 that all steering scripts must load `GRP.C`, and hence we can at no
32 point use any of previously used scripts.
34 ## Setting up a simulation
36 The idea of these scripts are that we only change things in one
37 well-defined place, and that the scripts react to JDL parameters so
38 that we can re-use the scripts (and settings) for many kinds of
41 ### Configuring which detectors to include
43 Create a class called `DetCfg` deriving from `VirtualDetCfg` and
44 have it return true/false for the detectors you want to have on/off.
45 The class _must_ be declared in `DetConfig.C` and the function
46 `DetConfig()` _must_ set the global object pointer `detCfg` to point
47 to a new instance of the class `DetCfg`.
49 The script `DetConfig.C` is executed by both `Simulate.C` and
50 `Reconstruct.C` to get the list of enabled detectors. The script is
51 also executed by `AOD.C` and `QA.C` to ensure that we do not add tasks
52 for which we have no data because the needed detectors was turned
55 ### Configuring OCDB specific storage locations
57 Create a class called `OCDBCfg` deriving from `VirtualOCDBCfg` and put
58 it in the script `OCDBConfig.C`. The function `OCDBConfig` _must_ set
59 the global object pointer `ocdbCfg` to point to a new instance of the
62 The script `OCDBConfig.C` is executed by both `Simulate.C` and
63 `Reconstruct.C` to set the list of specific storage locations.
65 One can override `VirtualOCDBCfg::Prefix()` to return the default
66 prefix for specific storage locations. The member function
67 `VirtualOCDBCfg::Init(bool forSim)` _must_ declare all specific storage
68 locations. The parameter `forSim` is true when executed from
69 `Simulate.C` and false when executed from `Reconstruct.C`
71 ### Configuring the QA tasks
73 Create the class `QACfg` deriving from `VirtualQACfg`, and override
74 member functions from `VirtualQACfg` to enable/disable specific QA
75 tasks and options. Put the class `QACfg` in the script `QAConfig.C`.
76 The function `QAConfig` _must_ set the global object pointer
77 `qaCfg` to point to a new instance of the class `QACfg`.
79 The script `QAConfig.C` is executed by `QA.C` to set which tasks and
82 ### Configuring the AOD tasks
84 Create the class `AODCfg` deriving from `VirtualAODCfg`, and override
85 member functions from `VirtualAODCfg` to enable/disable specific AOD
86 tasks and options. Put the class `AODCfg` in the script `AODConfig.C`.
87 The function `AODConfig` _must_ set the global object pointer
88 `aodCfg` to point to a new instance of the class `AODCfg`.
90 The script `AODConfig.C` is executed by `AOD.C` to set which tasks and
96 * `run.sh`: main steering executable (same as
97 `/alice/bin/aliroot_new`)
98 * `AOD.C`: AOD Filter train set-up. Derived from `AODtrainsim.C` but
99 modified to automatically get GRP parameters from OCDB using the
100 script `GRP.C` and set-up the train accordingly. Also, selection of
101 which tasks to include is done through the script `AODConfig.C`.
102 That means this script should never be modified by the user.
103 * `AODConfig.C`: Read by `AOD.C` to configure which tasks to include
105 * `Check.C`: Perform ESD check. Derived from `CheckESD.C`.
106 * `Config.C`: Simulation configuration script. Uses `GRP.C` to
107 automatically load the proper parameters for the Anchor run.
108 * `DetConfig.C`: Configuration script that sets which detectors to
109 turn on. This is used by all passes to ensure consistency.
110 * `Final.jdl.in`: Skeleton for final merging JDL. This is used for
111 both QA and AOD filtering.
112 * `GRP.C`: Script that defines the global variable `grp` which is
113 filled with values from the appropriate OCDB GRP entry for the
114 selected run. This is used in `AOD.C`, `Config.C`, `QA.C`,
115 `Reconstruct.C`, and `Simulate.C`.
116 * `LHC10hPS.C`: Special Physics Selection set-up for LHC10h due to
117 missing ZDC information to the trigger. Not needed as far as I can
119 * `Merge.jdl.in`: Skeleton for intermediate merging JDL. This is used for
120 both QA and AOD filtering.
121 * `OCDBConfig.C`: Set-up specific storage locations for simulation
122 and reconstruction. It defines the global object ocdbCfg which is
123 used in the `Simulate.C` and `Reconstruct.C` scripts.
124 * `QA.C`: QA train set-up. Derived from `QAtrainsim.C` but
125 modified to automatically get GRP parameters from OCDB using the
126 script `GRP.C` and set-up the train accordingly. Also, selection of
127 which tasks to include is done through the script `QAConfig.C`.
128 That means this script should never be modified by the user.
129 * `QAConfig.C`: Read by `QA.C` to configure which tasks to include
131 * `Reconstruct.C`: Reconstruction steering script. Derived from
132 `rec.C` but modified to automatically get GRP parameters from OCDB
133 using the script `GRP.C` and set-up the job accordingly.
134 * `Run.jdl.in`: Skeleton for initial stage running.
135 * `simrun.sh`: Simulation shell script. Derived from basic `simrun.sh`
136 but adapted to the files here, allows passing the number of events
137 per job, pass the run number to relevant scripts, ignores
139 * `Simulate.C`: Simulation steering script. Derived from `sim.C` but
140 modified to automatically get GRP parameters from OCDB using the
141 script `GRP.C` and set-up the job accordingly.
142 * `Tag.C`: Tag ESD files.
143 * `merge.sh`: Shell script to steer merging jobs. Used by both
144 QA and AOD filtering. This is based on `/alice/bin/train_merge.sh`
145 but modified to call either the QA or AOD train merging.
147 The shell script `doit.sh` is the omnipotent script that steers all
148 parts of the simulation.
150 ## Usage of `doit.sh`
152 Usage: ./doit.sh [OPTIONS]
156 -t|--tag TAG Job tag (pp)
157 -i|--id NAME Name of production
158 -R|--run RUN_NO Run number
159 -c|--copy Copy files to AliEn
160 -n|--jobs JOBS Set number of jobs[**] (2)
161 -m|--events EVENTS Set events/job[**] (1)
162 -s|--stage STAGE Set the stage[***] (0)
163 -o|--output DIR Set base output directory[*] ($ALIEN_HOME/test)
164 -d|--data DIR Set data directory ($ALIEN_HOME/mc)
165 -b|--bin DIR Set base bin directory[*] ($ALIEN_HOME/bin)
166 -a|--aliroot RELEASE Set AliROOT release [*] (v5-04-Rev-20)
167 -r|--root RELEASE Set ROOT release [*] ()
168 -g|--geant RELEASE Set GEANT3 release [*] ()
170 [*] Only make sense with option -c
171 [**] Only make sense for stage 0
172 [***] If stage is set to 6, try to deduce the stage
173 automatically. If less than zero, do not do anything but copy
175 Note, if the ROOT and GEANT release is not specified, it will be
176 deduced from the AliROOT version.
178 * Make JDLs and copy files to `/alice/cern.ch/user/a/aliprod/PWGLFforwardMC`,
179 specifying that output should be based in `/alice/sim/2014`, and we
180 should use AliROOT v5-05-Rev-11, but not submitting any jobs
182 ./doit.sh -a v5-05-Rev-11 \
183 -d /alice/cern.ch/user/a/aliprod/PWGLFforwardMC \
188 * Submit 100 jobs each with 10 events for run 118506 with the same
189 parameters as above, using PhoJet
191 ./doit.sh -d /alice/cern.ch/user/a/aliprod/PWGLFforwardMC \
192 -i LHC14z9a -r 118506 -s 0 -n 100 -m 10 -g PhoJet
194 Output will end up in `/alice/sim/2014/LHC14z9a/118506`
196 * Submit merging jobs for the above production
198 ./doit.sh -d /alice/cern.ch/user/a/aliprod/PWGLFforwardMC \
199 -i LHC14z9a -r 118506 -s 6
201 Output will end up in `/alice/sim/2014/LHC14z9a/118506/`. Repeat
202 this until we hit the final merging.
206 The `Config.C` configuration script has been trimmed down
207 considerably. The script is now very generic since most settings are
208 derived from the GRP data.
212 When selecting the event generator, a more versatile and configurable
213 approach has been taken. `Config.C` defines the class `Setup` with
214 the constructor `Setup::Setup(const char* genName)`. Here `genName`
215 is passed verbatim from the `Run.jdl` JDL file. The string is then
216 passed to method `VirtualEGCfg::MakeGenerator` which in turn calls the
217 virtual `VirtualEGCfg::CreateGenerator`. This can be overwritten in a
218 derived class to make particular event generators. The provided
219 implementation in `EGConfig.C` (loaded by `Config.C`) internally has a
220 switch on this string to find the chosen event generator. If no
221 suitable generator can be found, the script will fail with a `Fatal`
224 Generators are specified as
226 > _name_[_sub-type_[_sub-sub-type_]]
228 where _sub-type_ (and _sub-sub-type_) are optional. Currently defined
229 event generators are (case insensitive)
231 * `pythia` Pythia6 Min.Bias. Optional sub-types:
232 * `perugia0` Perugia0 tune. Optional sub-sub-types:
233 * `chadr` Heavy flavour charm w/hadronic decay signals added
234 * `bchadr` Heavy flavour beauty/charm w/hadronic decay signals added
235 * `cele` Heavy flavour charm signals added
236 * `bele` Heavy flavour beauty/charm signals added
237 * `jspi2e` J/Psi to electrons signals added
238 * `btojspi2e` Beauty to J/Psi to electrons signals added
239 * `D6T` Rick Field's CDF Tune D6T
240 * `atlas` Arthur Moraes' (new) ATLAS tune, possibly with
242 * `_flat` for flat multiplicity probability from 0 to 200
243 * `jets` Jets in central barrel
244 * `hijing` Hijing Min.Bias. For pPb and Pbp a
245 cocktail with slow neutrons is made. Optional sub-types:
246 * `2000` No quenching and hard pT cut at 2.3GeV. Possible
248 * `hf` Random heavy flavour signal added (see for pythia
250 * `ampt` AMPT min bias. Possible sub types are:
251 * `hf` Random heavy flavour signal added (see for pythia
254 * `phojet` Same as `dpmjet`
257 More generators can easily be added. The idea is to have a standard
258 `EGConfig.C` which can be expanded upon, but if a user has very
259 special requirements it is possible to provide ones own `EGConfig.C`
267 * _run number_: The run number
268 * _n jobs_: Number of sub-jobs to commit
269 * _n events_: Number of events per sub-job
270 * _tag_: The tag to put in produced files under (e.g., `LHC14z9a`)
271 * _other_: A colon (:) separated list of options and arguments for
272 `simrun.sh`. These can include
273 * `bmin`:_LEAST_B_ The smallest impact parameter to make
274 * `bmax`:_LARGEST_B_ The largest impact parameter to make
275 * `process`:_EG_STRING_ The event generator to use.
276 that is, to specify using DpmJet with an impact parameter range of 0
277 to 5fm, one must pass `process:dpmjet:bmin:0:bmax:5`
281 * _run number_: The run number
282 * _stage_: Stage number (1-4)
283 * _tag_: The tag to put in produced files under (e.g., `LHC14z9a`)
284 * _what_: What to merge: either `AOD` or `QA`
288 * _run number_: The run number
289 * _stage_: Stage number (1-4)
290 * _tag_: The tag to put in produced files under (e.g., `LHC14z9a`)
291 * _what_: What to merge: either `AOD` or `QA`
293 ## JDL Skeleton Substitutions
295 * _@out@_: The base of the output directory e.g., `/alice/sim/2014/`
296 * _@data@_: The directory where scripts, etc. are stored e.g.,
297 `/alice/cern.sh/user/a/aliprod/PWGLFforwardMC`
298 * _@aliroot@_: AliROOT version to use e.g., `v5-04-Rev-20`
299 * _@root@_: ROOT version to use e.g., `v5-34-08-6`
300 * _@geant@_: GEANT3 version to use e.g., `v1-15a-1`
302 ## ROOT Script Prototypes
304 ### `AOD.C(UInt_t run, const char* xmlfile, Int_t stage)`
306 * _run_: The run number
307 * _xmlfile_: Not used, compatibility with `QA.C`
308 * _stage_: Running stage (0: production, otherwise merge)
310 ### `QA.C(UInt_t run, const char* xmlfile, Int_t stage)`
312 * _run_: The run number
313 * _xmlfile_: Current list of input files. Must not contain `Stage`
315 * _stage_: Running stage (0: production, otherwise merge)
317 ### `GRP.C(UInt_t run)`
319 * _run_: The run number
321 ### `Reconstruct.C(UInt_t run)`
323 * _run_: The run number
325 ### `Simulate.C(UInt_t run, Int_t nev)`
327 * _run_: The run number
328 * _nev_: Number of events per sub-job
330 ## Shell Script Arguments
334 All arguments are passed on to other script e.g., `simrun.sh`
338 * _--run_ *RUN*: The Run number
339 * _--event_ *INTEGER*: Number of events per sub-job
340 * _--process_ *LABEL*: The Event Generator to use. If not specified
341 or equal to `default` then select default EG based on collision
343 * _--field_ *VALUE*: Ignored - obtained from OCDB
344 * _--energy_ *VALUE*: Ignored - obtained from OCDB
345 * _--physicslist_ *VALUE*: Ignored
346 * _--bmin_ FERMI: Least imapact parameter
347 * _--bmax_ FERMI: Largest imapact parameter
348 * _--pthardbin_ *VALUE*: Ignored
349 * _--quench_ *VALUE*: Quenching type to use
351 * _--number-- *INTEGER*: Sub-job number
352 * _--qa__: Also run QA train
353 * _--aod_: Also run AOD train
357 * _which_: What to do merging of (either `QA` or `AOD`)
358 * _run_: The run number
359 * _dir_: Directory where intermediate data can be found
360 * _stage_: Stage to execute