Project

General

Profile

Running DAQ Interface » History » Version 110

John Freeman, 03/19/2015 04:37 PM

1 58 John Freeman
{{toc}}
2 58 John Freeman
3 96 John Freeman
!DAQ_communication_diagram4.png!
4 96 John Freeman
5 49 Erik Blaufuss
h1. Getting help
6 1 John Freeman
7 78 John Freeman
If, after reading this document (in particular, the "Troubleshooting and FAQ" section) you run into issues, or have questions, please contact:
8 49 Erik Blaufuss
* DAQInterface
9 49 Erik Blaufuss
** John Freeman - jcfree@fnal.gov
10 62 John Freeman
* RunControl
11 49 Erik Blaufuss
** Erik Blaufuss - blaufuss@icecube.umd.edu
12 66 John Freeman
* Configuration Manager
13 66 John Freeman
** Jon Paley - jpaley@anl.gov
14 1 John Freeman
15 102 Erik Blaufuss
h1. Logbook
16 102 Erik Blaufuss
17 102 Erik Blaufuss
Please document all changes, software updates, and operational activities to the ELog:
18 102 Erik Blaufuss
19 102 Erik Blaufuss
http://dbweb3.fnal.gov:8080/ECL/lbne_35t
20 95 John Freeman
21 1 John Freeman
h1. Starting DAQInterface and Run Control
22 1 John Freeman
23 66 John Freeman
The DAQ software, consisting of RunControl, the configuration manager and DAQInterface (as well as the artdaq processes it controls) is designed to be run on lbne35t-gateway01.fnal.gov, using the lbnedaq account. If you need access to the lbnedaq@lbne35t-gateway01.fnal.gov account, please contact one of us.
24 49 Erik Blaufuss
25 91 John Freeman
The installed code is located at lbne35t-gateway01.fnal.gov:/data/lbnedaq/daqarea/lbnerc. To get started, login and first setup the environment:
26 49 Erik Blaufuss
27 30 John Freeman
<pre>
28 33 John Freeman
ssh lbnedaq@lbne35t-gateway01.fnal.gov
29 91 John Freeman
cd /data/lbnedaq/daqarea
30 1 John Freeman
source fireup
31 1 John Freeman
</pre>
32 1 John Freeman
33 91 John Freeman
This will take you into the /data/lbnedaq/daqarea/lbnerc directory. It's a good idea to check whether lbnecontrol (the RunControl application), DAQInterface (the component which intermediates between RunControl, the configuration manager, and the artdaq processes) and the configuration manager are already running; if they are, the instructions below won't work. Also worth noting is that as of 11/21/14, attempts to use multiple DAQs (implying multiple instances of RunControl, DAQInterface, etc.) has not been attempted and likely will not work. To check for RunControl and DAQInterface, you can try:
34 1 John Freeman
35 1 John Freeman
<pre>
36 49 Erik Blaufuss
lbnecmd check
37 1 John Freeman
</pre>
38 1 John Freeman
39 61 John Freeman
This will display the current state of DAQInterface and RunControl. The example below shows that both RunControl and DAQInterface are running, but the DAQ run is in the stopped state:
40 49 Erik Blaufuss
<pre>
41 49 Erik Blaufuss
(env)[lbnedaq@lbne35t-gateway01 lbnerc]$ lbnecmd check
42 49 Erik Blaufuss
lbnecontrol: running
43 49 Erik Blaufuss
daqint@localhost:5770 (synchronous): stopped
44 49 Erik Blaufuss
</pre>
45 1 John Freeman
46 73 John Freeman
If RunControl is running, and at some point DAQInterface was running but has since been killed:
47 73 John Freeman
<pre>
48 73 John Freeman
lbnecontrol: running
49 73 John Freeman
daqint@localhost:5770 (synchronous): missing
50 73 John Freeman
</pre>
51 91 John Freeman
(In this case, just restart DAQInterface -- how to do this is described shortly).
52 73 John Freeman
53 49 Erik Blaufuss
If RunControl is not running, you'll see something like:
54 1 John Freeman
<pre>
55 49 Erik Blaufuss
(env)[lbnedaq@lbne35t-gateway01 lbnerc]$ lbnecmd check
56 49 Erik Blaufuss
check failed: '[Errno 111] Connection refused'.  Is lbnecontrol running?
57 1 John Freeman
</pre>
58 1 John Freeman
59 61 John Freeman
To check whether the configuration manager is running, you can simply use Linux commands:
60 61 John Freeman
61 61 John Freeman
<pre>
62 61 John Freeman
ps aux | grep -v grep | grep CfgMgrApp
63 61 John Freeman
</pre>
64 61 John Freeman
65 109 Thomas Dealtry
This will either return info on CfgMgrApp (the actual name of the configuration manager process), or print nothing if it's not running. Similarly, you can check whether the TDU XMLRPC server is running using:
66 71 John Freeman
67 71 John Freeman
<pre>
68 109 Thomas Dealtry
ps aux | grep -v grep | grep tdu
69 1 John Freeman
</pre>
70 1 John Freeman
71 109 Thomas Dealtry
In fact, it's possible to use Linux commands to check the status of all four programs:
72 109 Thomas Dealtry
73 109 Thomas Dealtry
<pre>
74 109 Thomas Dealtry
ps aux | grep -v grep | egrep -e lbnecontrol -e daqinterface -e CfgMgrApp -e tdu
75 109 Thomas Dealtry
</pre>
76 109 Thomas Dealtry
77 110 John Freeman
If you wish to kill any of these processes (described in the next section), the PID (process ID) to use is supplied as the second field in each row returned by the "ps aux" command.
78 105 John Freeman
79 109 Thomas Dealtry
h3. Cleanup: killing RunControl, DAQInterface, the configuration manager, and the TDU XMLRPC server
80 105 John Freeman
81 105 John Freeman
To begin using the DAQ, you'll want to kill off any existing RunControl and/or DAQInterface processes. With the process IDs obtained from the command described in the previous section, you can kill any pre-existing such processes. Keep in mind, of course, that if these processes are running, it might mean that someone else is using the DAQ, or that someone else who's done using it forgot to clean up. As the 9th and 10th fields of the row of variables "ps aux" returns concern how long the program has been running, you can use these values as well as your best judgement, then, before deciding these processes are not in active use and killing them. To kill them, again keeping in mind that the second field returned from "ps aux" is the process id (PID), use:
82 105 John Freeman
<pre>
83 105 John Freeman
kill <PID>
84 105 John Freeman
</pre>
85 110 John Freeman
If DAQInterface was in any state other than "stopped" at the time it was killed, it's quite possible that it's left "orphaned" artdaq processes. If this is the case, you'll want to clean these up before trying to run the DAQ again, as they'll block the ports if they remain alive as "zombie" processes. Check the DAQInterface configuration file (defaults to lbnerc/docs/config.txt unless an alternate was supplied via the "-f" option to DAQInterface) to see which node the PMT (Process Management Tool) was running on, and check for it with
86 105 John Freeman
<pre>
87 105 John Freeman
ps aux | grep -v grep | grep pmt.rb
88 105 John Freeman
</pre>
89 105 John Freeman
Use this to get the process ID to kill it. Of course, also be aware that if artdaq processes were in communication with hardware when the orphaning occurred, killing them off might result in issues for the hardware, but the specifics of any hardware issues that may arise go beyond the scope of this document.
90 105 John Freeman
91 1 John Freeman
h3. Starting RunControl
92 49 Erik Blaufuss
93 49 Erik Blaufuss
To start RunControl (after loading environment as above):
94 60 John Freeman
<pre>
95 104 John Freeman
rm -f /tmp/lbnecontrol.pid  # (This should only be necessary if RunControl software wasn't stopped cleanly)
96 49 Erik Blaufuss
lbnecmd launch
97 49 Erik Blaufuss
</pre>
98 1 John Freeman
99 1 John Freeman
h3. Starting DAQInterface
100 1 John Freeman
101 61 John Freeman
To start DAQInterface (after loading environment as above), the basic command is:
102 1 John Freeman
<pre>
103 82 John Freeman
daqinterface -n daqint -r 5570 -c localhost -H localhost -f <daqinterface file> &
104 1 John Freeman
</pre>
105 82 John Freeman
Here, the "daqint" argument is arbitrary, and is the name you'll give the DAQInterface process in RunControl; the "5570" argument is the port off of which DAQInterface will run. The "-f <daqinterface file>" is optional; if left out, the lbnerc/docs/config.txt file will be used to configure DAQInterface, otherwise <daqinterface file> will be used. The DAQInterface configuration is not to be confused with run configurations handled by the configuration manager; see the section "Configuring DAQInterface" for more. 
106 82 John Freeman
107 82 John Freeman
If multiple users with different terminals wish to check the DAQ output, it is recommended to try:
108 1 John Freeman
<pre>
109 82 John Freeman
stdbuf -oL daqinterface -n daqint -r 5570 -c localhost -H localhost -f <daqinterface file> >>~/DI.log 2>&1 &
110 1 John Freeman
</pre>
111 91 John Freeman
This will launch daqinterface in the background, with all messages being appended to the bottom of the file ~/DI.log  (The stdbuf -oL prevents buffering of output to the file, so the file should update in real time)
112 82 John Freeman
113 1 John Freeman
h3. Starting the configuration manager
114 1 John Freeman
115 1 John Freeman
Please see the "Starting up the CfgMgrApp on lbne35t-gateway01" section of Jon Paley's documentation here: https://cdcvs.fnal.gov/redmine/projects/fhicl_cfgmgr/wiki
116 109 Thomas Dealtry
117 109 Thomas Dealtry
h3. Starting the TDU XMLRPC server
118 109 Thomas Dealtry
119 109 Thomas Dealtry
<pre>
120 109 Thomas Dealtry
tdu -T 192.168.100.201 -P 10001 -H localhost -r 50008
121 109 Thomas Dealtry
</pre>
122 109 Thomas Dealtry
123 109 Thomas Dealtry
Note that if you are using emulators, you don't need to run using the TDU. Remember to set 'TDU XMLRPC port' to less than or equal 0.
124 109 Thomas Dealtry
125 109 Thomas Dealtry
See [[Starting and using TDUControl]] for more details.
126 62 John Freeman
127 61 John Freeman
h1. Configuring and starting Runs
128 1 John Freeman
129 107 John Freeman
Now, you can take the DAQ system through the standard transitions to start a DAQ run.  At all stages, you can use the "lbnecmd check" command to see what state DAQInterface is in; note that you'll want to wait for a transition to complete before issuing another one, otherwise you'll receive a warning and the transition request will be ignored. DAQInterface will also report when transitions are complete -- e.g., at the end of the "initialize" transition, you'd see:
130 49 Erik Blaufuss
<pre>
131 49 Erik Blaufuss
Initialize transition complete; if running DAQInterface in the background, can press <enter> to return to shell prompt
132 1 John Freeman
</pre>
133 108 John Freeman
Note that if a high "debug level" has been set (see below for more on this), this message can get buried in a set of output messages; in this case "lbnecmd check" may be the easiest way to determine what state the system is in. Described in more detail later, the chain of states (in quotes) and transitions (in italics) in the DAQ system can be represented as follows:
134 1 John Freeman
135 108 John Freeman
---
136 108 John Freeman
137 107 John Freeman
"stopped" -> _init_ -> "ready" -> _start_ -> "running" -> _pause_ -> "ready" -> _resume_ -> "running" -> _stop_ -> "ready" -> _terminate_ -> "stop"
138 108 John Freeman
139 108 John Freeman
---
140 1 John Freeman
141 94 John Freeman
h2.  Selecting a run configuration and DAQ components
142 49 Erik Blaufuss
143 1 John Freeman
*Before initializing or starting a DAQ run*, a configuration and set of DAQComponents must be selected.  This is done via RunControl.
144 1 John Freeman
145 49 Erik Blaufuss
h3. List and select a configuration:
146 1 John Freeman
147 62 John Freeman
To see the list of available configurations (queried from the configuration manager):
148 49 Erik Blaufuss
<pre>
149 49 Erik Blaufuss
lbnecmd listconfigs
150 1 John Freeman
</pre>
151 49 Erik Blaufuss
Will return a list of configs:
152 49 Erik Blaufuss
<pre>
153 49 Erik Blaufuss
Available configs (Name : description)
154 1 John Freeman
155 49 Erik Blaufuss
demo : Pithy description
156 49 Erik Blaufuss
tmp1 : Pithy description
157 49 Erik Blaufuss
...
158 30 John Freeman
159 49 Erik Blaufuss
Current selected config: No Config
160 49 Erik Blaufuss
</pre>
161 49 Erik Blaufuss
This lists all available configs, as well as the current selected config (Note, default config is "No Config").  You can then select a configuration:
162 49 Erik Blaufuss
<pre> 
163 49 Erik Blaufuss
lbnecmd setconfig demo
164 1 John Freeman
</pre>
165 90 John Freeman
This will return "OK" if successful; "lbnecmd listconfigs" will then show this as the current config.  If the specified configuration is not known, an error is returned. Instructions on how to add a configuration are given later in this document.
166 1 John Freeman
167 49 Erik Blaufuss
h3. List and select DAQ components.
168 1 John Freeman
169 62 John Freeman
You can select which portions of the LBNE DAQ setup you want to use in the upcoming run.  These are mapped generally to the ArtDAQ BoardReaderMain processes
170 90 John Freeman
that read them out.   As an operator, you need to ensure that there are configuration files available in the configuration manager for the DAQ Components that you select here, or DAQInterface will return an error.
171 38 John Freeman
172 1 John Freeman
To see the list of available DAQ components:
173 49 Erik Blaufuss
<pre>
174 1 John Freeman
lbnecmd listdaqcomps
175 49 Erik Blaufuss
</pre>
176 62 John Freeman
Will return a list of components available and selected (*Default* is ALL available components), e.g.:
177 1 John Freeman
<pre>
178 49 Erik Blaufuss
{'available': {'component02': ['lbnedaq2', '5206'], 'component01': ['lbnedaq2', '5205']}}
179 49 Erik Blaufuss
{'selected': {'component02': ['lbnedaq2', '5206'], 'component01': ['lbnedaq2', '5205']}}
180 49 Erik Blaufuss
</pre>
181 62 John Freeman
Shown are the available components by name, along with the requested host/port to run the BoardReaderMain process on. You can then select a list of DAQ components to use in the run:
182 49 Erik Blaufuss
<pre>
183 49 Erik Blaufuss
lbnecmd setdaqcomps component01 component02
184 49 Erik Blaufuss
</pre>
185 62 John Freeman
This will return "OK" if successful ("lbnecmd listdaqcomps" will show this in the "selected" row of components).  If the specified compnents are not known, an error is returned.
186 49 Erik Blaufuss
To change the list of available components, see below.
187 29 John Freeman
188 91 John Freeman
h2. Initializing, starting, stopping and terminating a Run
189 1 John Freeman
190 66 John Freeman
For each of these transitions, please recall that while "lbnecmd <cmd>" returns very quickly, the actual issued command can take several seconds or minutes to complete.  Before issuing another command, be sure that the transition is complete by using the check command:
191 1 John Freeman
<pre>
192 49 Erik Blaufuss
lbnecmd check
193 1 John Freeman
</pre>
194 62 John Freeman
For example, before issuing the "start" transition, you can use this command to ensure that the DAQ is in the "ready" state and not still in the "initializing" stage.
195 1 John Freeman
196 92 John Freeman
First, take DAQInterface from the "stopped" to the "ready" state; this will create the artdaq processes on the hosts you selected (DAQ components), and initialize them with the FHiCL documents:
197 1 John Freeman
<pre>
198 1 John Freeman
lbnecmd init daq
199 1 John Freeman
</pre>
200 1 John Freeman
201 49 Erik Blaufuss
Take DAQInterface from the "ready" to the "running" state, in order to begin taking data:
202 29 John Freeman
<pre>
203 1 John Freeman
lbnecmd start daq
204 29 John Freeman
</pre>
205 49 Erik Blaufuss
Note: the current run number is displayed when DAQ is in the running state using the "lbnecmd check" command:
206 49 Erik Blaufuss
<pre>
207 49 Erik Blaufuss
lbnecmd check
208 49 Erik Blaufuss
lbnecontrol: running
209 49 Erik Blaufuss
Run number: 207
210 49 Erik Blaufuss
Run configuration: demo
211 1 John Freeman
212 49 Erik Blaufuss
daqint@localhost:5570 (synchronous): running
213 49 Erik Blaufuss
</pre>
214 49 Erik Blaufuss
215 49 Erik Blaufuss
Pause the running of the DAQ, putting DAQInterface into the "paused" state.  This will cause the current open output file to be closed and given a name reflecting the current run number:
216 22 John Freeman
<pre>
217 21 John Freeman
lbnecmd pause daq
218 42 John Freeman
</pre>
219 41 John Freeman
220 1 John Freeman
Resume the running of the DAQ, putting returning to the "running" state.  This will restart data taking to a new output file:
221 48 John Freeman
<pre>
222 48 John Freeman
lbnecmd resume daq
223 48 John Freeman
</pre>
224 48 John Freeman
225 48 John Freeman
Halt the running of the DAQ, returning DAQInterface to the "ready" state from the "running" state:
226 48 John Freeman
<pre>
227 48 John Freeman
lbnecmd stop daq
228 49 Erik Blaufuss
</pre>
229 49 Erik Blaufuss
From the ready state, you can start a new run with the same configuration and DAQ components you originally selected. 
230 62 John Freeman
*NOTE* To select a new configuration or DAQ component set, you must kill all ArtDAQ processes and return DAQInterface to its "stopped" state with the "terminate" command:
231 1 John Freeman
232 1 John Freeman
<pre>
233 1 John Freeman
lbnecmd terminate daq
234 1 John Freeman
</pre>
235 67 Erik Blaufuss
236 67 Erik Blaufuss
If you want to stop all RunControl processes (known as "lbnecontrol"):
237 67 Erik Blaufuss
<pre>
238 67 Erik Blaufuss
lbnecmd kill
239 67 Erik Blaufuss
</pre>
240 67 Erik Blaufuss
After this, you will need to relaunch RunControl as above.
241 1 John Freeman
242 49 Erik Blaufuss
h2. After your DAQ run.
243 1 John Freeman
244 49 Erik Blaufuss
Once you've completed your run, there are a few things you can look at. 
245 48 John Freeman
246 76 John Freeman
h3. The DAQ log
247 76 John Freeman
248 83 John Freeman
A record of the DAQ's output will be saved in the subdirectory pmt/ relative to where you specified the output logfiles; thus given the "log directory" setting in the example DAQInterface configuration file below, you'd find the output in /data/lbnedaq/daqlogs/pmt/. 
249 76 John Freeman
250 76 John Freeman
h3. The run record
251 76 John Freeman
252 91 John Freeman
Also, a record of the FHiCL documents sent to the artdaq processes, the configuration file used to control DAQInterface, and some further information will have been saved; as of this writing (12/3/14) the directory in which this can be found defaults to /data/lbnedaq/run_records/<run number>. 
253 92 John Freeman
** PLEASE NOTE that there may be slight differences between the saved FHiCL documents and the FHiCL documents specified in the DAQInterface configuration file (those that control the EventBuilderMain processes) and the run configuration (those that control the BoardReaderMain and AggregatorMain processes). The saved FHiCL document name is standardized to <processtype>_<host>_<port>_r<run number>.fcl, so, e.g, "EventBuilder_lbnedaq2_5235_r286.fcl" would be the saved name of /data/lbnedaq/fcl/EventBuilder_demo1.fcl, listed in the example DAQInterface configuration file above, assuming datataking was performed in run 286. 
254 1 John Freeman
** More importantly, the FHiCL document actually sent to the artdaq process may be slightly different than the FHiCL document provided for DAQInterface; this is because DAQInterface performs some bookkeeping on FHiCL variables which account for things such as the number of processes of a given type (note that it makes no changes which would affect the physics). It is this post-bookkeeping FHiCL document which actually gets sent to the processes which gets saved to the output directory. 
255 72 John Freeman
** The "further information" mentioned above is stored in a file of the form "metadata_r<run number>.txt"; it includes the configuration chosen for the run, the components used, as well as the commit hashes for the lbne-artdaq, lbnerc, and configuration directory used. E.g.,
256 72 John Freeman
<pre>
257 72 John Freeman
Config name: demo
258 72 John Freeman
Component #0: component01
259 72 John Freeman
Component #1: component02
260 72 John Freeman
lbne-artdaq commit: 13b523181a6f8ff6e78ede590d6372ed6193c79c
261 1 John Freeman
lbnerc commit: 288001cf015e1a763dbba482923fc7ac8f379ae6
262 1 John Freeman
/data/lbnedaq/config commit: 877e43fe3ad96991adf5d57dbfbdefb6300fde25
263 1 John Freeman
</pre>
264 76 John Freeman
265 81 John Freeman
h3. Output of the Art modules
266 76 John Freeman
267 81 John Freeman
Various Art modules may create various types of output. In particular, it's standard for one of the two AggregatorMains running in an artdaq-based DAQ to use Art's RootOutput module, which will save the assembled raw event in an Art-readable *.root file. The location of this output can be found in the FHiCL code used to control RootOutput. The other AggregatorMain typically will run other RootOutput modules designed to create plots, diagnostic printouts, etc.; the nature of the output here is too varied to neatly summarize, but checking the FHiCL code used to control these Art modules should reveal their output location.
268 76 John Freeman
269 76 John Freeman
To take a quick look at the Art-readable *.root file, with a version of lbne-artdaq newer than 11/25/14, you can do the following:
270 76 John Freeman
271 76 John Freeman
<pre>
272 76 John Freeman
cd <lbne-artdaq basedir>
273 76 John Freeman
source setupLBNEARTDAQ
274 76 John Freeman
rawEventDump -s <rootfile> -n <max events>
275 76 John Freeman
</pre>
276 76 John Freeman
277 76 John Freeman
where here, <lbne-artdaq basedir> is the parent directory of the lbne-artdaq package, <rootfile> is the Art-readable *.root file produced in a given run, and <max events> is the max events whose info you wish to look at. The output of this command will look something like the following:
278 76 John Freeman
279 76 John Freeman
<pre>
280 81 John Freeman
%MSG-i MF_INIT_OK:  art 01-Dec-2014 16:13:59 CST JobSetup 
281 76 John Freeman
Messagelogger initialization complete.
282 76 John Freeman
%MSG
283 81 John Freeman
%MSG-i PathConfiguration:  art 01-Dec-2014 16:14:00 CST JobSetup 
284 76 John Freeman
Multiple end paths have been combined into one end path,
285 76 John Freeman
"end_path" since order is irrelevant.
286 76 John Freeman
287 76 John Freeman
%MSG
288 81 John Freeman
01-Dec-2014 16:14:00 CST  Initiating request to open file /tmp/lbne35t_r000270_sr01_20141201T221127.root
289 81 John Freeman
01-Dec-2014 16:14:00 CST  Successfully opened file /tmp/lbne35t_r000270_sr01_20141201T221127.root
290 1 John Freeman
--------------------------------------------------------------
291 76 John Freeman
Package             |Version             |Timestamp           
292 81 John Freeman
artdaq-core         |v1_04_06            |01-Dec-2014 21:59:51 UTC
293 81 John Freeman
artdaq              |v1_12_04            |01-Dec-2014 22:01:57 UTC
294 81 John Freeman
lbne-artdaq         |v0_00_08            |01-Dec-2014 22:00:18 UTC
295 81 John Freeman
lbne-artdaq         |v0_07_00            |01-Dec-2014 22:02:57 UTC
296 76 John Freeman
--------------------------------------------------------------
297 81 John Freeman
Begin processing the 1st record. run: 270 subRun: 1 event: 1 at 01-Dec-2014 16:14:00 CST
298 76 John Freeman
PROCESS NAME | MODULE LABEL.. | PRODUCT INSTANCE NAME | DATA PRODUCT TYPE............ | PRODUCT FRIENDLY TYPE | SIZE
299 81 John Freeman
DAQ......... | daq........... | TOY1................. | std::vector<artdaq::Fragment> | artdaq::Fragments.... | ...2
300 1 John Freeman
DAQAG....... | TriggerResults | ..................... | art::TriggerResults.......... | art::TriggerResults.. | ...-
301 76 John Freeman
302 81 John Freeman
Total products (present, not present): 8 (2, 6).
303 76 John Freeman
304 1 John Freeman
PROCESS NAME | MODULE LABEL | PRODUCT INSTANCE NAME | DATA PRODUCT TYPE.................... | PRODUCT FRIENDLY TYPE.... | SIZE
305 76 John Freeman
DAQAG....... | BuildInfo... | LbneArtdaq........... | std::vector<artdaq::PackageBuildInfo> | artdaq::PackageBuildInfos | ...4
306 76 John Freeman
307 76 John Freeman
Total products (present, not present): 1 (1, 0).
308 76 John Freeman
309 81 John Freeman
01-Dec-2014 16:14:00 CST  Closed file /tmp/lbne35t_r000270_sr01_20141201T221127.root
310 76 John Freeman
311 76 John Freeman
TrigReport ---------- Event  Summary ------------
312 76 John Freeman
TrigReport Events total = 1 passed = 1 failed = 0
313 76 John Freeman
314 76 John Freeman
TrigReport ------ Modules in End-Path: end_path ------------
315 76 John Freeman
TrigReport  Trig Bit#    Visited     Passed     Failed      Error Name
316 76 John Freeman
TrigReport     0    0          1          1          0          0 printBuildInfo
317 76 John Freeman
TrigReport     0    0          1          1          0          0 out1
318 76 John Freeman
319 76 John Freeman
TimeReport ---------- Time  Summary ---[sec]----
320 1 John Freeman
TimeReport CPU = 0.003361 Real = 0.003000
321 1 John Freeman
322 76 John Freeman
Art has completed and will exit with status 0.
323 76 John Freeman
</pre>
324 76 John Freeman
The first thing you see here is the version and build time of the lbne-artdaq package and some of the main packages on which it depends. Then you see a listing of products in the root file, here including two fragments of type TOY1, produced by the ToySimulator fragment generator. Finally, a listing of passed events; the output here is the result of running with "-n 1" as an option, so as we'd expect there's only one event.
325 81 John Freeman
326 84 John Freeman
h1. Configuring DAQInterface: the DAQInterface configuration file
327 91 John Freeman
328 92 John Freeman
DAQInterface has some key information stored in a local configuration file, NOT to be confused with the run configuration described elsewhere on this wiki. Examples of this information are  location and ports for artdaq processes, location of lbne-artdaq software, debug (log) level, etc). These can be changed before the DAQInterface process is started. It's expected that for normal operations, these should not need to changed too often, and alterations will be primarily of developer or expert interest. If you ARE a developer/expert or are simply curious, take a look at the default DAQInterface configuration file, found in docs/config.txt (relative to /data/lbnedaq/daqarea/lbnerc); it should look something like the following:
329 1 John Freeman
<pre>
330 1 John Freeman
331 100 John Freeman
lbne-artdaq: /data/lbnedaq/daqarea/lbne-artdaq-base/build_lbne-artdaq
332 91 John Freeman
333 1 John Freeman
PMT host: lbnedaq3
334 100 John Freeman
PMT port: 5400
335 1 John Freeman
336 49 Erik Blaufuss
pause before initialization: 5
337 49 Erik Blaufuss
338 49 Erik Blaufuss
# debug level can range from 0 to 3 (increasing order of verbosity)
339 49 Erik Blaufuss
debug level: 1
340 49 Erik Blaufuss
341 49 Erik Blaufuss
log directory:   /data/lbnedaq/daqlogs
342 49 Erik Blaufuss
343 91 John Freeman
record directory: /data/lbnedaq/run_records
344 49 Erik Blaufuss
345 101 John Freeman
disable configuration check: false
346 101 John Freeman
347 101 John Freeman
TDU XMLRPC port: 0
348 101 John Freeman
349 91 John Freeman
EventBuilder host: lbnedaq2
350 91 John Freeman
EventBuilder port: 5235
351 91 John Freeman
EventBuilder fhicl: /data/lbnedaq/fcl/EventBuilder_demo1.fcl
352 48 John Freeman
353 91 John Freeman
EventBuilder host: lbnedaq2
354 91 John Freeman
EventBuilder port: 5236
355 91 John Freeman
EventBuilder fhicl: /data/lbnedaq/fcl/EventBuilder_demo2.fcl
356 48 John Freeman
357 91 John Freeman
Aggregator host: lbnedaq2
358 91 John Freeman
Aggregator port: 5265
359 48 John Freeman
360 91 John Freeman
Aggregator host: lbnedaq2
361 1 John Freeman
Aggregator port: 5266
362 1 John Freeman
363 1 John Freeman
</pre>
364 1 John Freeman
365 92 John Freeman
The meaning of these parameters is as follows:
366 92 John Freeman
367 92 John Freeman
* *lbne-artdaq* : the directory in which the desired build of lbne-artdaq to use is located
368 92 John Freeman
369 1 John Freeman
* *PMT host* : the host on which artdaq's process management tool script (pmt.rb, used by DAQInterface to launch and kill the artdaq processes) will run
370 100 John Freeman
* *PMT port* : pmt.rb's port
371 92 John Freeman
372 92 John Freeman
* *pause before initialization* : the time in seconds between when the artdaq processes have been created and when they're initialized via FHiCL documents; empirically a pause of 5 seconds seems to be sufficient (less than this an errors can occur; see below in the "Troubleshooting" section for more
373 92 John Freeman
374 92 John Freeman
* *debug level* : allows the user to set the verbosity level of the output to the screen; setting it to higher values creates greater verbosity, and as a practical matter, the range of settings is currently 0-3. Loosely speaking, "0" means minimal output (not much beyond simply announcing a transition is complete), "1" includes announcements of progress during transitions, "2" includes these announcements plus the values of certain variables as well as lbne-artdaq output, and "3" is primarily of developer interest. 
375 92 John Freeman
376 93 John Freeman
* *log directory* : the directory relative to which lbne-artdaq's pmt/*.log output (a record of what it sent to stdout) will be placed
377 93 John Freeman
378 93 John Freeman
* *record directory* : the directory to which metadata about the run (FHiCL documents used, DAQInterface configuration file used, etc.) gets sent
379 101 John Freeman
380 101 John Freeman
* *disable configuration check* : a boolean which can be set to "true" or "false"; normally this should be set to "false", which means that on the start transition, DAQInterface will intentionally fail and put itself into the "stopped" state if it discovers that edits have been made to the configuration directory since the last commit in that directory. If very frequent edits to the configuration directory are made during hardware debugging, however, switching this feature on to "true" can make life considerably easier. 
381 101 John Freeman
382 101 John Freeman
* *TDU XMLRPC port* : the value of the port through which DAQInterface will communicate with an XML-RPC server linked to the TDU. Needed for DAQInterface to send a sync pulse to the TDU at the beginning of the "start" and "resume" transitions. If this is set to 0 or a negative value, no sync pulse is attempted. For more on the TDU and its code, see Tom Dealtry's Wiki "here":https://cdcvs.fnal.gov/redmine/projects/lbne-daq/wiki/Starting_and_using_TDUControl
383 49 Erik Blaufuss
384 53 John Freeman
After these individual parameters, one defines the EventBuilderMain and AggregatorMain artdaq processes. Specifically, an EventBuilderMain is defined in three lines, where each line should contain "EventBuilder", and define the host and port on which the EventBuilderMain will run (to run an artdaq process on the same host as you're on, use "localhost") as well as the FHiCL document used to initialize the EventBuilderMain. AggregatorMain is defined similarly, using the token "Aggregator", but without the FHiCL document supplied, as this is supplied by the choice of configuration in the configuration manager. Best practice is to place the EventBuilderMain's FHiCL documents in the /data/lbnedaq/fcl directory. Please note that the order of processes matters, and that they should be listed front-end to back-end, i.e., EventBuilders should appear before Aggregators.
385 49 Erik Blaufuss
386 57 John Freeman
h1. Adding new configurations to RunControl
387 57 John Freeman
388 68 John Freeman
Adding a new configuration selectable from RunControl involves two steps: creating a directory with the desired name of the configuration which contains the desired FHiCL documents, and then committing that directory to the git repository. 
389 68 John Freeman
390 91 John Freeman
As of 11/20/14, the FHiCL documents associated with a given configuration are edited within the directory
391 57 John Freeman
<pre>
392 57 John Freeman
/data/lbnedaq/config/<named_configuration>
393 57 John Freeman
</pre>
394 57 John Freeman
where "named_configuration" would be the name of the configuration, in this example. Within this directory, the following files are expected:
395 57 John Freeman
* Aggregator1.fcl and Aggregator2.fcl, used to initialize the two AggregatorMain processes in the DAQ system
396 57 John Freeman
* <named_component>_hw_cfg.fcl, used to initialize the BoardReaderMain process running the fragment generator associated with detector component "named_component". Note that there can be any number of such files associated with a configuration, as long as a given component is registered to RunControl (see below, "Adding new DAQ Components to RunControl")
397 59 John Freeman
398 59 John Freeman
There are existing examples of configurations currently within /data/lbnedaq/config which can be studied (and even copied) for further guidance; however, please disregard the "tmp1" and "tmp2" configurations. Note that the FHiCL documents in these directories contain some variables which are set to "PLACEHOLDER", e.g.
399 59 John Freeman
<pre>
400 1 John Freeman
 event_builder_count: PLACEHOLDER
401 59 John Freeman
</pre>
402 68 John Freeman
Note that this is not legal FHiCL, but that DAQInterface will substitute in the appropriate value before using the FHiCL document to initialize an artdaq process; here, for example, it would replace "PLACEHOLDER" with the actual number of EventBuilderMain processes being run.
403 1 John Freeman
404 68 John Freeman
Once you've added a new configuration to /data/lbnedaq/config, you'll need to perform a git commit. Essentially,  /data/lbnedaq/config is not merely a collection of directories naming configurations, but also a git repository. In fact, if you run
405 68 John Freeman
<pre>
406 68 John Freeman
git log
407 68 John Freeman
</pre>
408 68 John Freeman
you'll see a history of the commits made to the repository. In order to commit the directory, a couple of steps need to be taken:
409 68 John Freeman
* From /data/lbnedaq/config/, run <pre>git add <named_configuration></pre>. This will "stage" the directory to be committed. Running <pre>git status</pre> should show you something like the following:
410 68 John Freeman
<pre>
411 68 John Freeman
# On branch master
412 68 John Freeman
# Changes to be committed:
413 68 John Freeman
#   (use "git reset HEAD <file>..." to unstage)
414 68 John Freeman
#
415 68 John Freeman
#	new file:   helloworld/Aggregator1.fcl
416 68 John Freeman
#	new file:   helloworld/Aggregator2.fcl
417 68 John Freeman
#	new file:   helloworld/component01_hw_cfg.fcl
418 68 John Freeman
#	new file:   helloworld/component02_hw_cfg.fcl
419 68 John Freeman
#
420 68 John Freeman
</pre>
421 68 John Freeman
* Next, run <pre>git commit -m "<commit message>"</pre>. The commit message should be your three initials followed by a colon, the name of the configuration followed by a colon, and then a brief description of the new configuration, including its name, e.g.:
422 68 John Freeman
<pre>
423 1 John Freeman
git commit -m "JCF: helloworld: This configuration does not exist in the actual repo, it's simply used for documentation purposes"
424 68 John Freeman
</pre>
425 68 John Freeman
Be aware of rules governing strings delimited by double quotes in bash -- i.e., don't try double quoting a word or phrase inside of your commit description. 
426 68 John Freeman
</pre>
427 68 John Freeman
Now, make sure that the commit took place correctly by running
428 68 John Freeman
<pre>
429 68 John Freeman
git diff HEAD
430 68 John Freeman
</pre>
431 68 John Freeman
If your commit is at the head of the master branch, you should see no output; additionally, if you run
432 1 John Freeman
<pre>
433 68 John Freeman
git log
434 68 John Freeman
</pre>
435 69 John Freeman
you should be able to see your commit at the top.
436 57 John Freeman
437 79 John Freeman
* Finally, make sure to push your change to the central repository; to do this, simply execute
438 79 John Freeman
<pre>
439 79 John Freeman
git push origin
440 79 John Freeman
</pre>
441 79 John Freeman
442 79 John Freeman
and now, if you run 
443 79 John Freeman
444 79 John Freeman
<pre>
445 79 John Freeman
git diff origin/master
446 79 John Freeman
</pre>
447 79 John Freeman
448 91 John Freeman
you should again see no output. Pushing to the central repository is important as this is essentially the backup area for configurations; if a user accidentally overwrites something in /data/lbnedaq/config, as long as commits have been pushed to the central repository there will still be a saved record of configurations before the overwrites took place. In fact, as of this writing (12/3/14), if either (A) edits have been made to the /data/lbnedaq/config directory since its most recent commit, or (B) that commit hasn't been pushed to the central repository, DAQInterface will refuse to execute the initialize transition. 
449 79 John Freeman
450 56 Erik Blaufuss
h1. Adding new DAQ Components to RunControl
451 49 Erik Blaufuss
452 49 Erik Blaufuss
The list of available DAQComponents (maps to BoardReader processes) is maintained by RunControl in the file:
453 49 Erik Blaufuss
<pre>
454 49 Erik Blaufuss
/home/lbnedaq/.lbnerc-components
455 18 John Freeman
</pre>
456 55 Erik Blaufuss
Each entry (name: host port) defines:
457 55 Erik Blaufuss
* name - name of the component, maps to a <name>_hw_cfg.fcl in CfgMgr's configuration directory
458 49 Erik Blaufuss
* host - hostname where BoardReader process will be started
459 49 Erik Blaufuss
* port - XMLRPC port to be used, must be unique and used by other processes.
460 18 John Freeman
461 49 Erik Blaufuss
For example:
462 49 Erik Blaufuss
<pre>
463 49 Erik Blaufuss
component01: lbnedaq2 5205
464 49 Erik Blaufuss
component02: lbnedaq2 5206
465 49 Erik Blaufuss
</pre>
466 49 Erik Blaufuss
Has two components (component01 and component02) both running on lbnedaq2 on ports 5205 and 5206.
467 27 John Freeman
468 49 Erik Blaufuss
h1.  Troubleshooting and FAQ
469 28 John Freeman
470 49 Erik Blaufuss
h2.  Common RunControl issues
471 27 John Freeman
472 49 Erik Blaufuss
h3. How can I get a list of all RunControl commands?
473 1 John Freeman
474 49 Erik Blaufuss
<pre>
475 49 Erik Blaufuss
lbnecmd help
476 49 Erik Blaufuss
</pre>
477 50 Erik Blaufuss
will list all available commands for RunControl with some details for help.  
478 50 Erik Blaufuss
 
479 1 John Freeman
h3.  No real configurations are listed by RunControl
480 45 John Freeman
481 49 Erik Blaufuss
If you run "lbnecmd listconfigs" and see something like:
482 45 John Freeman
<pre>
483 49 Erik Blaufuss
Available configs (Name : description)
484 49 Erik Blaufuss
485 49 Erik Blaufuss
dummy : Dummy description
486 45 John Freeman
</pre>
487 49 Erik Blaufuss
Instead of your expected configurations, RunControl is not able to connect to CfgMgr.  Please make sure it's running (https://cdcvs.fnal.gov/redmine/projects/fhicl_cfgmgr/wiki/Wiki)
488 1 John Freeman
489 49 Erik Blaufuss
h2.  Common DAQInterface issues
490 49 Erik Blaufuss
491 49 Erik Blaufuss
h3.  *Error handling*
492 49 Erik Blaufuss
493 49 Erik Blaufuss
As of this writing (11/14/14) certain potential problems have been anticipated and are handled within DAQInterface. These problems include:
494 49 Erik Blaufuss
# An artdaq process returns an error state after a transition request, or an exception is thrown by the XML-RPC library during the request
495 49 Erik Blaufuss
# During periodic checks, one or more artdaq processes expected to exist are not found
496 49 Erik Blaufuss
497 49 Erik Blaufuss
In either case, an error is reported via 0MQ to RunControl, and the "Recover" transition is automatically triggered. This transition is a fairly blunt instrument: it will kill any remaining artdaq processes and return DAQInterface to its original state of "stopped" (i.e., one in which it requires the "init" transition before anything else is done). 
498 49 Erik Blaufuss
499 84 John Freeman
h3. *Your change to the DAQInterface configuration file or the daqinterface.py code doesn't seem to do anything*
500 49 Erik Blaufuss
501 1 John Freeman
Make sure you kill the existing daqinterface process and restart it
502 49 Erik Blaufuss
503 54 John Freeman
h3. *On the initial transition ("lbnecmd init daq"), you see "error: [Errno 111] Connection refused"*
504 49 Erik Blaufuss
505 91 John Freeman
If a "Recover" is triggered and you can see via "lbnecmd check" that DAQInterface is in the "stopped" state, try initializing again. If that doesn't work, you can try increasing the value of the "pause before initialization" variable in the DAQInterface configuration file. Empirically, it appears there needs to be a pause of at least 5 seconds before the FHiCL documents can be successfully sent via XML-RPC to the processes; increasing this value may make it less likely that the "Connection refused" error occurs.
506 54 John Freeman
507 49 Erik Blaufuss
h3. *On the initial transition, you see a regularly updating printout saying "Waiting for all processes to be launched"*
508 1 John Freeman
509 1 John Freeman
Seeing one or two of these is fine. If, after several seconds, something like the following
510 1 John Freeman
<pre>
511 1 John Freeman
Waiting for all processes to be launched; if zombie pmt.rb is running on localhost please kill it and this program (PID 31820)
512 1 John Freeman
</pre>
513 1 John Freeman
keeps getting output to screen, it means there's a problem initializing. In this case, the current (11/12/14) course of action is to externally kill DAQInterface using the PID listed; also, it's possible that there may already be a pmt.rb executable running on the desired host, blocking the launch of a new one due to a port conflict, in which case you should log onto the host (assuming you're not already on it), and run 
514 1 John Freeman
<pre>
515 1 John Freeman
ps aux | grep -v grep | grep pmt.rb 
516 51 John Freeman
</pre>
517 84 John Freeman
to see if this is the case. If it's not and you can't think of what might be wrong (is the configuration manager running? have you double-checked the DAQInterface configuration file?), then try increasing the debug level in the DAQInterface configuration file for your next run-through, as this will likely shed light on the nature of the problem.
518 77 John Freeman
519 77 John Freeman
h3. *Regardless of how high the debug level is set to, you don't see any output to screen when you issue transitions to DAQInterface*
520 1 John Freeman
521 79 John Freeman
Chances are that DAQInterface was started in another terminal, and consequently, it's in that terminal where output will appear. This issue can be circumvented by redirecting DAQInterface output into a file; how this can be accomplished is described elsewhere in this document.