Question of operation sequence - order of execution of events

Similar Questions

• Order of execution

  Hi can I want to know the order of the functions in the diagram below. Although all the functions to receive data at the same time why the functions of top down when I see highlight execution?

  

  The answer to your question, is that the order of execution is "unknown", or "variable" or "unpredictable."  If you impose another system on it (like that LabVIEW uses to "highlight the execution"), another set of 'unknown rules' may also come into play.

  The principle of data flow said that examples like your run in parallel to the best of the ability of the system - on a multi-core multi-threaded CPU, they might actually run in parallel on separate nuclei.

  When teaching LabVIEW, I use an example where I create a parallel structure and ask students to predict the order of execution.  I ran the same code several times, and always the order of execution of the parallel lines varied.

• Control the order of execution of the init/release

  I have a small program that I write in LabView.  It has an API (one set of screws to wrapping the functions of the DLL to control a device).

  Other such programs in the Gayshop make liberal use of the structures of the sequence.  I understand that the sequence into LabVIEW structures are not usually recommended.  I am writing my program with the best style of LabVIEW (as far as I understand - I'm still a relative novice in LabVIEW).

  I found that I could wire together the error / mistake Terminal to create a data flow to control the order of execution and it works beautifully.

  However, there are some cases where it is not enough.

  Here is an example.  I hope that the answer to this will answer my other questions.  If this is not the case, perhaps that I'll post more.

  One of the first live I call is an Init function.  One of the last screw is the release function.

  The release function must be called at the end, after the rest of the program executed (in this case, it is after the user requests the stop).  It should be naturally at the end (or almost) of the error string in / out connections error (as it is currently).

  However, the error it receives, which will determine whether or not he will run, should be the output of Init.  Release should work even if something else has failed.

  I enclose a photo showing the problem, with most of the code snipped out (as exactly what is happening in the middle is not relevant).

  What is the elegant way to handle this in LabVIEW.  Is it really a deal for a structure of the sequence, or is there a way more pleasant or better?  How would you recommend handling?

  Thank you very much.

  BP

  I agree with what pincpanter said, more you will need to use the status of the function 'Init '.

  Note that you can ignore the error and make the merger within the Vi version if you wish.

  Steve

  

• Y at - it a State chart type or the flowchart describing the order of execution process model?

  One of my clients asked me this question...

  I have a problem with a change in the order of execution in TestStand 4.1.1.  [he has improved from 3.1 to 4.1.1]  It seems that ProcessModelPreStep runs earlier in 4.1.1 to 3.1.  This causes our model of error because some required variables have not been set when executing.  I wish that was a big flow chart or a diagram of the State for TestStand.  Maybe it is and I don't know where to look?

  The reminder that you describe is a reminder of engine and is independent of the process template.  There is a list of all actions and their order described in the TestStand reference manual in Chapter 3 of the section called "step Execution.  You will see the action 11 is a reminder of previous step motor.

  P. Allen

  NEITHER

• Order of execution in ApEx 4.2.1.00.08

  Hello!
  
  If I get before the Application header (with id = 5) level process and page before the header (with id = 5) process, which one will run first?
  
  Is there a relationship based on id or there is another logic? I would like to understand general order of execution in the same area without manual testing and debugging data in both processes?
  
  Demand Express 4.2.1.00.08-related issue.
  
  RG,
  Damir Vadas
  http://Damir-vadas.blogspot.com

  Damir Vadas wrote:

  If I get before the Application header (with id = 5) level process and page before the header (with id = 5) process, which one will run first?

  Is there a relationship based on id or there is another logic? I would like to understand general order of execution in the same area without manual testing and debugging data in both processes?

  If you mean by 'id' 'sequence' then Yes, it determines the order. The order may not correspond to the components with the same sequence, so the best practice is to be explicit and give them values of different sequence to give the desired order.

  Use utilities > events Page to see the order of the rendered component and treatment in the report generator.

• Order of execution model

  The States VS 2011 helps:

  ************************************

  
  

  Strap of model execution

  
  

  Each model run loop running a compiled template for. The number of loops execution model is determined by the number of models specified in system definition file. By iteration, the loop of each model is run performs the following tasks:

  • Reads the data sent by the primary control loop and maps those data to the inputs of the model.
  
  
  • Performs a single step of the model.
  
  
  • Reads the values of model output and sends this data to the primary control loop.

  **************************************

  Suppose that:

  • I have 3 models such as the output of each model is directed towards the entrance of the next model: model 1 model 2 > model 3
  
  
  • with channels correspondents mapping such as:
  
  

  Model1_output <---->Model2_input

  Model2_output <---->Model3_input

  • The order of execution is set to "parallel."
  
  
  • Decimation of model is set to 1 for all three.

  The three models will run within the same tick PCL "in parallel" in the context of loop PCL, while running in series in the time slot of ticks because of the way the channel map is defined?

  THX.

  L.

  Lol stream mapping does not determine the order of execution.  In parallel mode, the three models receive identical entries of the PCL.  These entries are based on the previous iteration of the system.  The outputs of the model of the iteration (N-1) update the PCL at the beginning of the iteration (N), and these updates are available as inputs of the model during the iteration (N).

  In your case:

  Check 1

  Write A for model 1, model 1 run and written was ' to PCL

  Tick 2

  Model 2 Gets A' starting from PCL, runs and writes A "to PCL

  Tick 3

  Model 3 Gets A "PCL, performs and writes A" ' to PCL

  If this is not desirable, you should put the standard models of the category of the order of execution under the Simulation models in System Explorer.  This makes the outputs of the model available on other models in the same iteration of the PCL.  Note, there is no output model available for the rest of the system until the next iteration of the PCL.

  

  Steve K

• question about stacked sequence

  Hello

  I have a question about stacked sequence.

  I have a stacked with 5 sequences sequence (0,..., 4). I would like to run these as this form

  0, 1, 2, 1, 3, 1, 4, 1 then again 0...

  I don't want to duplicate the section 1 because it contains many objects, variable... One possibility would be to out objects and then duplicate the sequence and use of shift registers, but I don't want to use because in 1, I have some graphs in real time to draw...

  Will there be another (easy) way to do this?

  Thanks for the ideas,

  Concerning

  Why use a stacked sequence?  What you want is a state machine something like this

• Order of execution in a composite application and double ampersand

  Hello
  
  I had a doubt as to the order of execution of a compound query. As a general rule, I read his right to the left, up and down.
  I understand that once the value has been substituted to the variable must be explicitly undefined and all queries are working well.
  
  
  I'm confused by running the example below.
  
  1. when I run this example below that I've been invited twice .
  I guess once the results and which is assigned a value & & who should himself search for new value
  
  Select the function
  employees join jobs (job_id) using
  where employee_id = & who
  Union
  Select the function
  of job_history join jobs (job_id) using
  where employee_id = & & who;
  
  
  2. here in the example below, the value is currently not invited only once .
  . Is the lowest first executed query and if so why? Is there a special case in which this happens?
  
  
  Select the function
  employees join jobs (job_id) using
  where employee_id = & & who
  Union
  Select the function
  of job_history join jobs (job_id) using
  where employee_id = & who;
  
  
  the example below works fine with a prompt for value. Performs one of the *'& &' work as a single & *.
  
  Select the function
  employees join jobs (job_id) using
  where employee_id = & & who
  Union
  Select the function
  of job_history join jobs (job_id) using
  where employee_id = & & who;
  
  
  
  Help, please
  Thank you
  Jayshree

  Hi, Mary,

  to_learn wrote:
  Hello

  I had a doubt as to the order of execution of a compound query. As a general rule, I read his right to the left, up and down.

  Enforcement order has nothing to do with this problem.
  The substitution variables are resolved by SQL * more as it analyzes your order. I think he analyzes in order as it appears in your script, or on the command line as you type. Turn on "SET CHECK" to verify this.
  After SQL * more analysis of the command has completed, it passes the command (with replaced by their values for substitution variables) for the back-end, which compiles, and then only, executes the statement.

  I understand that once the value has been substituted to the variable must be explicitly undefined and all queries are working well.

  I'm confused by running the example below.

  1. when I run this example below that I've been invited twice .
  I guess the results & who is assigned a value once & who should himself search for new value

  It's true.
  Before you run the command, & which is not defined.

  Select the function
  employees join jobs (job_id) using
  where employee_id = & which

  Since & that is not defined, SQL * Plus asks you to give a value to it.
  After the analysis of this line, & who is still undefined, because you used a single &.

  Union
  Select the function
  of job_history join jobs (job_id) using
  where employee_id = & &whom;

  Since & that is not defined, SQL * Plus asks you to give a value to it.
  After the analysis of this line, & which is defined, because you used a double &. (Use the command SET to verify this.)

  2. here in the example below, the value is currently not invited only once .
  . Is the lowest first executed query and if so why? Is there a special case in which this happens?

  Yes, once, before running the script, & is not defined yet.

  Select the function
  employees join jobs (job_id) using
  where employee_id = & who

  Since & that is not defined, SQL * Plus asks you to give a value to it.
  After the analysis of this line, & which is defined, because you used a double &.

  Union
  Select the function
  of job_history join jobs (job_id) using
  where employee_id = &whom;

  Since & that IS defined, SQL * Plus, do not stop and ask you to provide a value for it.

  the example below works fine with a prompt for value. Performs one of the *'& ' work as a single & *.

  Yes; but I don't think it's a very useful way to think about. In fact, two of them work as single & s one way or another.
  Once again, & which is not defined at this stage.

  Select the function
  employees join jobs (job_id) using
  where employee_id = & who

  Since & that is not defined, SQL * Plus asks you to give a value to it.
  After the analysis of this line, & which is defined, because you used a double &.
  Using a single & cause also stop and ask. If the variable is not set, SQL * more stops and you request a value, regardless of whether you have used a single & double or &.

  Union
  Select the function
  of job_history join jobs (job_id) using
  where employee_id = & &whom;

  Since & that set, SQL * Plus you do not give a value for it.
  Using a single & would also result in the same behavior. If the variable is already defined, SQL * Plus, do not stop and you ask a value; It uses the previously given value, regardless of if you have used a single & double or &.

• How to determine the order of execution of the structure of the event

  Hello world

  I have a structure of the event were it contains four events. All the four events a separate buttons to run. Here, three events generates a digital output, remains an event (Finder) should find the order of these three events. For example, three events namely A, B and C. I run events in the order B, C and has. The event finder should find the order of the events previously performed (B, C and A).

  Thanks in advance.

  
  

• FPGA reference questions between the station development and execution? 63195 error code

  I will do my best to describe the problem, I was see.  Note, I tried a few other messages that kind of touch on my problems, but they never seem to have a definitive solution.

  Background-

  I have 3 screws:

  VI 1) opens / runs the bitfile FPGA reference and stores the reference to a global file so that I can call the reference of other screws I need to do this as opposed to the opening of a new reference because I use the FPGA for digital communications and it adds about 100 ms to to open a new reference whenever I need to read/write in the target FPGA to host (100 ms are long in the) digital world!).  Some people use Shift Registers.  I finally called my whole army FPGA screws of TestStand to run a test automated, so it was easier to break up of my functions for open/close/read/write.

  VI 2) called the global reference of the file for FPGA, then going to a read/write node to change the settings of the target, then passes the reference out of the node back to the global reference of the file read/writable

  VI 3) calls close reference FPGA and the function is passed the global reference of the file.

  Question-

  I understand not why this method works fine when I run either of TestStand with station options defined for the development (not running) mode or when I open VI which calls these 3 screws individually in sequential order but IS NOT working when I try to run these screws individually (Run VI 1 - open-> write Ref to the global reference of the file-> Run VI 2 - read global file reference-> playback control function / writing-> error-63195) or when I have run in the same sequence TestStand but together with station for execution options.  Maybe I need to change the TestStand sequence to load all the modules at startup?

  Why the reference becomes lost when global failover between development and execution and why labview cannot drop keep the reference stored?  Is there a work around?

  Finally found a solution.  I do not understand why it is necessary during the reading of the FPGA and not what writing (in fact I do not understand why it worked at all) but I ended up changing the properties of the step in my TestStand sequence for the step calling my DTL_READ.vi to be properties-> Run Options-> Unload Option-> "Unload after executing the step.  That seemed to do the trick to get my test TestStand sequence to work in runtime.

  I still don't understand why this was not required when you run the same sequence in the design environment and why it is not when I call my DTL_WRITE.vi.

  The DTL_READ.vi and the DTL_WRITE.vi pass the parameter labveiw global.vi 'Reference FPGA VI"of a node in read/write.  I don't know if the root of the problem is in my host TestStand and LabView FPGA VI...

  Thanks for all suggestions from you guys!  I'm happy I work but I am still confused by the solution.

• Question about Oracle sequences

  Please let me know if this question is not the subject of this forum and advise which forum I should post it. Thank you.
  
  We have a database 10g running on the AIX servers. A process of data loading was recently, and the development team is of the opinion that the question can be corrupted in the database sequence. This sequence is used to generate a unique primary key for writing in a table.
  
  Are there problems with 10g about the objects sequence database becomes corrupted? If so, is there a Metalink note published on a fix?
  
  Thank you all for a light on this topic.

  Hello

  Interview the max value of your column of tabale, in order to know the populeted of the maximum value of the sequence, compare it your currval in the sequence, and the maximum value for the column. If the values are not the same and the currval is lower than the max value, you will probably have the constraint violation, then increment the value of your sequence curr.

  Concerning

• Order of execution in one step

  I'm relatively new to TestStand, and I am trying to debug a problem with a file of sequence.

  I have a stage, which is a .NET adapter (not sure if it's perhaps relevant).

  In these properties in a loop has been activated, and a post term has also been defined.

  The term post will run at the end of each iteration of the loop or just once, after that the loop has repeated 5 times?

  Thanks in advance.

  Andy

  Look in the TestStand reference manual in Chapter 3 in respect of the execution of the step.  It should be pretty clear.

  Start > all programs > National Instruments > TestStand > Documentation > manuals > NI TestStand Reference Manual

• Order of execution for explicit file dialog boxes and query the user input dialogue

  Hello

  In my VI I use 1 and 2 express file dialog boxes prompt the user for input dialogue box. Y at - it any easy way to determine an order of exuction for these express dialog boxes? Or I have to use screws to notify?

  In fact, I just need the input of fo dialogue to prompt the user to be the first.

  Thanks for the tips!

  Martin

  Like most of the functions, the flow of execution can be set by plugging the error / mistake on clusters.

• Creating a search through OMB operator * most orders

  Hello. I use OWB 11.2.0.2 (MP3) on Oracle 11.2.0.2.
  
  I have trouble finding all the names property of a search operator. In particular, I have to add to multiple_match_rows;
  -Select the row
  -first row
  -order of column_name/desc
  
  Does anyone have an example or at least the list of property names?
  
  Thank you.

  Hello

  These 2 properties are on the SEARCH (s) of exit operator group. So you have to name the Group (whatever his name is, I used the OUTGRP1 below);
  MAPPING of the OMBALTER "$mapName" CHANGES in GROUP 'OUTGRP1' OPERATOR 'LKP_CD_M_PER' SET PROPERTIES (ROW_POSITION) VALUES ('FIRST_ROW')

  Can you do the CREATE_NO_MATCH_ROW on the group, the doc said OMB also is on the group, and looking how the user interface, it seems that it should be there.

  See you soon
  David

• Newbie question - alternating scenes in order using an audio track?

  Hello

  I filmed a musical school on 2 different nights.  Stage left the opening night and just Stadium last night.  All I want to do is use left step my main video and the audio track, then switch right of the stage sequences as needed.

  Left of the scene is clearly the best audio track because I was closer to the piano.  However, at certain times, right Stadium has a better POV through the action onstage, accessories, etc.  They slightly sped through the night last too so I have a few audio challenges of synchronization when using the images on the right of the scene.

  Anyway, here's where I am lost.  What is a cam multi task?  Or use the video 1 & video 2 track, if so, how?  Or should I cut the left and right of the stage scene scenes independent and mount it on 1 video all in order?

  I am without PP6 terminology to locate this answer in the help section, but learned some other great things by looking at .  I have CS6 and am a former loser of Pinnacle Studio, uh, I mean the user.

  Please tell me the commands/functions, I need to learn this task.  Thanks in advance for your help.

  JM

  Oh, I tried that.  Definitely * not * a multicam project (except if you really want to tear your hair out!).

  Because the timing is different on the two nights I recommend the implementation of these two shows in their own distinct sequences.  Stage left will be your primary, finished, sequence and allows you to define the right of the stage video and audio to be on track 2 (you'll need audio for reference and you will sometimes even use it).

  Through the performance of the stage left and split the video to any points you * know * you'll want to use another camera angle.  Start with the scenes of 'must-use' and then go to the scenes 'like to use' - you will need to practice!

  Disable clips of the scene left you use (or drop the opacity to 0%).  You should leave them in place, however, for reference.  Find the corresponding scene on the sequence of the scene to the right.  Cut it out and paste it on track 2 of the same scene in the sequence of the scene to the left (bring audio along for the ride too).

  Here's where the magic 'edition' (read: crazy) is available in.  Finessse the entry points and each camera (you'll end up setting two of them) until you like the cut.  Sometimes, the clip of the scene right will be longer than the same scene on the camera of the scene to the left.  Sometimes, it will be shorter.  Cut your master timeline as needed; If the new right scene is longer, just lop off the stage from stage left.  If it is shorter, leave a space or drag the hidden a little scene.  The idea is to keep as "synchronized" as possible to the end.

  You'll quickly learn when you can (and I can't) cut the songs!  Depends on your individual sellers, but will quickly become apparent.  You will also notice small (sometimes not so subtle) changes in costume, hair and makeup, not to mention the value of decoration and lighting.  You can sometimes get around these.  Sometimes you have to sacrifice your change to hide.  If you're very, very lucky you will have turned in very high HD.  If so, feel free to re-align your shots (i.e., zoom or pan).  Out and then put it on a standard def DVD and it will look wonderful!

  Oh Yes... Another thing... the * next * time for that (and if you do successfully this time * will * be a next time!), turn in high definition and beg, borrow or steal a second camera.  Set the second on the back of the House (or somewhere, he can see the whole show).  Then, you can be free to actually follow the action with your primary camera knowing that there is an 'insurance' static shot that you will be able to synchronize to the top.  * Who * will be a multicam edition!