loops clocked on multiple cores

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• delay in reading the data when you are using multiple loops clocked on target RT

  Hello

  I have five loops clocked on a target of RT and I communicate to and from the host vi. All the loops of the value of the different priorities however when all running at the same time I found windows vi take up to 1 minute before reading the data. Four disabling loops to fix the problem. It is possible to start the app right after start windows vi?

  Kind regards

  Solved the problem by disabling variable autodeploy

  Thank you

• Allocate multiple cores of the only host for CPU on a virtual machine

  Hello

  You don't know if it is possible, but could find is not online.

  An application on my virtual machine uses only a carrot and I want to accelerate.

  Add more cores on this virtual machine is meaningless, to that effect, I would like to allocate multiple cores of the host that will act as a single core on the virtual machine.

  Is this possible?

  Thank you

  Herman

  As already stated above, this is not possible, and you have two options:

  1 buy a new CPU with a clock higher;

  2. that your application works with multiple processors.

• While time loop clock pc

  Hi guys

  I have a code that uses a while (currently) loop to open a file and read from time to time (in its simplest form... and... the details are not German to this post)

  The requirements are now tight and the loop (While or Timed?) should play the file once every two minutes based on the computer's clock (accuracy is not too important, certainly not milliseconds)

  for example, time is 11:35... Read file

  time is 11:36... .. do nothing

  time is 11:37... read the file

  time is 11:38... do nothing

  etc.   etc.

  In simpler terms (if possible)... have the loop to execute code inside every two minutes with the coming of the pc clock time sequence.

  I watched call loops (but never used them) and they seem to be a possibility

  Then, someone could show me an example of how best to do so.

  Thanks for your help and best regards

  Ray

  You forgot to update both get into the shift register.

  

• Continually acquire analog input, internal clock, break, Multiple device

  I have a PXI chassis with 6 cards SMU-6363.  I want to acquire data on the channels of each SMU-6363 map continuous AI, using the internal clock for timing.  I need to use a trigger to pause reading of a DI on one of the cards SMU-6363 for a break and to reactivate the acquisition.  I came across this example: https://decibel.ni.com/content/docs/DOC-12256/ , but keep getting error-201019 DAQmx start task "trigger break is not supported in a task to more devices.  To configure the start of break in a multi-device configuration, you must use no more than one device per task and route manually clock in demand signals. »

  The problem is that the configuration of I is made during execution by the operator.  Sometimes they want to acquire data on one HERE through all 6 cards SMU-6363, sometimes they want to acquire data on each channel of AI through all 6 cards SMU-6363.  What makes the task definition until manually route clock signals between devices for each rather difficult task.

  Is there a simpler way to solve this problem?

  Set a task to output counter - something like this:

  

  Next, configure your task of analog input to use the sample clock output of the meter:

  

  Best regards

• Def sequence (table grapes) with loops, clocked by the relatively long software.

  Hello and apologies in advance I am an infrequent user of LabVIEW.

  Running on a VI to control a peristaltic pump and valve used to control some for a biosensor nanogap Microfluidic devices. I have the pump and the valve works manually (i.e., I adjust the values on the fly) but I am now trying to allow the user to define a sequence of steps that are then executed one after the other.

  User input: number, flow, duration of valve, pump direction (boolean).  Ideally the user can then run several different steps by adding more steps, so I thought of an indexed cluster array where each element represents a step?

  I would like the user to enter the time in minutes and seconds. The minimum will usually be 30 seconds and could be as long as an hour. I'm not sure of the best strategy for the timed loop, if I understand the use of the block 'waiting (ms)' can cause problems. I thought about getting a timestamp, a value added to it and the comparison? Are there any other suggestions?

  Any advice would be appreciated.

  I use an acquisition of data USB-6009.

  PS the VI LabVIEW is probably an education version, so may cause problems when opening?

  Just ask yourself how you should architect your code? Using a table of parameters of the step is an eay easy to do. And the wait is not necessarily a bad thing, it depends on your application and if you need the calendar to be exact in a certain way. You can use wait it until Mrs several place for synchronization.

  You can lookin to a State Machine architecture to make the best UI feature.

  The Computer of State Simple model that comes with LabVIEW is really the best way for new developers to become familiar with LabVIEW using a semi scalable architecture.

  Here is a large example of the works of a state machine:

  • States: Init, slowed down, exit, DoThing1, DoThing2, DoThing3
  • Each State contains code that could take some time. Ideally, not too long because this is how long your code might not meet.
  • The idle state contains a structure of event for all of the user interactions.
  • The front panel has a button that says "do the 1 thing.
  1. Loop iteration 0: Application starts, the first State is Init. Init State made the initialization stuff and tells the application to go to the idle state when finished.
  2. Iteration of the loop 1: request goes to the idle state. He's sitting there, waiting for the structure of the event.
  3. Time passes, and then the user presses the button 'do 1 thing ". There is no code or minimal code, within the occurrence of the event. The output of this state of the event tells the application to go to the State of DoThing1.
  4. Iteration of the loop 3: Application passes to the State of DoThing1. Here, there is code that does a few things. The output of DoThing1 State tells the application to return to the idle state.
  5. Iteration of the loop 4: Application goes to a State of rest where he waits again to the structure of the event.
  • Each State can tell the application to go to any State they want. You want to reset? Return to the Init State. You want to put an end to the program? Go to the exit State. You want each State to start another (such as a sequence)? Have DoThing1 out of DoThing2, which DoThing3, which outputs Idle.

  You can create a report that runs the cluster setting input and operates it. The risk with a long wait, is that the code will not be able to receive entries to user during this waiting period. So if you make a long wait, you can use a VI of elapsed time to check several times if the wait is over.

• SQL Server Express 2005 will support multiple cores on a single processor? How I put it so that it recognizes multiple cores?

  I have SQL Server Express 2005 installed, but it uses only 1 core to a dual core processor.  How can I change this?

  Select *.
  from sys.dm_os_sys_info

  Product 1 CPU_COUNT and 1 Hyperthread_ratio although we have 2 dual core processors on our server which is on the virtual computer.

  Thank you
  Ryan

  Hi Ryan,

  Your question is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for SQL server on TechNet. Please post your question in the Forums TechNet in SQL Server

• Using multiple cores in a fun XP

  I normally run Windows 7, but I use a Windows XP fun to start a reduction program.  The program has a parallelizer which runs on up to 4 cores, but the fun is to limit to one.  I have a processor i7 with 2 cores and 4 wires.  In my fun XP Task Manager shows that I'm running at 100% CPU usage, but in Windows 7 Task Manager shows that I'm running at 25% of CPU usage.  I would like to get full use of the CPU in my fun XP so I can run the program more quickly.  Does anyone have any advice on how to do that?

  Hi irich15,

  Your question is more complex than what is generally answered in the Microsoft Answers forums. It is better suited for the IT Pro TechNet public. Please ask your question in the following forum.

  Windows 7 IT Pro category

• How to use a FOR LOOP to create multiple forms?

  I use Adobe animate CC (formerly Flash Professional CC) and I am trying to adjust the following snippet so that it creates several rectangles:

  var form = createjs new. Form (new createjs. Graphics ().beginFill("#FF0000").drawRect (5,5,100,100));

  this.addChild (shape);

  I then set it and put it in a loop I thought work in the reproduction of the form. The following code creates only a rectangle well?

  for (i = 0; i < 10; i ++) {}

  var i is new createjs. Form (new createjs. Graphics ().beginFill("#FF0000").drawRect (5,5,30,30));

  this.addChild (i);

  Move so that they do not lie on the other

  This.x += 50;

  }

  I think that the problem is how you use your iterator variable. In your loop, at the first start, i is equal to 0, then you immediately replace 0 with an instance of the Shape class, which means when he tries to loop again, I is not less than 10. They can't, because it is now a shape, not a whole number.

  Try this inside the loop:

  newshape var = new createjs. Form (new createjs. Graphics ().beginFill("#FF0000").drawRect (5,5,30,30));

  newshape.x += 50;

  this.addChild (newshape);

• Loops of scripts multiple times for each a vm

  Hello

  Someone can correct me on the code below.

  foreach ($vCenterServer in ($DefaultVIServers)) {
  foreach($vm in (Get-View -Server $vCenterServer -ViewType VirtualMachine -Property Name,runtime.powerState,Guest.net,Runtime.Host,Guest.GuestFullName,
  Config.GuestFullName,Parent,ResourcePool,Config.Hardware.Device,Config.version,guest.toolsVersion,guest.toolsversionstatus)){
      $t = Get-View $vm.Parent -Property Name,Parent
      $path = $t.Name
      while($t.GetType().Name -eq "Folder"){
          $t = Get-View $t.Parent
          if($t.Name -ne "vm"){
              $path = $t.Name + "/" + $path
          }
      }
      $t = Get-View $vm.ResourcePool -Property Name,Parent
      while($t.getType().Name -eq "ResourcePool"){
          $t = Get-View $t.Parent -Property Name,Parent
      }
          if($t.GetType().Name -eq "ClusterComputeResource"){
          $cluster = $t.Name
          }
          else{
              $cluster = "I'm Single"
          }
      while($t.getType().Name -ne "Datacenter"){
          $t = Get-View $t.Parent -Property Name,Parent
      }
      $datacenter = $t.Name
      
      $vm.Config.Hardware.Device  | Select @{N="vcenter";E={$vCenterServer.Name}}, 
      @{N="VM";E={$vm.Name}},
      @{N='powerState';E={$vm.runtime.powerState}},
      @{N='IP';E={[string]::Join(',',($vm.Guest.Net | %{$_.IpAddress | where{$_.Split('.').Count -eq 4} | %{$_}}))}},
      @{N='VMHost';E={$script:esx = Get-View -Id $vm.Runtime.Host; $script:esx.name}},
      @{N='GuestOS';E={$vm.Guest.GuestFullName}},
      @{N='ConfiguredOS';E={$vm.Config.GuestFullName}},
      @{N="Folder";E={$path}},
      @{N="Cluster";E={$cluster}},
      @{N="Datacenter";E={$datacenter}},
      @{N="HW Version";E={$vm.Config.version}},
      @{N="Tools Status";E={$vm.guest.toolsversionstatus}},
      @{Name="ToolsVersion";E={$vm.guest.toolsVersion}}
      
   }           
   }
      
  

  Why you loop through the devices of all virtual machines in line 27?

  In fact the script does not use the properties of the device, so I think you could fall this loop

• Show multiple cores as a proc in the VM?

  So, I have a slight problem with how provisioning works of processors and I was wondering if there was a way around it.

  I have two processors four hearts and when I go to assign processors to a virtual machine, it shows each core separately. That's all fine and dandy, but I'm going to set up a SQL server server that has only a 1 proc license. If I give you 4 cores to this virtual machine, they all show that different processors, which SQL will be too happy.

  Is there a way to show 4 hearts as a single processor inside the virtual machine? I prefer not to give a single core to SQL.

  Thank you!

  See this link, it may be useful

  http://www.yellow-bricks.com/2009/06/04/per-processor-licenses-for-your-application/

• Revolution Analytics R - RxExec does not work on multiple cores when Random Forest model run.

  I have a model of analysis of the survival of random forests for learning and trying to run on Multicore Cluster using the revolution analytics company R 7.1.0 version.

  I used the code below

  Library (RevoScaleR)
  rxSetComputeContext (RxLocalParallel ())
  rxOptions (numCoresToUse = 5)

  And then execution of the RxExec to perform the function of random forests by using the randomForestSRC package.

  I could see 10% CPU utilization which is by default kernel 1.

  Am I missing something here? Must the randomForestSRC package be a parallel?

  This issue is beyond the scope of this site (for consumers) and to be sure, you get the best (and fastest) reply, we have to ask either on Technet (for IT Pro) or MSDN (for developers)
  http://social.technet.Microsoft.com/forums/en-us/home s/fr-U.S./Accueil
  http://social.msdn.Microsoft.com/Forum
  
  
  If you give us a link to the new thread we can point to some resources it

• LabVIEW RT time loops and logical cores

  The RT 1 stage indicates that you should only use a single timed loop for each CPU whose computer if you want that the loop to be deterministic. When you use a computer with processor containing multiple logical cores within a single processor, can you have a loop timed for all logical cores with them while being deterministic and guaranteed to run at the time?

  If we take the example of a processor like the Core i7 which has a processor but 4 'real' nuclei and an additional 4 via Hyperthreading...

  First, disable Hyperthreading because they don't are NOT actual carrots and won't benefit from the execution of RT.

  The other 4 hearts everything will work loops just as if they were 4 separate processors.

  I don't understand how you can have multiple processors, but one heart, it normally is the opposite, a single CPU (physical processor) to multiple cores (processing units) separate.  The terminology varies, however.

• Timed loop continues to turn after stop

  Only, I have seen this time, but thought I should ask about it.  After pressing the stop button, I was surprised that the diagnostic LED on the front panel of the main vi kept flashing.  With the performance highlighting ONE values showed that the timed loop was still running.  I checked the other 8 loops clocked subvis and they also ran. None of the methods Stop worked. Only stop LV and abandonment of the cRIO eliminated the problem.

  Run LV2014 SP1 on cRIO-9067 with dual-core ARM processor.  Windows 7 x 32.

  BTW: The function of the check LED VI scale does not work on this device.

  You must allow an order any to be able to stop your curls.  A simple global variable would work well here.

• Error during asynchronous script runing DIAdem of labview on dual core processor

  Need urgent help / advice here!

  A kernel works well... double heart generates error: error in (line: column 17,: 1): error opening object. The currently open object has no subobjects. Forgotten ObjClose?

  The main software built in labview for data acquisition and analysis generates a PDF report at the end of a test, using DIAdem. For this I use the tiara express vi in labview to generate a report of multi page, in which case I use for loop to go through an array of strings for each page. This loop has a registry change too. After each page I run a script to set a few parameters such as linear/log, start/end and line thickness using the DIAdem Connectivity Toolkit. See the script below:

  Call GraphObjOpen("2D-Axis1")
  Call GraphObjOpen ("2DXAxis8_1")
  D2AxisXDivMode = 'linear '.
  D2AxisXScaleType = "start/end of manual.
  D2AxisXBegin = 20
  D2AxisXEnd = 20000
  Call GraphObjClose ("2DXAxis8_1")

  Call GraphObjOpen ("2DYAxis8_1")
  D2AxisYDivMode = 'linear '.
  D2AxisYScaleType = "full automatic".
  D2AxisYBegin = 0
  D2AxisYEnd = 0
  Call GraphObjClose ("2DYAxis8_1")

  C = 1 to CurveNoMax
  If D2CurveObj (c) = "" then exit for ' c
  Call GraphObjOpen (D2CurveObj (c))
  D2CurveLineWidth = 0.75
  Call GraphObjClose (D2CurveObj (c))
  NEXT ' c

  Call GraphObjClose("2D-Axis1")

  There is also a screenshot of the vi: (script file is generated by the Dscript vi and saved on a disk. then the path is passed to the tiara script vi.)

  

  I think it is, after the first page of the report is complete to the second page tiara ALWAYS shows error as shown above. However, on my P4 laptop with single core (without hyperthreading) its works very WELL EVERY TIME with a given number of channels/pages of the report.

  My chain of thought is the ultra-fast dual core is something in parallel, so no waiting for page previous complete or complete his purpose of closing! However, in my loop for, I use a shift as before named register, certainly this kind of loop can be divided on multiple threads of carrots/parallel? because it must wait for the answer from the previous. ! ? ! ? Im running LV 8.6 on WinXP for this project and I don't even think treatment multicore for loops for is included in this version.

  The other thing is... This script allows to launch at the end on the dual core until I added the last part that uses a loop for to get all the lines of the chart to be the thinkness I need. What this loop for the guilty? Can I stop to run on multiple cores/threads? I read a post by saying that there is tiara 8 support multi core. This triggered my doubt

  As always, your comments are most appreciated

  AL

  Hi Al,.

  I have a theory, but only you can test.  In your screenshot of the VI, you have the Boolean value of entry for the tiara run with asynchronous Script.vi = TRUE.  My theory is that if you modify this boolean (and all others like him) asynchrous = FALSE, the error will not occur on the multicore computer.  The other thing you could try would be to consolidate all orders report that relate to a REPORT page in a single call to tiara ActiveX.  In the screenshot below, you have at least 2 distinct call of screw DIAdem, so it's at least 2 separate ActiveX calls for a REPORT sheet.

  Here's what I think is happening.  On a multi-core computer, there is the potential for different orders of LV ActiveX tiara to run on different hearts, which can lead to a problem of synchronization on the side of the tiara.  DIAdem 11.x and earlier works exclusively on 1 CPU, so incoming ActiveX controls should be properly sequenced by the tiara ActiveX task list.  Theoretically, tiara must serialize all incoming ActiveX controls (no matter which CPU processed them) in the order that they arrived at the Server ActiveX DIAdem.  The side sending, the execution of LabVIEW data flow should theoretically ensure that all ActiveX applications are sent in the correct order.  But it is theoretically possible that queue processing ActiveX of the operating system cannot send all the ActiveX controls to DIAdem in order that he receive them LabVIEW - IF YOU have SELECTED PROCESSING ASYNCHRONOUS.

  See if these clues help you,

  Brad Turpin

  Tiara Product Support Engineer
  National Instruments