Questions tagged [scheduling]
Questions on managing computation or tasks order. Synchronizing parallel procedures, dynamics objects and so on. It's meant to be a secondary tag to narrow the scope of question already tagged with parallel, dynamic, evaluation and similar tags.
76
questions
1
vote
1answer
33 views
How to stop a task deployed to the cloud?
While trying to learn about cloud tasks, I evaluated
CloudDeploy[SessionSubmit[ScheduledTask[Print[Now], Quantity[1, "Minutes"]]]]
It is now printing the result ...
13
votes
1answer
167 views
Scheduled tasks and dynamic updating
Here is an example:
x = 0; Dynamic[x]
now please run:
SessionSubmit[x = 1; Pause[10];]
Problems:
Annoying one: ...
1
vote
1answer
43 views
Problem when using TrackedSymbols and UpdateInterval to refresh different expressions at different times inside Dynamic
While attempting to optimize my program, I noticed an issue with the Refresh expressions I am using inside a particular Dynamic[]. I will use a simplified example ...
5
votes
1answer
54 views
IntervalSlider and updating function specification
IntervalSlider seems to ignore Dynamic's second argument:
...
1
vote
1answer
128 views
Plot Serial data from Arduino with time date problem
My WM code reads Arduino data from three analog sensors. My code successfully captured the data from the buffer and add the date of capture using the Now[] function....
4
votes
1answer
77 views
Getting print messages into a custom user interface constructed via DynamicModule
I have not been able to find the answer for the following problem, and would be happy to be educated.
I am writing a custom user interface around some code that has lengthy calculations. In the ...
10
votes
1answer
100 views
SystemOpen from ScheduledTask
I could bet it used to work, now the following code fails 95% of times:
RunScheduledTask[Echo @ SystemOpen @ "https://www.wolfram.com", {1}]
Can you reproduce ...
4
votes
2answers
58 views
Updating/ disabling certain slider values dynamically in Manipulate
I am struggling with Manipulate dynamic updating. I would like to have an image containing two points which can both be moved in real time to any location on the ...
1
vote
1answer
58 views
MouseOver and Speak
I am having an issue where Mouseover doesn't work with Speak and instead returns Null. All ...
2
votes
2answers
91 views
ScheduledTask $timespec$ syntax
I want a task to run every five minutes from a specific start date to a specific end date.
Documentation states syntax should be:
{start, timespec, end}$\qquad$ run between dates start and end
<...
1
vote
2answers
114 views
Import files from a directory choose via Manipulate
I thought I write a super-simple program to import all (Excel)files from a directory a user can choose>
...
4
votes
1answer
135 views
My clock doesn't work
I have this code. When I click on the clock, my alarm don't activate and not work. I have tried with DynamicModule and nothing. I don't know where is the error.
<...
10
votes
0answers
117 views
'Visibility' of Dynamics in TabView with respect to SynchronousUpdating
Bug introduced in 11 or earlier and persisting through 12.0.0
CASE:4076464
Example 1
...
2
votes
1answer
54 views
Hold Evaluation in a MenuView or TabView
Suppose I wish to create a MenuView where the evaluation of the rules is time consuming.
How would I delay evaluation of the right-hand-side of the arguments to <...
3
votes
0answers
80 views
Too many scheduled tasks (with parallelization)
I have a program that makes many http requests (gathering data from APIs), and computes on that data. Speed is a priority and using the most up to date data in the computations is a priority. ...
1
vote
1answer
83 views
Call ParallelSubmit from inside a parallel kernel
I am scheduling myFun[x] to evaluate every couple of seconds in a parallel kernel with ParallelSubmit and Parallel`Developer`QueueRun[], where it sometimes triggers ...
16
votes
2answers
364 views
Scheduling Optimization
I asked this question here 2 years ago. I didn't know this website at that time. I just realized I could ask it here. Here is the problem statement.
Assume I have 20 trucks, $t_j$, $j=1...20$ and ...
0
votes
0answers
37 views
SQLConnection causes kernel hangs
This question is additional question to Maintaining SQLConnections In Mathematica 10.4.1.0 (64bit).
...
4
votes
0answers
80 views
ScheduledTask DateObject pattern to evaluate at same time everyday
I would like to create a ScheduledTask that evaluates at the same time everyday. Such as, evaluate function at 1:00 am everyday. The "Daily" timespec in ScheduledTask doesn't allow me to control the ...
1
vote
1answer
80 views
How to make Manipulate run automatically after evaluation?
How to make Manipulate run/play automatically after evaluation, i.e. without having to hit the play button (but still being able to use the pause/play button)?
<...
13
votes
1answer
210 views
Can I trust URLSubmit?
Bug introduced in 11.2 or earlier and persists through V12.0
[CASE:4026293] confirmed
Let's create 10 asynchronous requests which just check if the site is there.
...
8
votes
1answer
160 views
Dynamic triggered but renders the same content
Documentation bug introduced in V10 or eralier and persisting through V11.3
It is a documentation bug because the undocumented optimization method by FE makes major assumptions.
The example is not ...
9
votes
0answers
94 views
Possible bug in Refresh[x, None] on the very first x = val
Bug introduced in 8 or earlier and persisting through 11.3
[CASE:3995912]
From Refresh docs:
Refresh[expr,None] ...
7
votes
1answer
115 views
FinishDynamic[] does not wait for display to finish
Bug introduced in 10.4 or earlier and persists through V11.2
[CASE:3993499]
If your UI contains a couple of heavy/big elements, or one heavy and couple of slightly heavy, because delay ...
5
votes
0answers
67 views
Handling rendering delays gracefully
I moved the second issue to a separate topic: 162013
Please run the code sample
As you can see there is a delay between the moment the calculation is finished and when the graphics is shown. And ...
4
votes
1answer
101 views
LocalSubmit and package functions
I want to use LocalSubmit to create continuous tasks that run in parallel. But it not works with functions from packages. For example:
...
3
votes
1answer
49 views
Manipulate requires two evaluations after revision
This Manipulate program below allows the user to enter points on a LocatorPane and then draws a line through the points.
The <...
3
votes
1answer
115 views
Initializing Manipulate without grey bar
I have a relatively long code inside Manipulate that computes an output depending on controls. Computation takes about a second, so I am using ...
3
votes
1answer
70 views
SystemOpen inside a button waits until the end for being evaluated?
I am writting with the hope of getting some help when using "SystemOpen".
Here is a simple example:
...
1
vote
1answer
131 views
call function to trigger update to dynamic — what's the right way
I want to create a plot using Dynamic. Ideally, I'd have some persistent, locally scoped state variables living in a Module; as ...
1
vote
1answer
64 views
DateTime Input Dialog in Mathematica
I am trying to create a DateTime input dialog that will return a DateTimeObject
...
11
votes
1answer
153 views
Why is PaneSelector caching nested Dynamics and how to switch it off?
Bug introduced in V10.4 or earlier and persisting through V11.3
CASE:3875733, confirmed
It seems that Dynamic content is somehow cached by ...
7
votes
1answer
397 views
Remove cell from evaluation queue without aborting evaluation?
Let's say that I queue a number of cells in evaluation, and each is set to run something that will take a relatively long time to finish. I realize midway through the queue that one of the commands is ...
4
votes
1answer
141 views
Dynamic scheduled task doesn't work [duplicate]
I have a list variable that I want to append new values from a normal distribution to after I click a button. It works in a simple case but not for the more complicated situation and I don't know why.
...
3
votes
0answers
86 views
What is the Kernel waiting for after DialogInput is launched?
Bug introduced in 11.0 or earlier and persisting through 11.2
[...] I was able to reproduce the issue, and consequently, I filed a report with our development team [...]
CASE:3805351
I find ...
11
votes
3answers
244 views
CurrentValue and MousePosition do not respect Dynamic's options
Bug introduced in V10.4 or earlier and persists through V12.0
A support case with the identification [CASE:3726810] was created.
[...] It does appear as though ...
1
vote
0answers
55 views
RemoveScheduledTask has some problem in Mathematica 11
I am using Mathematica 11
below is an simple example of RunScheduledTask copied from documentation.
...
6
votes
3answers
137 views
How to create a window which will close in a certain amount of time?
I'm currently making an interface in Mathematica and I'll need to bump a window out and then let it close itself in a certain amount of time.
Here's an short example to illustrate the effect:
...
5
votes
1answer
270 views
switch between automatic and manual updating
I have a plot with interactive controls. I'd like to give the user the option between having the plot automatically update (when the plot's parameters are changed with the slider) and having the ...
6
votes
0answers
109 views
Finish(Asynchronous)Dynamic[]
I have a question deriving from a recent topic Synchronizing Dynamics with EventActions.
tl;dr;
How to authoritatively explain the influence of ...
8
votes
1answer
248 views
Cloud Deploying a Scheduled Task
cross-posted on the Wolfram Community forum
I am trying to deploy a ScheduledTask that monitors the state of a google spread sheet every hour. I want the object to ...
5
votes
1answer
142 views
Synchronizing code in Dynamics with other procedures
I have huge code and some problem. I don't know how to make example. I'm afraid I can't make good SMALL example to demonstrate you the problem. So I'll try to explain. Maybe somebody know about such ...
6
votes
1answer
211 views
Working with Dynamic: Synchronization with EventActions ( and other preemptive evaluations)
I would like to make a simple "game": Display a dialog with a random letter, if the same letter is pressed on the keyboard, the display changes into a string ...
2
votes
0answers
49 views
How to check if and when a ScheduledTask is scheduled?
Apparently, on Mathematica
$Version
"10.4.1 for Microsoft Windows (64-bit) (April 11, 2016)"
the functions ...
6
votes
2answers
134 views
Abort an EventHandler?
How do I stop an EventHandler? I'm trying to allow the user unlimited inputs on the arrow keys UNTIL certain conditions are met, and then stop the ...
5
votes
2answers
93 views
Creating a warning before executing a function if not cancelled?
How could I create a warning dialog that executes a function if not cancelled after a delay ? Also I would like the time remaining before execution to be displayed and the dialog to be non blocking.
10
votes
4answers
415 views
Working with DynamicModule: ScheduledTasks with local variables
I have a question - is it possible to run ScheduleTask[] inside DynamicModule[]?
What I have tried so far:
...
19
votes
2answers
2k views
How to restart computation when kernels die?
When an important process needs to be kept alive, there are monitoring tools to restart them if they die (e.g. god tasks in ruby), in my case I have an overnight scraping task that I need to have done ...
37
votes
4answers
965 views
What is the difference between Dynamic[x] and Dynamic[ h[x] ] for DynamicModule variables?
Bug introduced in 9.0 or earlier and persisting through 12.0
In 11.3 it is even worse. An example from the accepted answer with a Slider is now broken too:
...
1
vote
1answer
77 views
Showing updating message in Dynamic with UpdateInterval
I am creating an interface which needs to repeat an operation every few seconds. The operation itself is expensive but faster than the update interval of the interface.
I would like to have some ...
