logo
down
shadow

MULTITHREADING QUESTIONS

groovy multithreading
groovy multithreading
will be helpful for those in need I would take a look at the Groovy Parallel Systems library. In particular I think that the Parallel collections section would be useful. Looking at the docs, I believe that collectParallel is a direct drop-in replace
TAG : multithreading
Date : November 23 2020, 07:00 PM , By : Ktk
Is Work Stealing always the most appropriate user-level thread scheduling algorithm?
Is Work Stealing always the most appropriate user-level thread scheduling algorithm?
To fix the issue you can do I'd distribute the tasks upfront. With the information of their estimated running time you can distribute them into individual queues, for each thread one.Distributing the tasks is basically the knapsack problem, each queu
TAG : multithreading
Date : November 22 2020, 07:01 PM , By : tdstein
Is the FPU control word setting per-thread or per-process?
Is the FPU control word setting per-thread or per-process?
I hope this helps you . It is per-thread on Windows. Not sure about OS-X, surely it does. Beware the nastiness you can run into if you are using libraries that expect the control word to be set at the default. Almost all of them do.
TAG : multithreading
Date : November 17 2020, 07:01 PM , By : Alex_Al
Clojure best way to achieve multiple threads?
Clojure best way to achieve multiple threads?
I wish did fix the issue. I am working on a MUD client written in Clojure. Right now, I need two different threads. One which receives input from the user and sends it out to the MUD (via a simple Socket), and one that reads and displays output from
TAG : multithreading
Date : November 16 2020, 07:01 PM , By : user3860387
Java fatal error, don't know what it means
Java fatal error, don't know what it means
wish help you to fix your issue It happens at the same place in my code (albeit not the first time the method is executed) but I can't make head or tail of what is wrong. (Doubly so as it's code for a robot). , The following error:
TAG : multithreading
Date : November 07 2020, 07:01 PM , By : user299460
How to run background task in Outlook 2007 add-in efficiently?
How to run background task in Outlook 2007 add-in efficiently?
I hope this helps . Running background threads in out are not recomended, it can be done but it depends on what you are actualy doing in your code, The OOM is run in a single threaded apartment COM server, so every COM call is executed on the main th
TAG : multithreading
Date : November 02 2020, 07:01 PM , By : Flip-Flop
what happen to the spawned process if the module who spawns it dies?
what happen to the spawned process if the module who spawns it dies?
Does that help Modules don't go down. Processes do. Modules could be purged out from the memory if you have more then one new version loaded up and then all processes which run the old version will be killed but it is not what you asked. Modules don'
TAG : multithreading
Date : October 24 2020, 06:10 PM , By : Beatrice
How can I wrap this Powershell cmdlet into a timeout function?
How can I wrap this Powershell cmdlet into a timeout function?
this one helps. A couple things...Having a timeout doesn't necessitate async processing. You could have a sync process (like your example) that has a timeout.
TAG : multithreading
Date : October 20 2020, 06:10 AM , By : Rachid Ag
Is texture name unique in OpenGL?
Is texture name unique in OpenGL?
around this issue Texture object names are numbers that represent a specific texture. If you generate a texture object name, the system guarantees that it will uniquely identify that specific texture within that OpenGL context, until you delete the t
TAG : multithreading
Date : October 20 2020, 06:10 AM , By : cj881
no multithreading benefit with single core
no multithreading benefit with single core
I wish did fix the issue. I'm new to concurrrent programming and multithreading. I can understand the benefits of multithreading with multicore processors, but does those benefit exist on single core processor, , There are two primary benefits to mul
TAG : multithreading
Date : October 12 2020, 09:00 PM , By : EricW
Threads running inside a child process are not timing out as per the set alarm time
Threads running inside a child process are not timing out as per the set alarm time
I wish did fix the issue. The timing of alarm() is not guaranteed to have sub-second accuracy. The standard Time::HiRes module offers ualarm() and a re-implementation of alarm() in terms of ualarm() which may be closer to what you want. Solving your
TAG : multithreading
Date : October 12 2020, 07:00 PM , By : Er.Ajnish Rana
Vulkan - when do we need to use more than one logical device (when there is only one physical device)?
Vulkan - when do we need to use more than one logical device (when there is only one physical device)?
Does that help The concept of a logical device needs to be distinct from a physical device, because you need to be able to register extensions, features, queue counts, and other initialization-time constructs. You need to be able to ask what the phys
TAG : multithreading
Date : October 12 2020, 10:00 AM , By : Loemsry Chhorn
Questions about implementation of worker tasks controlled by single master task
Questions about implementation of worker tasks controlled by single master task
hope this fix your issue You are correct that the master task can call the Do_Work entry for each worker task. Similarly, the master task can call the Report_Result entry of all worker tasks. A simple way to accomplish this is to create a task type f
TAG : multithreading
Date : October 12 2020, 12:00 AM , By : Laurie
Why does false sharing in caches not lead to wrong results?
Why does false sharing in caches not lead to wrong results?
wish help you to fix your issue You should look into cache coherency protocols such as MESI and its extensions MOESI and MESIF. In these protocols, each cacheline is essentially a state machine, transitioning from one state to the next based on what
TAG : multithreading
Date : October 11 2020, 11:00 PM , By : Shafqat Mehmood
Moving files between S3 buckets in parallel
Moving files between S3 buckets in parallel
this one helps. If the two buckets are in different regions, you can use Amazon S3 Cross-Region Replication.If they are in the same region, the "fastest" way to get the objects copied is:
TAG : multithreading
Date : October 11 2020, 08:00 PM , By : Thiago Lopes
Optimally traverse a DAG with weighted vertices in parallel
Optimally traverse a DAG with weighted vertices in parallel
will be helpful for those in need You can model this problem as a job shop scheduling problem (flexible job shop problem in particular, where the machines are processors, and the jobs are slices of programs to be run).First, you have to modify a bit
TAG : multithreading
Date : October 11 2020, 09:00 AM , By : Mike Schmidt
How to reason the correctness of mutex composition?
How to reason the correctness of mutex composition?
I think the issue was by ths following , Running your code a bunch of times and hoping for some arbitrary interleaving to uncover a concurrency-related bug is not a great way to do things but it's useful for some initial testing. Otherwise, there are
TAG : multithreading
Date : October 11 2020, 06:00 AM , By : Arthur
Concurrent (multithreaded) program hangs unless I print something
Concurrent (multithreaded) program hangs unless I print something
should help you out Despite the text in your question, I recommend that you let watcher block. It is quite rare indeed to need non-blocking operations on MVars; usually wanting it is a sign you haven't quite internalized the "fork everything" mentali
TAG : multithreading
Date : October 10 2020, 10:00 AM , By : SKay
How can i use MVars to move paddles on my pingpong haskell game?
How can i use MVars to move paddles on my pingpong haskell game?
should help you out The way MVars work is that a value of type MVar Bool is an opaque "token" referencing a storage location for a Bool. You create such a token and read and modify the contents of its associated storage location using IO actions.The
TAG : multithreading
Date : October 10 2020, 09:00 AM , By : Dtran1127
Is there a way to make this text game in haskell using MVar?
Is there a way to make this text game in haskell using MVar?
I think the issue was by ths following , There are a number of problems with your code before it'll even compile: damageCalculation tries to use life as both an MVar Integer (i.e., a "token" for a storage location containing an Integer) and the Integ
TAG : multithreading
Date : October 10 2020, 04:00 AM , By : essig
Proper way to optimize multi-threading with WaitGroups and goroutines?
Proper way to optimize multi-threading with WaitGroups and goroutines?
should help you out I would not use a global sync.WaitGroup, it is hard to understand what is happening. Instead, just define it wherever you need.You are calling wg.Wait() inside the loop block. That is basically blocking the loop every iteration wa
TAG : multithreading
Date : October 09 2020, 09:00 PM , By : Trisha Michelle
How to safely access and modify an array while multithreading?
How to safely access and modify an array while multithreading?
I wish this help you Your locking approach is not thread safe and it will not protect your data.With multiple threads you have to consider that any particular thread execution can be interrupted at any time and that another thread can "jump" in and a
TAG : multithreading
Date : October 08 2020, 11:00 AM , By : Alex Cote
Does a web application built on Go's http package work as a single process using multiple threads to deal with incoming
Does a web application built on Go's http package work as a single process using multiple threads to deal with incoming
To fix the issue you can do Go applications typically use the net/http package to implement a web server. The documentation for that package says:
TAG : multithreading
Date : October 08 2020, 02:00 AM , By : Vishal Gautam
Multithreaded reading line by line a file in Crystal
Multithreaded reading line by line a file in Crystal
this will help As far as I understand C's Parallel correctly, it just implements concurrent (and eventually multithreaded) execution of a number of similar tasks. This is obviously possible in Crystal, even without multithreading. In the stdlib, HTTP
TAG : multithreading
Date : October 06 2020, 03:00 PM , By : NickChen
Is Kotlin `?.let` thread-safe?
Is Kotlin `?.let` thread-safe?
I wish this helpful for you a?.let { block() } is indeed equivalent to if (a != null) block().This also means that if a is a mutable variable, then:
TAG : multithreading
Date : October 06 2020, 02:00 PM , By : Thomas
How can I guarantee the order that objects are instantiated in Powershell?
How can I guarantee the order that objects are instantiated in Powershell?
wish of those help Oh boy, that's a lot of interesting questions, although I sense you may have been led astray by the fact that not all methods of measuring are equal - so let's go through them!
TAG : multithreading
Date : October 05 2020, 09:00 PM , By : Rangga Guntur W
Why does multithreaded execution not work when the subroutine is expensive?
Why does multithreaded execution not work when the subroutine is expensive?
fixed the issue. Will look into that further The first example is incomplete without actually spawning threads, so not sure what happened there.The key point here is that join is blocking, meaning it won't return until the underlying thread is comple
TAG : multithreading
Date : October 01 2020, 06:00 PM , By : S. Tinglong
How to compile OpenCL-programs on multiple cores?
How to compile OpenCL-programs on multiple cores?
Any of those help (I am surprised that the driver for your platform isn't already multithreaded. Are you sure you're calls are really parallel.)If you're still stuck, a wretched hack that might work for that extends the solution in your referenced qu
TAG : multithreading
Date : October 01 2020, 05:00 PM , By : wjy
Create two mutable references that are thread safe to a struct in Rust
Create two mutable references that are thread safe to a struct in Rust
around this issue I'm trying to create async Reader and Writer in tokio, these require Send, and must be thread safe. (does not seem to be a way to write single threaded tokio code that avoids mutexts) , Let's start by clearing a few things:
TAG : multithreading
Date : September 30 2020, 05:00 AM , By : jankaray
Difference between cancel and uninterruptibleCancel (from the Async library)
Difference between cancel and uninterruptibleCancel (from the Async library)
Hope that helps Under no masking, asynchronous exceptions can happen wherever. Under mask, asynchronous exceptions can only appear from interruptible actions (which are generally blocking). Under uninterruptibleMask, asynchronous exceptions are compl
TAG : multithreading
Date : September 29 2020, 11:00 PM , By : Joshatron121
XPages: implementing Java PubSub subscribe with a thread
XPages: implementing Java PubSub subscribe with a thread
should help you out I did something like this years ago. You can find a Pub/Sub example with Guava here: http://hasselba.ch/blog/?p=2158I am not sure what you are planning with the subscriber thread respectively what the benefit is for your idea.
TAG : multithreading
Date : September 29 2020, 04:00 PM , By : Birra CJ Son
( Delphi fmx ) Can you create UI controls in a background thread without blocking user interface
( Delphi fmx ) Can you create UI controls in a background thread without blocking user interface
wish of those help I'm wondering if it's possible to create UI elements , even a complete form, in a background thread ( "without using it of course" ) , and once it's done, make it available in main thread to be shown.
TAG : multithreading
Date : September 28 2020, 07:00 PM , By : Pedro Leandro
I am running a javafx program and I am getting an IllegalStateException in a situation where I would expect usual Thread
I am running a javafx program and I am getting an IllegalStateException in a situation where I would expect usual Thread
should help you out Updating active scene graph elements (such as label text) in your own threads has the potential to cause a race condition (please read and understand the Software section of the link) in the internal state of the JavaFX system. Th
TAG : multithreading
Date : September 28 2020, 05:00 PM , By : Hebert Brum
Multithreading vs Shared Memory
Multithreading vs Shared Memory
I think the issue was by ths following , General advise: Be able to measure improvements! Without that, you may tweak all you like based on advise off the internet but still don't get optimal performance. Effectively, I'm telling you not to trust me
TAG : multithreading
Date : September 28 2020, 01:00 PM , By : Sean
Concurrency issues while reading and writing data in loop in TCP client server
Concurrency issues while reading and writing data in loop in TCP client server
hope this fix your issue It isn't a concurrency issue. It's a networking issue.TCP is a stream protocol, as such, a single read() from a socket doesn't correspond to a single write() from the other side.
TAG : multithreading
Date : September 28 2020, 12:00 PM , By : Shawn Matthiessen
What's a calling thread?
What's a calling thread?
I wish this help you A calling thread is the thread that calls a method or the thread inside which a method is called. If thread1 calls method methodA (if methodA gets called from within thread1) then the calling thread of methodA is thread1. The lis
TAG : multithreading
Date : September 28 2020, 10:00 AM , By : PB22
Can I create widgets on a non-GUI thread, then send to the GUI?
Can I create widgets on a non-GUI thread, then send to the GUI?
will help you Your non-GUI "requests" shall know nothing about widgets.GUI and "requests" shall be as independent as possible. You cannot create widgets in a non-GUI thread, but you can create your own class that can update GUI widgets inside itself
TAG : multithreading
Date : September 28 2020, 07:00 AM , By : sonyx
Actor system with IPC and Threading
Actor system with IPC and Threading
seems to work fine This is indeed possible: as you say all the building blocks are there.Still, it doesn't seem to be a very good fit: when programming in the actor model, it is common create many actors, so actors should be 'cheap'. Unfortunately on
TAG : multithreading
Date : September 27 2020, 12:00 PM , By : EliasH
Why 'withContext' does not switch coroutines under 'runBlocking'?
Why 'withContext' does not switch coroutines under 'runBlocking'?
Hope that helps withContext does not actually run async, it merges the contexts.According to the Kotlin core docs:
TAG : multithreading
Date : September 27 2020, 10:00 AM , By : Guille
Stuck thread at popComponentFromEL(UIComponent.java:2084) causing high cpu usage
Stuck thread at popComponentFromEL(UIComponent.java:2084) causing high cpu usage
will be helpful for those in need I removed below code from UIComponent.java file and it seems to be working. Here is the code snippet:
TAG : multithreading
Date : September 27 2020, 07:00 AM , By : Ibrahim
Start-Job Error: The term <NAME> is not recognized as the name of a cmdlet, function, script file, or operable pro
Start-Job Error: The term <NAME> is not recognized as the name of a cmdlet, function, script file, or operable pro
this one helps. When you pass a scriptblock to Start-Job, it's no longer part of your scope; it cannot see the external definitions. You would need to nest it inside your function to be applicable:
TAG : multithreading
Date : September 27 2020, 03:00 AM , By : mohammad shajarian
Which concurrency models do multi-process/thread programming belong to?
Which concurrency models do multi-process/thread programming belong to?
To fix this issue Let me add I bit of thoughts:occam-pi is true-[PARALLEL] language well fit onto parallel InMos T-414 Transputer hardware ( actually a hardware network of Transputers ). Process-flow was based on the theory of lambda-calculus guarant
TAG : multithreading
Date : September 27 2020, 02:00 AM , By : sivaji
Why do weak memory models exist and how is their instruction order selected?
Why do weak memory models exist and how is their instruction order selected?
like below fixes the issue There is no global arbiter that would do any such thing. If there was, it would be as efficient to always do things in order.The only data available immediately is local. Each execution takes decision based on rapidly avail
TAG : multithreading
Date : September 26 2020, 11:00 PM , By : eoherrer
How can i improve low performance in parallel code in vanilla rust?
How can i improve low performance in parallel code in vanilla rust?
Hope this helps This is not a full or particularly nice answer, but only a few random things I noticed. Maybe it helps you:
TAG : multithreading
Date : September 26 2020, 06:00 AM , By : David Camec
Does multithreading increase CPU time?
Does multithreading increase CPU time?
wish helps you The CPU time is the time CPU spends executing instructions. This does not include wait times for I/O. If you have a single processor/core, then the wall time is CPU time plus I/O time.For multiple cores, CPU time is measured as the tot
TAG : multithreading
Date : September 26 2020, 04:00 AM , By : Kieran Ellis
Is this singleton implementation correct?
Is this singleton implementation correct?
hope this fix your issue This code is thread-safe. Indeed, you can remove the volatile and it will still be thread-safe.The myInstance variable is initialized when static initialization is triggered (if it hasn't already happened) by the first getIns
TAG : multithreading
Date : September 25 2020, 08:00 PM , By : Fernando Luna
Multi-threaded parallelism performance problem with Fibonacci sequence in Julia (1.3)
Multi-threaded parallelism performance problem with Fibonacci sequence in Julia (1.3)
This might help you Great question.This multithreaded implementation of the Fibonacci function is not faster than the single threaded version. That function was only shown in the blog post as a toy example of how the new threading capabilities work,
TAG : multithreading
Date : September 25 2020, 04:00 PM , By : Fiveeights
AMD SMT or Intel HT performance
AMD SMT or Intel HT performance
hope this fix your issue I think that varying the price of the processors depending on the availability of the SMT/HT technology is just a matter of marketing strategy.The hardware is probably the same in every case but the feature is disabled by the
TAG : multithreading
Date : September 25 2020, 03:00 PM , By : DevNow
Multi threading in OpenCl
Multi threading in OpenCl
To fix the issue you can do It is absolutely possible to pad input buffers to be round multiplies of the workgroup size you select for your kernel. However, it often isn't practical just because you need to have a algorithm which can naturally handle
TAG : multithreading
Date : September 25 2020, 01:00 PM , By : Ndagi Abubakar
Conway's game of life becomes slower after using multi-threads
Conway's game of life becomes slower after using multi-threads
like below fixes the issue Each worker thread tries to lock the mutex immediately upon starting, and never releases the lock until it's done. Since only one thread can hold the mutex at a time, only one thread can do work at a time.Here are two ways
TAG : multithreading
Date : September 23 2020, 05:00 PM , By : uxpablo
Thread without a process?
Thread without a process?
help you fix your problem Threads run code. So essentially, you are asking whether it is possible to run code without a process.The answer depends on where you want the code to run.
TAG : multithreading
Date : September 23 2020, 02:00 AM , By : Danny Hraje
RwLock in a thread::spawn doesn't release the lock
RwLock in a thread::spawn doesn't release the lock
hop of those help? the write access attempt is still blocking the main thread after the spawn thread has been executed and has released the RwLock
TAG : multithreading
Date : September 22 2020, 05:00 AM , By : Nuur
lock cmpxchg fails to execute threads in core order
lock cmpxchg fails to execute threads in core order
I hope this helps . The following 64-bit NASM code uses lock cmpxchg to take each core in core order, execute some code, then reset the core number variable using xchg so the next core can execute the code. The core number for each core is stored in
TAG : multithreading
Date : September 21 2020, 02:00 PM , By : Gary
How to read channel without waiting setting in another goroutine?
How to read channel without waiting setting in another goroutine?
To fix the issue you can do A demon is created which push all the messages from test channel to all other listening routines.
TAG : multithreading
Date : September 21 2020, 07:00 AM , By : Savi
C++ vector<thread*> push_back(): can't figure out incantation to create unnamed thread variables
C++ vector<thread*> push_back(): can't figure out incantation to create unnamed thread variables
fixed the issue. Will look into that further The only thing explicitly missing in your example code to make it compile is std::: https://godbolt.org/z/3gX_h2
TAG : multithreading
Date : September 17 2020, 04:00 PM , By : Leslie Knepp
how to pass structure to QT thread
how to pass structure to QT thread
may help you . I would suggest to do the following, because the declaration of thepnp_com_info pnp_data[rowCount];
TAG : multithreading
Date : September 14 2020, 10:00 AM , By : Zhou
How can multiple threads (that are waiting on a condition variable) acquire the relevant lock when condition_all() is ca
How can multiple threads (that are waiting on a condition variable) acquire the relevant lock when condition_all() is ca
it fixes the issue From theory, a waiting thread (let's say Thread_1) first acquires a mutex, then waits on the condition variable by calling wait(). The call to wait() immediately unlocks the mutex. When the other thread (let's say Thread_2) calls n
TAG : multithreading
Date : September 12 2020, 11:00 PM , By : Amey
Parallel For-Each vs Scatter Gather in mule
Parallel For-Each vs Scatter Gather in mule
I wish did fix the issue. Why not then use the VM module, break the collection into its individual records and push them to a VM queue? Then have another flow with a VM listener picking up the individual records (in parallel) and processing them. Her
TAG : multithreading
Date : September 04 2020, 09:00 PM , By : deepa
Can Spark/EMR read data from s3 multi-threaded
Can Spark/EMR read data from s3 multi-threaded
wish help you to fix your issue There are two parts to reading S3 data with Spark dataframes: Discovery (listing the objects on S3) Reading the S3 objects, including decompressing, etc.
TAG : multithreading
Date : August 26 2020, 08:00 PM , By : Jeffrey Peltzman
shadow
Privacy Policy - Terms - Contact Us © 35dp-dentalpractice.co.uk