Advertisements > library(parallel) > cluster = makeForkCluster(2) > cluster socket cluster with 2 nodes on host ‘localhost’ > rm(cluster) > .Platform$OS.type [1] "unix" This behavior is the same on a Ubuntu 22 box and on a Mac. How come I can’t create a fork cluster? >Solution : parallel::makeForkCluster() does setup forked parallel processes: > cluster… Read More makeForkCluster creates a socket cluster on Unix
Advertisements I have a api in which I need to post a request and write the response to individual txt files. Each post request needs to go with a MaterialID which I am reading from a list. The list can contain anything from 1000 to 5000 MaterialIDs I need a way to do multiple parallel… Read More multi-threaded foreach Api Post and write response to a folder
Advertisements I want to create two lists by running two functions (returning a value each for every run) in parallel. My code below works, but is still taking too much time. Is there a more efficient way to parallelize this code? import time from joblib import Parallel, delayed catchments = 50 #define number of catchments… Read More How to create lists by running functions in parallel in python
Advertisements I’m struggling to see how I could best implement a common concurrency pattern I use in c++. Pseudocode: void kernel(inputs, outputs, start, stride) { for (size_t i = start; i < length(inputs); i++) { outputs[i] = process(inputs[i]); } } void run(inputs, number_of_threads) { threads = [] vector outputs(length(inputs)) for (int i = 0; i… Read More Perfectly parallel problems in Rust
Advertisements I have a program and want to increase the runtime performance more. let a = 1; let b = 2; let c = a + b; let d = c + 2; let e = 3; let f = c + d; let g = a + e; Step 1: Because a, b and… Read More How can I programing multiple cores in C
Advertisements All of my database activities (PostgreSQL) are based on my own functions. For example, to submit verification request data, I use a function with some SELECT and INSERT operations. What is the correct PARALLEL label for this function? SAFE or UNSAFE? I think I have to use SAFE. I read if a function changes… Read More PARALLEL label for a function with SELECT and INSERT
Advertisements Please see the following Code:- Private Sub PictureBox1_Paint(sender As Object, e As PaintEventArgs) Handles PictureBox1.Paint Parallel.ForEach(Segments.OfType(Of Segment), Sub(segment) Try segment.DrawLine(e.Graphics) Catch ex As Exception End Try End Sub ) Parallel.ForEach(Ellipses.OfType(Of Ellipse), Sub(ellipse) Try ellipse.DrawEllipse(e.Graphics) Catch ex As Exception End Try End Sub ) End Sub Is it Possible to use only One ForEach loop… Read More Using Only One ForEach Loop
Advertisements I am fairly new to asynchronous programming; I am developing a program that deals with numbers in different bases and I want to make the addition method asynchronous. Firstly, it computes the linear convolution and does the carrying later, thus every iteration of the for-loop is independent (Example): (Little Endianness btw) [2,7,1] + [8,7,5]… Read More Adding two arrays asynchronously
Advertisements std::filesystem::directory_iterator is a LegacyInputIterator and apparently it can’t be used in a parallel std::for_each I can iterate through the directory_iterator, get the items, place them in a vector and use that vector for parallel iteration. Can the above step be omitted? Is there a way to iterate through a directory_iterator in parallel like this:… Read More How to iterate through a directory_iterator in parallel?