All Questions

This is related to this question. Basically, I need to add many fractions together. Seems simple enough? Except it isn't simple. I can't use fractions.Fraction class, that thing stupidly does fraction ...

I am working on a C-UDF for Postgres, where i would like to somehow read from a passed Typed-Tuplestore in parallel. Either pthreads or worker-processes is fine, as long as the access isn't combined ...

So I have an algorithm that gets a set of objects and computes a next set of objects. The code below is a toy version of the real code for brevity. The next snip illustrates the theme of the program ...

I have a little parallelizing question. I want to implement a trait function for A, below, which iterates over its Vec<B> field, and for each elements looks for all the following elements, and ...

I am trying to understand the difference in Dask between scatter(x, broadcast=True) and replicate(x). Both seem to provide a way to ensure copies of data is available in all nodes. Are they actually ...

I’m using MongoDB transactions with Mongoose, and I noticed a warning in the official docs that confused me regarding concurrency. According to docs for ClientSession.startTransaction(): IMPORTANT: ...

Can this syntactic augmented parallel code be compiled and run also for machines without parallel computing facilities without any modification, except that, obviously, the equivalent sequential code ...

I need to launch a Python script lots of times from a Python script. Suppose I have a machine with 10 cores and I need to run my script 100 times, so I could divide the total in 10 chunks of 10 ...

I am using Dask for some processing. The client starts successfully, but I am seeing zero workers. This is how I am creating the client: client = Client("tls://localhost:xxxx") This is the ...

using System.Diagnostics; const int TASKS = 100; var mainSw = Stopwatch.StartNew(); var tasks = Enumerable.Range(0, TASKS).Select(i => Task.Run(async () => { await Task.Delay(...

I need to process a list of objects (not the same shown on the sample), which I thought could be greatly improved by running it in parallel.foreach loop. However, the result is not what I expected. ...

I need to trigger a dynamic number of sub-workflows in parallel (around 100) and wait for ALL of them to complete before continuing the main workflow. I’ve implemented a solution but I’m wondering if ...

I am working on a global PDE problem that is solved using a standard domain-decomposition strategy (e.g., Scotch, METIS). This part of the computation is well balanced across all MPI processes. ...

The idea of Persistent-Memory gawk is fabulous because it improves the performance, size, and clarity of many scripts on static and reference data. However, I have a significant problem in adopting ...

I'm trying to run calculations using multiple cores in Python on multiple platforms (Linux, macOS, Windows). I need to pass a large CustomClass Object and a dict (both readonly) to all workers. So far ...