Nothing Particularly Magnificent

    parallel-map

    0.0.1 • Public • Published

    Build Status

    Parallel Map

    A map function that runs on all of your CPU cores, for Node.js.

    This is meant to be used with synchronous, CPU intensive function to be mapped on large arrays. parallel-map will split the load across all available CPUs.

    Install

    $ npm install --save parallel-map

    Usage

    parallel-map is asynchronous and returns a Promise. The use of forked processes necessitates that the called function resides in its own file, which should be a Node module that exports a single function.

    main.js:

    var parallelMap = require('parallel-map');
    var path = require('path');
     
    parallelMap([1, 2, 3, 4, 5], path.join(__dirname, 'function.js'))
      .then((results) => {
        console.log(results);
        // [1, 4, 9, 16, 25]
      });

    function.js:

    module.exports = function (x) {
      return x * x;
    }

    Note that there is an overhead to forking multiple processes to have them run in parallel, so there will only be a performance gain when the function to execute requires a lot of CPU time.

    Keywords

    none

    Install

    npm i parallel-map

    DownloadsWeekly Downloads

    3

    Version

    0.0.1

    License

    ISC

    Last publish

    Collaborators

    • benjamintd