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    @stdlib/os-num-cpus
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    0.0.7 • Public • Published

    Number of CPUs

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    Number of CPUs.

    Installation

    npm install @stdlib/os-num-cpus

    Usage

    var NUM_CPUS = require( '@stdlib/os-num-cpus' );

    NUM_CPUS

    Number of CPUs.

    var n = NUM_CPUS;
    // returns <number>

    Notes

    • In a web browser, the number of CPUs is determined by querying the hardware concurrency API.
    • Otherwise, the number of CPUs is determined via the os module.

    Examples

    var proc = require( 'process' );
    var cluster = require( 'cluster' );
    var NUM_CPUS = require( '@stdlib/os-num-cpus' );
    
    var i;
    
    function onTimeout() {
        proc.exit( 0 );
    }
    
    if ( cluster.isMaster ) {
        for ( i = 0; i < NUM_CPUS; i++ ) {
            cluster.fork();
        }
    } else {
        console.log( 'Worker %s. Process id: %d.', cluster.worker.id, cluster.worker.process.pid );
    
        setTimeout( onTimeout, 1000 );
    }

    CLI

    Installation

    To use the module as a general utility, install the module globally

    npm install -g @stdlib/os-num-cpus

    Usage

    Usage: num-cpus [options]
    
    Options:
    
      -h,    --help                Print this message.
      -V,    --version             Print the package version.
    

    Examples

    $ num-cpus
    <number>

    Notice

    This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

    For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

    Community

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    License

    See LICENSE.

    Copyright

    Copyright © 2016-2021. The Stdlib Authors.

    Install

    npm i @stdlib/os-num-cpus

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    11

    Version

    0.0.7

    License

    Apache-2.0

    Unpacked Size

    38.1 kB

    Total Files

    14

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser