package main

import (
    "log"
    "os/exec"
    "runtime"
)

func runner(i int) {
    c := 0
    for {
        c++
        cmd := exec.Command("true")
        err := cmd.Run()
        if err != nil {
            log.Fatal(i, c, err)
        }
        if c%1000000 == 0 {
            log.Println("runner", i, c)
        }
    }
}

func main() {
    n := runtime.NumCPU()
    _ = runtime.GOMAXPROCS(n)

    log.Println("Found", n, "CPUs, spawning go routines")
    for i := 0; i < n; i++ {
        go runner(i)
    }
    select {}
}