numa architecture example

  • I tried to get a server working with numa architecture. Server Board with two xeon CPUs

    I want that all 48 cores and 96 Threads can be used by one programm.

    Can somebody give me please a minimal working example for this?

    Thanks in advance.

    I tried this:

    #include <stdio.h>
    #include "stdafx.h"
    int main(void)
        if (numa_available() < 0) {
            printf("System does not support NUMA API!\n");
        int n = numa_max_node();
        int size = 1024 * 1024;
        printf("There are %d nodes on your system\n", n + 1);
        void *mem = numa_alloc_onnode(size, n);
        if (mem == NULL) {
            printf("could not allocate memory on node %d!\n", n);
        numa_free(mem, size);
        if (numa_run_on_node(n) != 0) {
            printf("could not assign current thread to node %d!\n", n);
        return 0;

    But the numa functions are not available. example comes from this: gist file. But the .h file is missing.

  • Banned

    @holzfelix sagte in numa architecture example:

    #include "stdafx.h"

    Smells like 'Microsoft'. 🐱
    If you want to use NUMA with MS-C, look here:

    On Linux you have to install NUMA support first.
    For Ubuntu: apt-get install libnuma-dev

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