numa architecture example

[holzfelix]

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: https://gist.github.com/BloodyD/dc8c4283ac2bdae4322e gist file. But the .h file is missing.

[RBS2]

@holzfelix sagte in numa architecture example:

#include "stdafx.h"

Smells like 'Microsoft'.
If you want to use NUMA with MS-C, look here: https://docs.microsoft.com/en-us/windows/desktop/procthread/numa-support

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