[dpdk-dev] NUMA node/socket

[Thomas Monjalon]

04/07/2021 03:38, Thomas Monjalon:
> There are some mix between NUMA node and socket IDs in DPDK.
> Examples:
> 	* rte_eth_dev_socket_id() returns the NUMA node.
> 	* rte_malloc use sockets to allocate the memory
> 
> Is it critical?

There is a function, implemented for Windows only,
which distinguishes clearly node and socket
but it assumes there is only 1 node per socket:

unsigned int
eal_socket_numa_node(unsigned int socket_id)
{
    return cpu_map.sockets[socket_id].node_id;
}

Reminder: AMD can be configured to have multiple nodes per socket.