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From: Thomas Monjalon <thomas@monjalon.net>
To: dev@dpdk.org
Cc: ferruh.yigit@intel.com, andrew.rybchenko@oktetlabs.ru,
	keesang.song@amd.com, anatoly.burakov@intel.com,
	david.marchand@redhat.com, bruce.richardson@intel.com,
	David Christensen <drc@linux.vnet.ibm.com>,
	dmitry.kozliuk@gmail.com, ruifeng.wang@arm.com
Subject: Re: [dpdk-dev] NUMA node/socket
Date: Sun, 04 Jul 2021 03:53:43 +0200	[thread overview]
Message-ID: <12700395.j6fn4b5UDm@thomas> (raw)
In-Reply-To: <2863796.yO5TXMfXnl@thomas>

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.



  reply	other threads:[~2021-07-04  1:53 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-04  1:38 Thomas Monjalon
2021-07-04  1:53 ` Thomas Monjalon [this message]
2021-07-04  8:27   ` Andrew Rybchenko
2021-07-04  9:28     ` Thomas Monjalon
2021-07-04 16:18       ` Stephen Hemminger
2021-07-04 16:27       ` Dmitry Kozlyuk

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