Chelsio Communications Chelsio T5 Guide de l'utilisateur télécharger pdf (Page 90)

100

101

Chapter V. WD-UDP

Chelsio T5/T4 Unified Wire For Linux Page 90

To preload libcxb4_sock and load the config file, use the LD_PRELOAD environment variable

along with the config file when starting your application:

[root@host]# CXGB4_SOCK_CFG=<path to config file>

LD_PRELOAD=libcxgb4_sock.so <pathto>/your_application

4.1.4. Example with hpcbench/udp

The udp benchmark from the hpcbench suite can be used to show the benefits of

libcxgb4_sock. The hpcbench suite can be found at:

Source: http://hpcbench.sourceforge.net/index.html

Sample: http://hpcbench.sourceforge.net/udp.html

The nodes in this example, r9 and r10, have T5/T4 eth1 configured and the ports are connected

point-to-point.

[root@r9 ~]# ifconfig eth1|grep inet

inet addr:192.168.2.111 Bcast:192.168.2.255 Mask:255.255.255.0

inet6 addr: fe80::7:4300:104:465a/64 Scope:Link

[root@r9 ~]#

[root@r10 ~]# ifconfig eth1|grep inet

inet addr:192.168.2.112 Bcast:192.168.2.255 Mask:255.255.255.0

inet6 addr: fe80::7:4300:104:456a/64 Scope:Link

[root@r10 ~]#

For this benchmark, we need a simple “accelerate all” configuration on both nodes:

[root@r9 ~]# cat /etc/libcxgb4_sock.conf

endpoint {interface=eth1 port=0}

[root@r9 ~]#

[root@r10 ~]# cat /etc/libcxgb4_sock.conf

endpoint {interface=eth1 port=0}

[root@r10 ~]#

On R10, we run udpserver on port 9000 without libcxgb4_sock preloaded, and on port 90001

with preload:

1 2 ... 85 86 87 88 89 90 91 92 93 94 95 ... 451 452

Commentaires sur ces manuels

Pas de commentaire

Chelsio Communications Chelsio T5 Guide de l'utilisateur Page 90

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Chelsio Communications Chelsio T5