[Users] question about scif0 virtual adapter

Fedele Stabile fedele.stabile at fis.unical.it
Tue Mar 7 05:15:50 PST 2017


Good morning to all,
I have noticed this problem on my installation of 
OFED:
as written in the subject I have a virtual adapter scif0 and a physical
adapter qib0
# ibv_devinfo
hca_id:	scif0
	transport:			iWARP (1)
	fw_ver:				0.0.1
	node_guid:			4c79:baff:fe66:054b
	sys_image_guid:			4c79:baff:fe66:054b
	vendor_id:			0x8086
	vendor_part_id:			0
	hw_ver:				0x1
	phys_port_cnt:			1
		port:	1
			state:			PORT_ACTIVE (4)
			max_mtu:		4096 (5)
			active_mtu:		4096 (5)
			sm_lid:			1
			port_lid:		1000
			port_lmc:		0x00
			link_layer:		Ethernet

hca_id:	qib0
	transport:			InfiniBand (0)
	fw_ver:				0.0.0
	node_guid:			0011:7500:006f:7cdc
	sys_image_guid:			0011:7500:006f:7cdc
	vendor_id:			0x1175
	vendor_part_id:			29474
	hw_ver:				0x2
	board_id:			InfiniPath_QLE7340
	phys_port_cnt:			1
		port:	1
			state:			PORT_ACTIVE (4)
			max_mtu:		4096 (5)
			active_mtu:		2048 (4)
			sm_lid:			1
			port_lid:		28
			port_lmc:		0x00
			link_layer:		InfiniBand

And if I make a ib_read_bw test for RDMA connectivity with another
server in the cluster, I have this error:
 # ib_read_bw server_B
---------------------------------------------------------------------
------------------
Device not recognized to implement inline feature. Disabling it
---------------------------------------------------------------------
------------------
                    RDMA_Read BW Test
 Dual-port       : OFF		Device         : scif0
 Number of qps   : 1		Transport type : IW
 Connection type : RC		Using SRQ      : OFF
 TX depth        : 128
 CQ Moderation   : 100
 Mtu             : 4096[B]
 Link type       : Ethernet
 Gid index       : 0
 Outstand reads  : 255
 rdma_cm QPs	 : OFF
 Data ex. method : Ethernet
---------------------------------------------------------------------
------------------
 local address: LID 0x3e8 QPN 0x0003 PSN 0x29240f OUT 0xff RKey
0x000002 VAddr 0x002b227fdd9000
 GID: 76:121:186:102:05:75:00:00:00:00:00:00:00:00:00:00
 remote address: LID 0x3e8 QPN 0x0003 PSN 0x77e94b OUT 0xff RKey
0x000002 VAddr 0x002ae52147a000
 GID: 76:121:186:102:05:51:00:00:00:00:00:00:00:00:00:00
Failed to modify QP 3 to RTR
 Unable to Connect the HCA's through the link

Of course all works well if I specify the device qib0

Can you help me to understand if this is an error?

Fedele





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