[openib-general] QoS configuration using opensm

[Adit Ranadive]

Hi,

Im trying to establish some QoS parameters for allowing apps to
communicate using different service levels.

Curently my opensm.opts looks like this:

# QoS default options
qos_max_vls 15
qos_high_limit 0
qos_vlarb_high 0:4,1:0,2:0,3:0,4:0,5:0,6:0,7:255,8:0,9:0,10:0,11:0,12:0,13:0,14:0
qos_vlarb_low 0:4,1:100,2:100,3:100,4:100,5:100,6:100,7:100,8:100,9:100,10:100,11:100,12:100,13:4,14:4
qos_sl2vl 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7

# QoS CA options
qos_ca_max_vls 15
qos_ca_high_limit 0
qos_ca_vlarb_high
0:4,1:0,2:0,3:0,4:0,5:0,6:0,7:0,8:0,9:0,10:0,11:0,12:0,13:0,14:0
qos_ca_vlarb_low
0:4,1:4,2:4,3:4,4:4,5:4,6:4,7:4,8:4,9:4,10:4,11:4,12:4,13:4,14:4
qos_ca_sl2vl 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,7

Im not sure which options to modify QoS default or QoS CA? Should both
tables have same values?
My setup includes no switch and back two machines connected to each
other using the IB cable.

Since im mapping service level 7 to all VLs all apps using sl=7 should
receive equal bandwidth? Also since in VLarb_high table weight of SL=7
is 255?

Thanks,
Regards,
Adit