QOS setup issue with opensm

Hello,

I'm running into trouble when trying to configure QoS on opensm 3.3.2. I tried several QoS setups, but unfortunately without any luck. Could someone please tell me what I'm doing wrong ?

The different combinations I tried are listed below:

###############################################################

qos-policy.conf:

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

Nov 24 09:26:01 065823 [96B5D910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf:

qos-ulps
default : 0 # default SL
ipoib, pkey 0x0001 : 4 # TCP tests over IB
end-qos-ulps

partitions.conf:

default=0x7fff,ipoib : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:21:43 526886 [C85A1910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x0001 in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

partitions.conf:

default=0x7fff : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:46:36 576946 [640C7910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

default=0x7fff : ALL=full;
backbone=0x0001,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:51:23 666860 [6EA6B910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

Did I make a mistake, or does that sound like an opensm bug ?

Thanks for your help,

Vincent

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Quoted 72 lines · Vincent Ficet

Hello,

I'm running into trouble when trying to configure QoS on opensm 3.3.2. I tried several QoS setups, but unfortunately without any luck. Could someone please tell me what I'm doing wrong ?

The different combinations I tried are listed below:

###############################################################

qos-policy.conf:

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

Nov 24 09:26:01 065823 [96B5D910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf:

qos-ulps
default : 0 # default SL
ipoib, pkey 0x0001 : 4 # TCP tests over IB
end-qos-ulps

partitions.conf:

default=0x7fff,ipoib : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:21:43 526886 [C85A1910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x0001 in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

partitions.conf:

default=0x7fff : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:46:36 576946 [640C7910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

default=0x7fff : ALL=full;
backbone=0x0001,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Quoted 7 lines

Nov 24 09:51:23 666860 [6EA6B910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

Did I make a mistake, or does that sound like an opensm bug ?

It's neither. It's an outcome of OSM being not very user friendly in QoS configuration :(

You're trying to assign a certain SL to IPoIB, so you define a partition with a certain pkey, and add a rule for this pkey in the QoS policy file. So far everything is OK.
The problem is that SL is part of partition's parameters, so when you defined the partition as follows:

default=0x7fff,ipoib : ALL=full;

you didn't specify SL, and SM used default SL for this partition. In short, it is as if you defined the partition as follows:

default=0x7fff,ipoib,sl=0 : ALL=full;

Now comes the QoS policy rule that says the following:

ipoib : 4 # TCP tests over IB

So you have a mismatch between SLs from partition configuration and QoS policy. SM is aware if this and uses SL from QoS policy to overwrite the one that is stored in the partition structure.

So bottom line - your configuration is correct.

-- Yevgeny

Quoted 10 lines

Thanks for your help,

Vincent

Signature · 3 lines

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Hello Yevgeny,

Quoted 100 lines

Quoted 72 lines · Vincent Ficet

Hello,

I'm running into trouble when trying to configure QoS on opensm 3.3.2. I tried several QoS setups, but unfortunately without any luck. Could someone please tell me what I'm doing wrong ?

The different combinations I tried are listed below:

###############################################################

qos-policy.conf:

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

Nov 24 09:26:01 065823 [96B5D910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf:

qos-ulps
default : 0 # default SL
ipoib, pkey 0x0001 : 4 # TCP tests over IB
end-qos-ulps

partitions.conf:

default=0x7fff,ipoib : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:21:43 526886 [C85A1910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x0001 in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

partitions.conf:

default=0x7fff : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Nov 24 09:46:36 576946 [640C7910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

qos-policy.conf

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

default=0x7fff : ALL=full;
backbone=0x0001,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

Quoted 7 lines

Nov 24 09:51:23 666860 [6EA6B910] 0x01 -> __qos_policy_validate_pkey:

ERR AC15: pkey 0x7FFF in match rule - overriding partition SL (0) with QoS Level SL (4)

###############################################################

Did I make a mistake, or does that sound like an opensm bug ?

It's neither. It's an outcome of OSM being not very user friendly in QoS configuration :(

You're trying to assign a certain SL to IPoIB, so you define a partition with a certain pkey, and add a rule for this pkey in the QoS policy file. So far everything is OK.
The problem is that SL is part of partition's parameters, so when you defined the partition as follows:

default=0x7fff,ipoib : ALL=full;

you didn't specify SL, and SM used default SL for this partition. In short, it is as if you defined the partition as follows:

default=0x7fff,ipoib,sl=0 : ALL=full;

Now comes the QoS policy rule that says the following:

Quoted 8 lines

ipoib : 4 # TCP tests over IB

So you have a mismatch between SLs from partition configuration and QoS policy. SM is aware if this and uses SL from QoS policy to overwrite the one that is stored in the partition structure.

So bottom line - your configuration is correct.

Just to make sure I understand correctly. What you are saying is that the following configuration (among the 4 alternatives I listed above) is correct, although opensm reports an error ?

partitions.conf:

default=0x7fff,ipoib : ALL=full;
backbone=0x0001,ipoib,defmember=full : 0x2c9000100d000679,
0x2c9000100d00056d;

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

Thanks for your help,

Vincent

Quoted 15 lines

-- Yevgeny

Quoted 10 lines

Thanks for your help,

Vincent

Signature · 3 lines

To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html

I don't know what exactly are you trying to do, so I don't know which option is the correct one. If you just want to have default IPoIB to use SL4, you can use the first option:

qos-ulps
default : 0 # default SL
ipoib : 4 # TCP tests over IB
end-qos-ulps

As you already noted, you will see the error message about SL mismatch in the OSM log. The reason for this is default partition configuration: if no partition file was provided, SM defines default IPoIB partition with default pkey, which is 0x7fff, and other default parameters, one of them is SL0.
So you get the SL mismatch again, but SM uses what you provided in the QoS policy as an SL with higher precedence and replaces the SL0 in the partition.