[openib-general] OpenSM Work Q2 2005

[Eitan Zahavi]

Hi All,

For your comments and information Mellanox plans to work on the following
new OpenSM feature and enhancements this quarter (and maybe next one):

	1.	PKey re-ordering - current implementation of PKey tables in
OpenSM "re-orders" the PKeys. This breaks any installation that uses PKeys.

	2.	Routing algorithm time - 2minutes for 1K nodes. The solution
is to implement a new "tree based" router that scales to 50K nodes fat tree
and also implement "loading" of pre-routes. 

		NOTE: I will send a mail describing the proposed algorithms
and will highly appreciate any input regarding other alternatives and review
of the provided Order of complexity.

	3.	SL2VL support by Path Record - current implementation
ignores any SL2VL mapping. If one will configure those somehow, wrong path
record results will break connectivity.

	4.	Default PKey values are not set - New hardware that does not
have default known PKey (0xffff) will fail any communication as the SM is
supposed to set that value for it.

5.	QoS - OpenSM does not implement any QoS policy. Seems like people
are more interested in that too. The solution is to implement a simple
uniform QoS based on SL2VL and VLArb.

Your comments and ideas are welcome.

Thanks

Eitan Zahavi
Design Technology Director
Mellanox Technologies LTD
Tel:+972-4-9097208
Fax:+972-4-9593245
P.O. Box 586 Yokneam 20692 ISRAEL


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