Re: [RPRWG] MSC study groups: memory channel and RPR on the backplane
Mike,
Thanks for your timely and insightful comments.
While I understand some of your concerns, the scope
of projects in the "datacenter" is already rather
confused, with hypertransport, fibrechannel, FDDI,
Serial ATA, PciExpress, Serial SCSI, Infiniband,
etc.
Your note is being forwarded, as requested.
DVJ
David V. James
3180 South Ct
Palo Alto, CA 94306
Home: +1.650.494.0926
+1.650.856.9801
Cell: +1.650.954.6906
Fax: +1.360.242.5508
Base: dvj@xxxxxxxxxxxx
>> -----Original Message-----
>> From: owner-stds-802-17@xxxxxxxxxxxxxxxxx
>> [mailto:owner-stds-802-17@xxxxxxxxxxxxxxxxx]On Behalf Of Mike Takefman
>> Sent: Monday, March 29, 2004 5:12 PM
>> To: STDS-802-17@xxxxxxxxxxxxxxxxx
>> Subject: Re: [RPRWG] MSC study groups: memory channel and RPR on the
>> backplane
>>
>>
>> David,
>>
>> Please forward this to bob.davis and the MSC reflector.
>>
>> I am not sure that I will be able to attend especially
>> given the delta from east to west coast time.
>>
>> I strongly object to any concept of MSC doing an RPR
>> in the datacenter project.
>>
>> I personally believe that RPRontheBackplane is not
>> within the scope of LMSC, whereas a networking
>> standard which is the basis of the datacenter
>> design does fall within our scope.
>>
>> The RPRWG extended a courtesy to you and by extension
>> the MSC to investigate RPRontheBackplane. My personal
>> concern is confusion in the marketplace between
>> RPR networking standards and other RPR-derived standards.
>> RPR in the datacenter is in my opinion a networking
>> standard.
>>
>> cheers,
>>
>> mike
>>
>> David V James wrote:
>> > To: MSC
>> > Cc: P802.17 WG
>> > Bob Grow
>> > FYI: sync-e
>> >
>> > All,
>> >
>> > Please forward this to whomever you deem appropriate. These topics are
>> > intended to be open to all, but I hate to flood uninterested mailboxes.
>> >
>> > As background, the MSC is similar to the LMSC, in that MSC sponsors
>> > standard projects. Most noteable are IEEE 754 Floating Point
>> > and IEEE 1394, and other microprocessor standards. More information
>> > is available at: http://grouper.ieee.org/groups/msc/.
>> >
>> > Bob David (MSC Chair) and myself have scheduled a teleconference, to
>> > discuss the following, in preparation for the following MSC meeting,
>> > which occurs on 2004Apr12.
>> >
>> > 14:30 -- 1) Memory channel interface PAR
>> > 15:30 -- 2) RPR on the backplane PAR
>> > 16:30 -- 3) Discussion of OUIs: uniqueness and MSC assignments
>> >
>> > From a formality perspective, topics (1) and (2) are study group
>> > meetings; topic (3) is an adhoc meeting of (potentially) interested
>> > parties.
>> >
>> > For those that wish to come in person:
>> > 1001 Bayhill drive, #180 San Bruno, CA 90466
>> > Host: 650-624-4715, leonard.tsai@xxxxxxxxxx
>> > Near the El Camino exit off Hwy 380, directions come later.
>> >
>> > Conference facilities through freeconference.com:
>> > Date: Friday, April 02, 2004
>> > Start Time: 2:30 p.m. Pacific Std Time
>> > End Time: 5:25 p.m. Pacific Std Time
>> > Participants: 25
>> > Type of Conference: Web-Scheduled Standard
>> > Dial-in Number: 1-702-835-5000 (Las Vegas, Nevada)
>> > Participant Access Code: 159617
>> >
>> > On topic (1), Bob Davis will be providing material for discussion.
>> >
>> > On topic (2), some rough ideas for the PAR include the following:
>> >
>> > Based on the PRP draft, which includes:
>> > resilience, spatial reuse, some plug&play, some service classes
>> > Extensions that are needed:
>> > clarity of rate-counts and fairness
>> > elimination of burdensome options
>> > complete plug&play, complete bandwidth guarantees
>> > New facilities mandated by the environment:
>> > low latency (pre-emption, perhaps)
>> > synchronous services (compatible with sync-ethernet)
>> > destination-asserted reverse flow control
>> > backplane PHYs (perhaps leveraged from 802.xx)
>> > low-overhead shared memory primitives
>> > With the existing RPR PHYs, and the existing/enhanced RPR services,
>> > this should also meet the needs of RPR in-the-data-center.
>> >
>> > More details and document will be provided.
>> > RSVPs requested, so sufficient seats and phone-ports will be
>> > available.
>> >
>> > DVJ
>> > MSC Secretary &
>> > RPR on the backplane study group chair
>> >
>> >
>> > David V. James
>> > 3180 South Ct
>> > Palo Alto, CA 94306
>> > Home: +1.650.494.0926
>> > +1.650.856.9801
>> > Cell: +1.650.954.6906
>> > Fax: +1.360.242.5508
>> > Base: dvj@xxxxxxxxxxxx
>>
>>
>> --
>> Michael Takefman tak@xxxxxxxxx
>> Distinguished Engineer, Cisco Systems
>> Chair IEEE 802.17 Stds WG
>> 3000 Innovation Dr, Ottawa, Canada, K2K 3E8
>> voice: 613-254-3399 cell:613-220-6991
>>