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- From: eugene@wilbur.nas.nasa.gov (Eugene N. Miya)
- Newsgroups: comp.sys.super
- Subject: Re: KSR curiosity
- Keywords: CACM
- Message-ID: <1992Aug13.163310.20704@nas.nasa.gov>
- Date: 13 Aug 92 16:33:10 GMT
- References: <1992Aug11.214207.16247@tera.com> <1992Aug12.171629.2858@nas.nasa.gov>
- Sender: news@nas.nasa.gov (News Administrator)
- Organization: NAS, NASA Ames Research Center, Moffett Field, CA
- Lines: 26
-
- In article <1992Aug12.171629.2858@nas.nasa.gov> fineberg@nas.nasa.gov writes:
- >What I found amusing in Bell's article was the claims that KSR had proven
- >that its architecture was scalable to 1088 nodes. At a talk I heard they
- >had never tried constructing a machine with more than 128 nodes, and have
- >little experinece with machines larger than 64 nodes. Thats a long way
- >from 1088. It reminds me of the claims TMC has made about the CM5's
- >scalability to 16K nodes.
-
- A similar early claim was made for the CMU Cm* as being capable of having
- almost 16K processors (50 were made, just a matter of how much you wanted
- to spend). You can tell how many bits were used for processor
- addressing using this number (right?). That's "Design" and "Engineering."
- "Proving" you can build it is "Manufacturing." 8^)
-
- Steve Lundstrom over at Stanford believes that unless you build to the maximum
- designed size then sell off the pieces, you won't discover all the problems
- (i.e. physical world) inherent in a design. Other "weird" [typically not
- powers of 2] numbers have their reasons in the world (the PEPE had a weird
- number, the Delta has a non-2^n number); you can only ask why and hear their
- explanation.
-
- --eugene miya, NASA Ames Research Center, eugene@orville.nas.nasa.gov
- Resident Cynic, Rock of Ages Home for Retired Hackers
- {uunet,mailrus,other gateways}!ames!eugene
- Second Favorite email message: Returned mail: Cannot send message for 3 days
- A Ref: Mathematics and Plausible Reasoning, vol. 1, G. Polya
-