home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.super
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!ames!data.nas.nasa.gov!wilbur.nas.nasa.gov!eugene
- From: eugene@wilbur.nas.nasa.gov (Eugene N. Miya)
- Subject: Der Blinken Lights: What are people paying for
- References: <46021@ogicse.ogi.edu> <JET.92Nov17104503@boxer.nas.nasa.gov> <1992Nov17.192804.4410@news.eng.convex.com>
- Sender: news@nas.nasa.gov (News Administrator)
- Organization: NAS, NASA Ames Research Center, Moffett Field, CA
- Date: Wed, 18 Nov 92 00:36:55 GMT
- Message-ID: <1992Nov18.003655.2629@nas.nasa.gov>
- Lines: 33
-
- In article <1992Nov17.192804.4410@news.eng.convex.com>
- patrick@convex.COM (Patrick F. McGehearty) writes:
- Discussion on the C.mmp.
- >However, current systems have other methods for getting similar information.
- >Other than being a designer preference for "flash" vs "cool", what benefits
- >do lots of blinking lights offer, and what should they represent?
- >I.e. Do people have suggestions for specific hardware events that might
- >be connected to blinking lights on a massively parallel shared memory super?
-
- This is a good question if one stops a moment to really think about it.
- The software methods of current monitoring systems tend to be invasive,
- more so than people are willing to admit (I have a copy of Viz'92 in front
- of me). I thought about how I would answer this, and it occurred to me that
- I wanted to know about the occurence of contention. But this is wrong.
-
- Event programmability is probably the most important thing you can
- build into a diagnostic light system. I don't think we will know right off
- what specific events we will want to watch. If we did, then we would discover
- that raises questions about events the hardware can't detect.
-
- A light system is probably best designed to detect the occurance of events in
- a way less invasive than software. This flexibility is more useful than
- software. Lights have numerous of problems: they are easily overwhelmed,
- take up lots of space (real estate), but they might be the answer to
- information loss when pushing data thru an Ethernet or other control straw
- to a workstation. But I guess we should be at SC'92 to discuss this.
-
- --eugene miya, NASA Ames Research Center, eugene@orville.nas.nasa.gov
- Associate Editor, Software and Publication Reviews
- Scientific Programming
- {uunet,mailrus,other gateways}!ames!eugene
- Seeking Books to buy: Bongard, Pattern Recognition
- 3 down 1 to go.
-