🚀 go-pugleaf

In article <1993Jan6.180326@siisun.epfl.ch> brossard@siisun.epfl.ch (Alain
Brossard EPFL-SIC/SII) writes:
>In article <BzL9CC.9E@rex.uokhsc.edu>, ben@rex.uokhsc.edu (Benjamin Z.
Goldsteen) writes:
>|> 
>|>        I am curious as to what anybody thinks of the Cray EL.  I am
>|> looking over some stuff, but I was wondering what other people think of
>|> it -- especially people who have worked with it. 
>
>    The slowest NFS server I've ever used!!  And after one full year
>of operations, Cray still hasn't managed to fix this.  Also the least stable,
>though to be fair Cray seems to have finally succeeded in providing
>us with a stable machine.  You wouldn't believe how often it used to
>crash in the first few months.
>
>    
>-- 
>
>Alain Brossard, Ecole Polytechnique Federale de Lausanne,
>	SIC/SII, EL-Ecublens, CH-1015 Lausanne, Suisse, +41 21 693-2211
>brossard@sic.epfl.ch
>
factoids on cray-el at lausanne polytech (epfl):
- feb92: inst. of worldwide first system at epfl s/n 5110. worlds most
  complex EL file-server only configuration, 62 GB disk including alpha
  testing RAID technology and STK 4400 1.2 TB cartridge robot system.
  ethernet, fddi, hippi.
  2 months collaboration with cray to debug this alpha system.
- may 92 - nov 92: production with alpha prototype: uptime 99.14%
  nfs performance bugs and raid disk bugs fixed.some crashes due to
  hardware not yet uprev'd but known; tape-deamon bugs.
- nov92: replacement of alpha prototype by fully up-rev'd system: no
  unplanned interruption since then. hippi still delayed by third party.
- nfs performance: compare apples with apples - el is average in stand-
  alone, but much better than others with heavy load (average keeps up!).
  this using nfs standard waiting write ack. testing witout write ack
  will be performed soon.
- general cray uptime: cray-2 99.82 % (9 out of 12 months no interrupt)
  y-mp/4e 99.57 % including installation in may 92. this blows the socks
  off other supercomputers installed in switzerland by other vendors.
- information: michel jaunin, head computing center epfl: e-mail
  jaunin@sic.epfl.ch
michel h. reymond, director scientific computing center epfl
e-mail: reymond@sic.epfl.ch