Cray C90 Range
The Cray-C90 range of computers were manufactured from 1992 until 1996. Around 60 of these machines were manufactured, and many customers migrated their workload from the Cray-XMP to a Cray-YMP and on to a C90. Like the Cray-YMP, the Cray-C90 was available with multiple processor configurations of 4, 8 up to 16 processors. Attached SSD and extra IOS were available as options. Over the life of the Cray-C90, new storage systems were added as well as large memory configurations known as M90s. C90 CPUs delivered 1/G Flop each.
Diagrams that describe the inertial workings of the machine.
The C90 range of systems came in a three different cab shapes. The three prongs round a cylinder box for the top end 16 CPU version, cylinder with two boxes for the 2 and 4 cpu versions. The IOS/SSD cabs look like a YMP-model E shape. The C94 and C92 could be configured with secondary air (different shape box cylinder at front) cooling and would have a rectangular box on back.
Sales brochures :
Technical Manuals specific to this machine:
The wrong kind of help turns a crisis into a disaster at NOAA
Having a fire in your $ 30 million Cray C90 computer is bad enough but to see that crisis turned into an irretrievable catastrophe takes just the wrong person with the wrong fire extinguisher. As this message relates …..
551 NOUS40 KWBC 302235 FOS/NOAAPORT NOTICE NO. 1543 SEPTEMBER 30... 1999 ATTENTION FAMILY OF SERVICES SUBSCRIBERS NOAAPORT USERS NOTE THIS MESSAGE WAS SENT AS A SPECIAL NCEP DISCUSSION ENTRAL OPERATIONS/NCEP/NWS/ WASHINGTON DC ALL FIELD PERSONNEL...BELOW IS THE LATEST INFORMATION AVAILABLE ON THE OUTAGE OF THE CRAY C-90 SUPERCOMPUTER AT SUITLAND... MD. THIS INFORMATION WAS SENT TO YOUR REGIONAL DIRECTORS LAST EVENING... AND THEY WERE BRIEFED THIS MORNING. THE EXACT SCHEDULE FOR THE BACKUP... MODEL SUITE IS STILL BEING EVALUATED BY NCEP AND OSO. AS OF 00Z THE...MODEL SUITE ACCOMPANYING THIS MESSAGE WILL GO INTO EFFECT. ADDITIONAL... OPTIONS REGARDING MODEL RUNS AND BACKUP POSSIBILITIES FROM OTHER... ORGANIZATIONS CONTINUE TO BE INVESTIGATED. I WILL KEEP YOU POSTED AS THE MODEL SUITE IS MODIFIED. WE ALSO PLAN TO POST UPDATED INFORMATION ON THE INTERNET BOTH ON THE NCEP AND OSO HOME PAGES. THE NCEP HOME PAGE ADDRESS IS HTTP //WWW.NCEP.NOAA.GOV/ THE OSO HOME PAGE IS HTTP //WWW.NWS.NOAA.GOV/OSO/NOTICES/NOTICES.SHTML INTERNET ADDRESSES ALL LOWER CASE. WE APPRECIATE YOUR PATIENCE DURING THIS CRITICAL PERIOD. LOUIS W. UCCELLINI/DIRECTOR/NCEP FACT SHEET ON NATIONAL WEATHER SERVICES CRAY C90 SUPERCOMPUTER FIRE AT SUITLAND CAMPUS ON MONDAY 9/27/99 AT 4 00 P.M. A FIRE OCCURRED INSIDE THE CRAY C90 SUPERCOMPUTER IN FEDERAL OFFICE BUILDING 4 IN SUITLAND...MD. THE CRAY C90 IS THE CENTRAL NOAA NATIONAL WEATHER SERVICE /NWS/ COMPUTER THAT GENERATES NUMERICAL WEATHER FORECAST MODELS FOR THE NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION /NCEP/ IN CAMP SPRINGS MD. THE PRINCE GEORGES COUNTY FIRE DEPARTMENT RESPONDED AND EXTINGUISHED THE FIRE BY USING DRY CHEMICALS. TWO OF THE POWER SUPPLY UNITS INSIDE OF THE CRAY C90 WERE DAMAGED. THE DRY CHEMICALS USED BY THE FIRE DEPARTMENT CONTAMINATED OTHER COMPONENTS IN THE COMPUTER AS WELL. AFTER AN ASSESSMENT OF THE CRAY C90 COMPUTER...SILICON GRAPHICS INCORPORATED...THE COMPUTER CONTRACTOR...HAS DETERMINED THAT THE COMPUTER HAS BEEN SIGNIFICANTLY DAMAGED. SILICON GRAPHICS DOES NOT BELIEVE THE COMPUTER CAN BE REPAIRED. THE CRAY C90 IS INOPERATIVE. NCEP CONTINUES TO INVESTIGATE OPTIONS FOR RESTORING CRAY C90 SERVICE. IN COLLABORATION WITH NOAA S HIGH PERFORMANCE COMPUTING CENTER /HPCC/... NCEP IS GETTING A SECOND OPINION THROUGH AN EXPERT AT NIST ON THE EXTENT OF DAMAGE CAUSED BY THE FIRE. ALL CRITICAL OPERATIONS AT NCEP CONTINUE TO BE SUPPORTED. THE NWS FORECASTERS CONTINUE TO PERFORM THEIR DUTIES UTILIZING NUMERICAL MODELS RUN ON OTHER NWS COMPUTERS AND ACCESSED FROM OTHER NATIONAL CENTERS. NCEP HAS IMPLEMENTED PRE-ARRANGED BACKUP SUPPORT PROCEDURES USING AIR FORCE... NAVY... AND FSL FORECAST PRODUCTS. SOME MODELS WHICH USUALLY RUN FOUR TIMES DAILY ARE NOW RUNNING TWICE DAILY AND ONE MODEL THAT IS USUALLY RUN HOURLY IS BEING RUN EVERY THREE HOURS... WITH HOURLY RUNS TO BE RESUMED BY FRIDAY OCTOBER 1ST. WE ARE ABLE TO MAKE DO WITH THESE RUNS IN ADDITION TO USING THE OTHER MODEL INFORMATION AVAILABLE FROM OTHER NATIONAL CENTERS. THE NWS HAS TAKEN ALL STEPS NECESSARY TO MINIMIZE POTENTIAL IMPACTS TO NWS FORECASTERS AND THOSE OUTSIDE OF THE NWS WHO RELY ON OUR PRODUCTS. END NNNN
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