COMPUTE ATLAS Supercomputer supply-chain graph
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Parts/Operating systems/Compaq Tru64 UNIX

Operating systems · Tru64 UNIX · 1998

Compaq Tru64 UNIX

DEC's OSF/1-derived Unix for Alpha, renamed Tru64 UNIX after Compaq's 1998 acquisition of DEC. Ran ASCI Q's AlphaServer SC45 nodes.

Why this part

TOP500's system record for ASCI Q names Tru64 UNIX directly, but the name itself is a marker of the acquisition chain already documented on this system's row. Digital Equipment Corporation shipped this software as DEC OSF/1 AXP, Compaq renamed it Tru64 UNIX after acquiring DEC in 1998, and ASCI Q ran under the Compaq name in 2002, the same year HP acquired Compaq and absorbed it again. The operating system changed brand twice without changing code, which is the software half of the same three-hop corporate chain that moved the Alpha silicon from DEC to Compaq to HP. We found no LANL or HP primary document with fetchable text naming the OS directly, so TOP500's system page is the only source.

Systems using this part

Systems
3
Rmax underneath
22.32 TFlop/s
Units recorded
-
0 of 3 edges disclose a quantity
System Role Country Units System Rmax Supplied by Rank
ASCI Q
2002-11
Operating system USA - 13.88 TFlop/s Compaq
now Hewlett Packard Enterprise
#2 →
TERA-1
2001-12
Operating system France - 3.98 TFlop/s Compaq
now Hewlett Packard Enterprise
#7 →
Lemieux
2001
Operating system USA - 4.46 TFlop/s Compaq
now Hewlett Packard Enterprise
#3 →

“Units recorded” sums only the edges where a public source states a quantity. It is a floor, not a total, and should never be read as installed base.

Further reading