Cray T90

The Cray T90 series (code-named Triton during development) was the last of a line of vector processing supercomputers manufactured by Cray Research, Inc, superseding the Cray C90 series. The first machines were shipped in 1995, and featured a 2.2 ns (450 MHz) clock cycle and two-wide vector pipes, for a peak speed of 1.8 gigaflops per processor; the high clock speed arises from the CPUs being built using ECL logic. As with the Cray J90, each CPU contained a scalar data cache, in addition to the instruction buffering/caching which has always been in Cray architectures.

Configurations were available with between four and 32 processors, and with either IEEE 754 or traditional Cray floating point arithmetic; the processors shared an SRAM main memory of up to eight gigabytes, with a bandwidth of three 64-bit words per cycle per CPU (giving a 32-CPU STREAM bandwidth of 360 gigabytes per second). The clock signal is distributed via a fiber-optic harness to the processors.

The T90 series was available in three variants, the T94 (one to four processors), T916 (eight to 16 processors) and T932 (16 to 32 processors).

T90

T90 may refer to:

Cray

Cray Inc. is an American supercomputer manufacturer headquartered in Seattle, Washington. It also manufactures systems for data storage and analytics.

Cray manufactures its products in Chippewa Falls, Wisconsin, where its founder, Seymour Cray, was born and raised. The company also has offices in St. Paul, Minnesota (the site of its original headquarters under Seymour Cray), and numerous other sales, service, engineering, and R&D locations around the world.

Several Cray supercomputer systems are listed in the TOP500, which ranks the most powerful supercomputers in the world. The number of Cray systems on the list varies from year to year.

The company's predecessor, Cray Research, Inc. (CRI), was founded in 1972 by computer designer Seymour Cray. Seymour Cray went on to form the spin-off Cray Computer Corporation (CCC), in 1989, which went bankrupt in 1995, while Cray Research was bought by SGI the next year. Cray Inc. was formed in 2000 when Tera Computer Company purchased the Cray Research Inc. business from SGI and adopted the name of its acquisition.

Bas-Lag

Bas-Lag is the fictional world in which several of China Miéville's novels are set. Bas-Lag is a world where both magic (referred to as "thaumaturgy") and steampunk technology exist, and is home to many intelligent races. It is influenced by the themes and tropes of multiple genres of science fiction, fantasy, and horror.

The Bas-Lag novels

So far there have been three novels set in Bas-Lag. They are:

Additionally, the short story "Jack", featured in the 2005 collection Looking for Jake, is a Bas-Lag story.

Geography

Bas-Lag possesses a number of continents. Two landmasses, Rohagi and Bered Kai Nev, are named in the three novels, though numerous other landmasses and unique structures play important roles in the novels.

Rohagi

The exact proportions and geography of Rohagi are unknown. New Crobuzon lies about ten miles (16 km) inland from its eastern coast, which borders the Swollen Ocean. Immediately south of New Crobuzon is the Rudewood, beyond which lies the Mendican Hills. North of New Crobuzon, along the coast but separated by the Bezhek Mountains, are the ruins of Suroch. To the west, about a thousand miles from New Crobuzon and far beyond the Dancing Shoe Mountains, lies the four-hundred mile wide freshwater lake called Cold Claw Loch. The Loch connects with the vast, inland Cold Claw Sea, eight hundred miles to the north, via a natural channel called Cold Claw Sound. The Cold Claw Sea is talon-shaped, stretching eastward a great distance, almost connecting with the Swollen Ocean before curving southward for about two hundred miles, finally ending about seven hundred miles north of New Crobuzon. This southward curve is the Gengris, and is populated by the dangerous and unpredictable grindylow.

Cray (disambiguation)

Cray is a supercomputer manufacturer based in Seattle, Washington.

Cray may also refer to:

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