【Fujitsu】FUJITSU AP1000

The Fujitsu AP1000, announced in October 1992, was Fujitsu’s first scalar-parallel supercomputer that was formed by connecting general-purpose workstations together with a high-speed network. The AP1000 was a distributed-memory, highly parallel computer built from between 16 and 1,024 processing elements called cells. The network connecting the cells was called T-Net, which had a 2D torus topology.

As network technology grew more sophisticated, Fujitsu developed a low latency, high-throughput cell network to improve inter-processor communication performance and used hardware components (routing controllers) for message handling to increase speeds. These two factors allowed the AP1000 to parallel-process operations with large volume cells. Fujitsu established its basic technology for scalar-parallel supercomputers with the AP1000 and continued this technology in the AP3000.

Specifications of the Fujitsu AP1000
Introduced October 1992
No. of cells 16-1024
Cell processor SPARC IU + FPU(25MHz) (*1)
Memory capacity 16 MB/cell
Cell-connecting network T-Net (25 MB/s, four channels)

(*1)FPU: Floating-point unit or floating-point-number processing unit.

The specifications above were correct at the time the products were announced. Some specifications were later revised due to product upgrades.