KFKI TPA XP-1
1992. The last machine marketed under the name "TPA": it's a parallel
multiprocessor machine, with up to 16 processors in a crossbar backplane,
where every processor has it's own direct path to the memory. It was designed
to run applications like nuclear simulation, real-time modelling.
It was a nice machine, but the manufacturing wasn't easy, as the KFKI MSZKI
didn't had the facilities to produce printed circuit boards with 12 layers
(these boards were manufactured in Austria). Unfortunately there was no
call for such a machine in Hungary, so only a prototype was built (shown
above, in a Digital cabinet), although the designers continued to work
on the project, and came up with the idea of the XP-2, where the processor
nodes would have been connected via fibre-optics.
2-16 x MIPS R3000 RISC processor, with RA3010 floating-point coprocessor:
40 nsec cycle time, 128 kB cache, 64 MB local memory on the CPU board
64-1024 MB ECC memory
1-4 x VME bus for I/O (40 MB/s)
A processor card
The machine's peak performance was 20-230 MIPS (about 16-256 VUPs),
floating-point peak was 10-160 MFLOPS. The operating system was a licensed
AT&T SVR4 UNIX, modified for multiprocessing.
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