<Tr> <Td> Itautec </Td> <Td> </Td> <Td> 0.4 </Td> <Td> 411,800 </Td> <Td> 920,830 </Td> <Td> 27,776 </Td> </Tr> <Tr> <Td> Netweb Technologies </Td> <Td> </Td> <Td> 0.2 </Td> <Td> 388,442 </Td> <Td> 520,358 </Td> <Td> 30,056 </Td> </Tr> <Tr> <Td> Xenon Systems </Td> <Td> </Td> <Td> 0.2 </Td> <Td> 335,300 </Td> <Td> 472,498 </Td> <Td> 6,875 </Td> </Tr> <Tr> <Td> AMD, ASUS, FIAS, GSI </Td> <Td> </Td> <Td> 0.2 </Td> <Td> 316,700 </Td> <Td> 593,600 </Td> <Td> 10,976 </Td> </Tr>

Who owns supercomputers and what are they used for