On segunda-feira, 7 de outubro de 2019 07:06:07 PDT Roland Hughes wrote: > We now > have the storage and computing power available to create the database or > 2^128 database tables if needed.
Do you know how ludicrous this statement is? Let's say you had 128 bits for each of the 2^128 entries, with no overhead, and each bit weighed 1 picogram (a 8 GB RAM DIMM weighs 185 g, which is 21 ng/ byte). You'll need a storage of 4.3 * 10^25 kg, or about 7.3 times the mass of the Earth. Let's say that creating such a table takes an average of 1 attosecond per entry, or one million entries per nanosecond. Note I'm saying your farm is producing 10^18 entries per second, reaching at least 1 exaflops, producing about 16 exabytes per second of data. You'll need 10 trillion years to calculate. The only way this is possible is if you significantly break the problem such that you don't need 2^128 entries. For example, 2^80 entries would weigh "only" 155 million tons and that's only 16 yottabytes of storage, taking only 14 days to run in that magic[*] farm, with magic connectivity and magic storage. [*] After applying Clarke's Third Law. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel System Software Products _______________________________________________ Interest mailing list Interest@qt-project.org https://lists.qt-project.org/listinfo/interest