Pi Calculated to "62.8 Trillion Digits" W/ Pair of 32-Core AMD Epyc Chips, 1TB RAM, 510TB Disk Space
upstart writes:
Switzerland's University of Applied Sciences Graubunden [...] yesterday claimed it had broken the record, asserting it beat the previous record of 50 trillion digits, set by Timothy Mullican last year, by 12.8 trillion digits, and completed the task in just over 108 days versus Mullican's 303.
[...] A pair of 32-core AMD Epyc 7542 processors powered the uni's rig. AMD states the CPU cores spend most of their time at 2.9GHz, can burst to 3.4GHz, have 128MB L3 cache and happily run 64 threads apiece. A server with 1TB of RAM was also employed, with Ubuntu Linux 20.04 installed on a pair of solid-state disks of unspecified size.
A JBOD housed 38 7200RPM hard disks, each with 16TB capacity.
[...] Hard disks were chosen over SSDs because SSD performance degrades over time and the university's designers feared their intensive calculations could cause problems. In all, the uni said 510TB of disk space was used.
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