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Switzerland's University of Applied Sciences Graubünden has challenged the world record for calculating Pi, claiming it has computed the mathematical constant to 62.8 trillion digits.
The university 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.
Helpfully, the uni has also published details of the hardware used for its feat.
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.
Thirty-four of those disks were used to store values swapped from RAM – a design chosen because memory is very expensive. 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.
www.theregister.com
The university 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.
Helpfully, the uni has also published details of the hardware used for its feat.
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.
Thirty-four of those disks were used to store values swapped from RAM – a design chosen because memory is very expensive. 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.
Pi calculated to '62.8 trillion digits' with a pair of 32-core AMD Epyc chips, 1TB RAM, 510TB disk space
Swiss uni challenges world record after 108 days and 9 hours of divisive effort
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