BREAKING: In a new world record.
The program that executed the calculation of 100 trillion digits of pi is called y-cruncher v0.7.8, by Alexander J. Yee. The algorithm employed is called the Chudnovsky algorithm. The computing node involved is an n2-highmem-128 with 128 vCPUs and an 864-GB RAM.
The calculation itself began on Thursday, October 14, at 12:45 AM EDT in 2021, and ended on Monday, March 21, at 12:16 AM EDT, in 2022. That's 157 days, 23 hours, 31 minutes, and 7.651 seconds. It almost feels like a something a sci-fi android would say and do. The storage size of this unconscionably large number is 515 TB of 663 TB available, with a total I/O of 43.5 PB read, 38.5 PB written, and 82 PB total.Naturally, it takes a lot of computing power, storage, and networking finesse to make a calculation of this magnitude feasible. Google Cloud estimated the size of temporary storage needed to complete a calculation of roughly 554 TB.
In fact, the firm created a cluster of one computational node and 32 storage nodes — comprising a total of 64 iSCSI block storage targets. There's much to admire about Google Cloud's efforts in reaching a final solution for the first 100 trillion digits in the number pi. But this goes beyond the ancient Greek letter pi, and the number behind it.
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