円周率Pi 100億桁でのBenchmark 100.316 seconds
Constant: Pi
Algorithm: Chudnovsky (1988)
Decimal Digits: 10,000,000,000
Hexadecimal Digits: Disabled
Computation Mode: Ram Only
Multi-Threading: Cilk Plus Work-Stealing -> 256 / 256
Start Time: Wed Aug 4 18:21:31 2021
Working Memory… 46.5 GiB (locked, spread: 99%/2)
Twiddle Tables… 286 MiB (locked, spread: 100%/2)
Begin Computation:
Series CommonP2B3… 705,136,706 terms (Expansion Factor = 2.911)
Time: 91.123 seconds ( 1.519 minutes )
Large Division…
Time: 4.483 seconds ( 0.075 minutes )
InvSqrt(10005)…
Time: 3.061 seconds ( 0.051 minutes )
Large Multiply…
Time: 1.641 seconds ( 0.027 minutes )
Pi: 100.316 seconds ( 1.672 minutes )
Base Converting:
Time: 6.481 seconds ( 0.108 minutes )
Writing Decimal Digits:
Time: 2.564 seconds ( 0.043 minutes )
Start Time: Wed Aug 4 18:21:31 2021
End Time: Wed Aug 4 18:24:25 2021
Total Computation Time: 106.798 seconds ( 1.780 minutes )
Start-to-End Wall Time: 173.897 seconds ( 2.898 minutes )
CPU Utilization: 22324.27 % + 802.56 % kernel overhead
Multi-core Efficiency: 87.20 % + 3.14 % kernel overhead
Last Decimal Digits: Pi
9763261541 1423749758 2083180752 2573977719 9605119144 : 9,999,999,950
9403994581 8580686529 2375008092 3106244131 4758821220 : 10,000,000,000
Spot Check: Good through 10,000,000,000
Version: 0.7.8.9507 (Windows/19-ZN2 ~ Kagari)
Processor(s): AMD EPYC 7742 64-Core Processor
Topology: 256 threads / 128 cores / 2 sockets / 2 NUMA nodes
Physical Memory: 549,755,813,888 ( 512 GiB)
CPU Base Frequency: 2,250,030,240 Hz
Validation File: Pi – 20210804-182500.txt
C:\Users\yh001\Desktop\y-cruncher v0.7.8.9507>
epyc 7742 x2 pi 100億桁 100.316seconds
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