primes_benchmark

Finding Primes for Benchmarks

This repository is based upon @brucehoult's prime application, which is described best by him:

// Program to count primes. I wanted something that could run in 16 KB but took enough
// time to measure on a modern x86 and is not susceptible to optimizer tricks.
// Code size is for just the countPrimes() function with gcc -O.
//
// Higher opt level is not allowed, but tune or align flags may be added. I've made an
// exception for Elbrus, only because the difference is so dramatic. It is generally not
// for other CPUs.

Time (seconds)	System	Architecture	Processor @ Speed	Size (bytes)
2.458	Apple Macbook Pro M3 Max	arm64	Apple Silicon M3 @ 4 GHz	260
2.517	Dell Latitude 3440	x86_64	Intel i5-1335U @ 2.495 GHz	246
2.957	Apple Macbook Pro M1	arm64	Apple Silicon M1 @ 3.2 GHz	264
6.911	Raspberry Pi 5 Model B Rev 1.0	aarch64	Broadcom BCM2712 @ 2.4 GHz	268
9.498	Raspberry Pi 4 Model B	armv7l	Broadcom BCM2711 @ 2 GHz	300
14.623	BeagleBoard X15	armv7l	TI Sitara AM5728 @ 1.5GHz	228
15.092	Pine64 Star64	riscv64	SiFive U74 @ 1.5GHz	236
15.134	StarFive VisionFive 2	riscv64	SiFive U74 @ 1.5 GHz	216
18.950	SiFive HiFive Unmatched	riscv64	SiFive U74 @ 1.5 GHz	236
22.638	StarFive VisionFive	riscv64	SiFive U74 @ 1 GHz	208
23.337	Raspberry Pi 3	aarch64	Broadcom BCM2837 @ 1.2 GHz	256
23.925	BeaglePlay	aarch64	TI Sitara AM625 @ 1.4 GHz	256
37.130	Sipeed RV Dock	riscv64	Allwinner D1 (XuanTie C906) @ 1.0 GHz	236
40.771	Raspberry Pi 2	armv7l	BCM2836 @ 900 MHz	268
51.305	Raspberry Pi Zero W Rev 1.1	armv6l	BCM2835 @ 1 GHz	268
77.672	Raspberry Pi 1	armv6l	BCM2835 @ 250 MHz	268

CPUs

• M3
• M1
• Broadcom BCM2711
• Broadcom BCM2835
• TI Sitara AM5728
• SiFive U74
• XuanTie C906

Reg