Whetstone FORTRAN benchmark on the Raspberry Pi Zero

I eventually succumbed to my gadget cravings over Christmas and spent the princely sum of £4 on a Raspberry Pi Zero(*). This has enabled me to re-run the Whetstone double precision FORTRAN benchmarks that I’d previously tried out on my original model B and the Pi 2 last year.

Pi Zero and a 1964 penny coinMy Pi Zero with a 1964 penny coin for scale …

My configuration is currently headless as the HDMI output appeared to stop working after around 5 minutes use. At less than the price of a sandwich at an average motorway service station, it’s not worth the hassle to send it back for the refund graciously offered by the supplier to my somewhat tetchy tweet … I’ll simply replace it with another one when they’re a little easier to obtain.

Anyway, taking an average of 10 runs over 100,000 loops, the benchmark indicates a performance of 201,159 double Whetstone KIPS (thousands of instructions per second), which puts it squarely between that of the original model B (150,962) and a single core of the quad-core Pi 2 (276,369).

The Raspberry Pi Zero running the FORTRAN Whetstone double precision benchmarkBenchmark output

Hmm. Now what?!

(*) In reality £18.50, including postage and packaging, an 8Gb micro SD card and the Pi Zero essentials kit from The Pi Hut.

Your thoughts?