HotSort on the Jetson TK1 Dev Kit

The ~5 Watt Jetson TK1 can sort 16K 32-bit keys in 0.07 msecs or ~220 Mkeys/sec!

You can see the TK1 results for sorting 32-bit, 32+32 and 64-bit keys here.

I’ve also added these results to the end of the HotSort benchmark PDF.

My expectation was that the K1 would be able to sort 16K keys in ~0.05 msecs. instead of ~0.07 so I’m curious if there are architectural differences other than the reduced size register file.

Finally, note that an A15 core running at 2.3 GHz can qsort() 16K keys at only 4 Mkeys/sec. This declines to less than 2.5 Mkeys/sec. when sorting 1M keys while the TK1 hammers away at 72 Mkeys/sec.

Let me know if you have any questions about the TK1 or HotSort.