> 6. To test gcc, I found and downloaded a C-language version of the > long-used linpack benchmark for floating-point performance.
Measuring floating point performance on a machine without a FPU is an interesting exercise, but the results are a bit misleading. gcc fp-bit softfloat performance is known to be miserable. This CPU is capable of some 300+ MIPS and has SIMD extensions operating on quad 16 bit / double 32bit words. It should be capable of decoding 320x240 H.264 video realtime, there are optimized mplayer plugins at Ingenics site. I compiled both mpg123, which uses floating point decoder, and mpg321, which uses integer-only libmad for Ben, and compared performance. The results: mpg123 can't play mp3 realtime at all, while mpg321 eats some 25% CPU time. I think libvorbis/libtremor benchmarking would give similar results, so I'd avoid libmpg123 and libvorbis in any media software on NanoNote. Thanks for sharing your data. _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
