Raspberry Pi 3 + Google TPU?

[pinto0309]

Raspberry Pi 3 + Google TPU?

[PINTO0309]

@reanlee
I already tried the Rpi3 + TPU combination.
There are only Japanese articles, please refer to the following.
https://qiita.com/PINTO/items/dd6ba67643bdd3a0e595

[reanlee]

Hi,

Thank you for your article.

Originally I expected Edge TPU to be better than NCS2's performance in RPi3, the bottleneck seems in the USB bandwidth?

If so, there is a TPU Dev. board, maybe it wil have better bandwidth balance and performance.

Thanks again.

BRs,
Lee

[PINTO0309]

Originally I expected Edge TPU to be better than NCS2's performance in RPi3, the bottleneck seems in the USB bandwidth?

I can not say yet so in an assertive way.
I have not been able to determine where the bottleneck is.

• Image size
  320 x 240 x 8 x 3 = 1843200 bit
  1843200 / 8 = 230400 byte
  230400 / 1024 /1024 = 0.2197265625 Mbyte

• USB2.0 Effective speed
  300 Mbit/sec
  37.5 Mbyte/sec

• Image transfer time
  0.2197265625 Mbyte / 37.5 Mbyte = 0.005859375 sec
  0.005859375 sec = 5.859375 ms

[reanlee]

@PINTO0309
Hi,

Thanks for the reply!

I have no idea at the moment, I can't buy the edge TPU in my region for now. I think I can try the dev. board to compare the performance with USB TPU after I get one.

Thanks & BRs,
Lee