Is building on arm64 architecture such as Jetson TX1 considered as cross
> build? I happen to have an idle Jetson TX1 with 4GB memory, don't know if
> useful.


The big advantage of the TX1 is the powerful Nvidia GPU that can be used
for all kinds of matrix operations.  The GPU is why the little TX1 board
sells for $400 and not for $40.  Seems a waist to use one of these to host
a compiler where the GPU is not needed.

Just this week I tried moving some computation I was running from CPU to
GPU and saw a 30X speed up.  From hours to minute per cycle.   Your TX1's
GPU has 256 cores and each can do full 32-bit floating point math.

Yes a BBB is slow but my Raspberry Pi 3 is impressively fast for what it is
-- 

Chris Albertson
Redondo Beach, California
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