XCore Exchange

Following a recent tweet I received, I am quite interested in finding out what you guys think too - what can you achieve in 1 microsecond using XMOS?

Post your best answers below :-)

On an L1 in 1uS:

25 FIR Taps @ 32 bits
+ 11.2 IIR's @ 32 bits
+ some I/O
+ some XLINK
+ some time left

so...being a newbie.... I have a 100-200 byte message I need to get in and out of the core over IP... with a little bit if inspection and maybe routing.... possible?

timer t;
unsigned x;
t :> x;
t when timerafter(x+100) :> void;

XMatt wrote:timer t;
unsigned x;
t :> x;
t when timerafter(x+100) :> void;

Everyone knows that'll take longer than a microsecond.

I can ouput 25 pixels of a 640x480 driver either bit-mapped or text :)

125 instructions (500 if you are using all the threads!) - L1

And if you are using a G4 you can generate 2 microjoules.

Philosopher's answer:
On an XMOS, you can watch 8 µs going by within 1 µs.


Nick

In one microsecond, on one thread, you can do more than a thousandth of a
2048-bit public RSA en/decryption (one and a half time as much, even).

Or you can send one ninth of a bit at standard UART rates.

Of course optimisation level is at least 1 and c is a streaming channel.