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Internet of Things
Without the Hype
LinuxBarbados - Thursday, December 17, 2015
http://rayhightower.com
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15 minutes
to start the discussion.
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Why?
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Distance is dead.
Tom Peters, Author
In Search of Excellence
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Gartner Hype Cycle
Image by Jeremy Kemp
https://commons.wikimedia.org/wiki/File:Gartner_Hype_Cycle.svg
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Gartner Hype Cycle
IoT
Peak of Inflated
Expectations
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Commoditization
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Online Brochure?
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Online Brochure?
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Business Apps?
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Business Apps?
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What?
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Bright LEDs
Lasers
Li Ion
Batteries
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Remotely
Operated
Vehicle
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Hardware
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Electronics
Assembly
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Software
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TCP/IP
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Parallella
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RJ-45
Power
μUSB
μHDMI
μSD
RISC
ARM
18 cores: 2 ARM + 16 RISC
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http://rayhightower.com/blog/2014/09/09/solar-powered-parallella/
5 volts
1 amp
5 watts
Solar!
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Find all primes
up to 16,000,000.
Serial on Parallella.
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8 inline int isprime(unsigned long number)
9 {
10 unsigned long i;
11 unsigned long s = sqrt(number);
12 for(i=3;i<=s;i+=2)
13 {
14 if(number % i == 0)
15 return 0;
16 }
17 return 1;
18 }
/* Copyright (c) Adapteva, contributed by M. Thompson with modifications by T. Malthouse. */
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237.1 sec
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Find all primes
up to 16,000,000.
Serial on Mac OS X.
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14.4 sec
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Find all primes
up to 16,000,000.
Parallel on Parallella.
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27 #include
28
29 // Default max number of prime tests per core
30 // Used if a limit it not provided in argv[1]
31 #define DEFAULT_MAX_TESTS 500000
32
33 int main(int argc, char *argv[])
34 {
35 unsigned row, col, coreid, i, j;
36 e_platform_t platform;
37 e_epiphany_t dev;
38
/* Copyright (c) Adapteva, contributed by M. Thompson with modifications by T. Malthouse.*/
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18.6 sec
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Summary: Finding Primes
0" 50" 100" 150" 200" 250"
Parallel
Parallella
Serial
Mac
Serial
Parallella
18.6 sec
14.4 sec
237.1 sec
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Embarrassingly
parallel problem.
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How?
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Dull companies with steady
earnings growth… make
the best investments.
Forbes Magazine
November 1995
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+ +
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Place it.
Press it.
Get it.
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If it has been learned,
it is learnable.
Susan Taylor, Editor
Essence Magazine
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Thanks.
Discussion time!