[Stackless] Google's new Go programming language

[Andrew Dalke]

On Nov 11, 2009, at 9:35 PM, Richard Tew wrote:
> They have an nice example where they chain 100000 microthreads each
> wrapping the same function that increases the value of a passed
> argument by one, with channels inbetween.  Pumping a value through the
> chain takes 1.5 seconds.  I can't imagine that Stackless will be
> anything close to that, given the difference between scripting and
> compiled code.

Did I mess up in my benchmark? I got about 0.07 seconds to go through  
100,000 microthreads.

output:

% spython 100000_tasklets.py
100000
100001
100002
100003
100004
100005
100006
100007
100008
100009
startup time: 0.345
10 elements in: 0.714



Benchmark:


import stackless

def source(ch):
     ch.send_sequence(range(10))
     ch.close()

def chain(up, down):
     for item in up:
         down.send(item+1)
     down.close()

def sink(up):
     for item in up:
         print item

def startup():
     down = stackless.channel()
     stackless.tasklet(source)(down)

     for i in range(100000):
         up = down
         down = stackless.channel()
         stackless.tasklet(chain)(up, down)

     stackless.tasklet(sink)(down)

import time
t1 = time.time()
startup()
t2 = time.time()
stackless.run()
t3 = time.time()
print "startup time:", "%.3f" % (t2-t1)
print "10 elements in:", "%.3f" % (t3-t2)


				Andrew
				dalke at dalkescientific.com