Fuzion • Idioms • Idiom # 30: Parallelize execution of 1000 independent tasks

Idiom # 30: Parallelize execution of 1000 independent tasks

Code

Thread Concurrency in Fuzion is provided though the effect concur.thread. This effect provides an operation spawn that computes a function in parallel.

for i in 1..1000 do
  _ := concur.threads.spawn (() -> f i)

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for i in 1..1000 do
  _ := concur.threads.spawn (() -> f i)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Running Example

ex30 is

  f(i i32) =>
    say "**$i**"

  for i in 1..1000 do
    _ := concur.threads.spawn (() -> f i)

  time.nano.sleep (time.duration.s 2)

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ex30 is
  f(i i32) =>
    say "**$i**"
  for i in 1..1000 do
    _ := concur.threads.spawn (() -> f i)
  time.nano.sleep (time.duration.s 2)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

Alternatively, we can use map:

ex30 is

  f(i i32) =>
    say "**$i**"

  for i in 1..1000 do
    _ := concur.threads.spawn (() -> f i)

  time.nano.sleep (time.duration.s 2)

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ex30 is
  f(i i32) =>
    say "**$i**"
  for i in 1..1000 do
    _ := concur.threads.spawn (() -> f i)
  time.nano.sleep (time.duration.s 2)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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What are effects?

last changed: 2024-07-01

next: Idiom # 31: Recursive factorial (simple)