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https://github.com/status-im/nim-taskpools.git
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79c18d7c94
* add fibonacci bench https://github.com/status-im/nim-taskpools/issues/5 * unify allocs, don't use a mix of calloc malloc and wv_alloc * Chase-Lev Deque: "unlimited" growth * Remove affinity / CPU pinning support: does not work for ARM (Big.Little Arch), macOS, Alder Lake (P and E cores) and multiple instances of a program get the main thread pinned on the same core. * Remove weave-specific things: WV_NUM_THREADS, the design-by-contract asserts * avoid running destructors on freshly allocated tasks on Nim 1.6
36 lines
759 B
Nim
36 lines
759 B
Nim
import
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# STD lib
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os, strutils, threadpool, strformat,
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# bench
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../wtime
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# Using Nim's standard threadpool
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# Compile with "nim c --threads:on -d:release -d:danger --outdir:build benchmarks/fibonacci/stdnim_fib.nim"
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#
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# Note: it breaks at fib 16.
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proc parfib(n: uint64): uint64 =
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if n < 2: # Note: be sure to compare n<2 -> return n
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return n # instead of n<=2 -> return 1
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let x = spawn parfib(n-1)
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let y = parfib(n-2)
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return ^x + y
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proc main() =
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if paramCount() != 1:
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echo "Usage: fib <n-th fibonacci number requested>"
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quit 0
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let n = paramStr(1).parseUInt.uint64
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let start = wtime_msec()
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let f = parfib(n)
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let stop = wtime_msec()
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echo "Result: ", f
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echo &"Elapsed wall time: {stop-start:.2} ms"
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main()
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