performance measurements

Each table row shows performance measurements for this F# Mono program with a particular command-line input value N.

 N  CPU secs Elapsed secs Memory KB Code B ≈ CPU Load
500,000Failed  267   

Read the ↓ make, command line, and program output logs to see how this program was run.

Read thread-ring benchmark to see what this program should do.

 notes

F# Compiler for F# 3.1 (Open Source Edition)

Mono JIT compiler version 4.1.0 (master/435cc01 Wed May 20 22:58:47 PDT 2015)
LLVM: yes(3.6.0svn-mono-master/ce4fcec)
GC: sgen

 thread-ring F# Mono #4 program source code

(*  The Computer Language Benchmarks Game
    http://benchmarksgame.alioth.debian.org/

    contributed by Jomo Fisher
    modified by Kostas Rontogiannis

    Using an array of Async<unit> for the workers and
    a shared token between threads.

    Compile : 
        fsc --tailcalls+ -O --platform:x64 ThreadRingNew.fs -o ThreadRingNew.exe
    Execute :
        mono ThreadRingNew.exe 50000000
*)

let NumberOfThreads = 503

let mutable (workers : Async<unit>[]) = null
let mutable token = -1

let createWorker i = 
    let next = (i + 1) % NumberOfThreads
    async { if token = 0 then 
                printfn "%d" (i + 1)
                exit 0 
            else 
                token <- token - 1
                return! workers.[next] }

[<EntryPoint>]
let main args = 
    token   <- int args.[0]
    workers <- Array.init NumberOfThreads createWorker
    Async.StartImmediate(workers.[0])
    0

 make, command-line, and program output logs

Fri, 22 May 2015 20:11:47 GMT

MAKE:
mv threadring.fsharp-4.fsharp threadring.fsharp-4.fs
/usr/local/bin/fsharpc --target:exe --platform:x64 -O  -o threadring.fsharp-4.fsharp_run.exe threadring.fsharp-4.fs
F# Compiler for F# 3.1 (Open Source Edition)
Freely distributed under the Apache 2.0 Open Source License

/home/dunham/benchmarksgame_onecore/threadring/tmp/threadring.fsharp-4.fs(16,1): warning FS0221: The declarations in this file will be placed in an implicit module 'Threadring.fsharp-4' based on the file name 'threadring.fsharp-4.fs'. However this is not a valid F# identifier, so the contents will not be accessible from other files. Consider renaming the file or adding a 'module' or 'namespace' declaration at the top of the file.
rm threadring.fsharp-4.fs
3.86s to complete and log all make actions

COMMAND LINE:
/usr/local/bin/mono --llvm threadring.fsharp-4.fsharp_run.exe 500000

PROGRAM FAILED 


PROGRAM OUTPUT:

mono: /usr/local/src/llvm/include/llvm/IR/Instructions.h:999: void llvm::ICmpInst::AssertOK(): Assertion `getOperand(0)->getType() == getOperand(1)->getType() && "Both operands to ICmp instruction are not of the same type!"' failed.
Stacktrace:

  at <unknown> <0xffffffff>
  at Microsoft.FSharp.Core.PrintfModule.PrintFormatLineToTextWriter<T_REF> (System.IO.TextWriter,Microsoft.FSharp.Core.PrintfFormat`4<T_REF, System.IO.TextWriter, Microsoft.FSharp.Core.Unit, Microsoft.FSharp.Core.Unit>) <0x0004a>
  at Threadring.fsharp-4/createWorker@23.Invoke (Microsoft.FSharp.Core.Unit) <0x0007b>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x0008f>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@805<b_REF, a_REF>.Invoke (Microsoft.FSharp.Control.AsyncParams`1<b_REF>) <0x00060>
  at Microsoft.FSharp.Control.AsyncBuilderImpl/callA@809-2<b_REF>.Invoke (Microsoft.FSharp.Core.Unit) <0x00019>
  at <StartupCode$FSharp-Core>.$Control.loop@426-40 (Microsoft.FSharp.Control.Trampoline,Microsoft.FSharp.Core.FSharpFunc`2<Microsoft.FSharp.Core.Unit, Microsoft.FSharp.Control.FakeUnitValue>) <0x0002a>
  at Microsoft.FSharp.Control.Trampoline.ExecuteAction (Microsoft.FSharp.Core.FSharpFunc`2<Microsoft.FSharp.Core.Unit, Microsoft.FSharp.Control.FakeUnitValue>) <0x00041>
  at Microsoft.FSharp.Control.TrampolineHolder.Protect (Microsoft.FSharp.Core.FSharpFunc`2<Microsoft.FSharp.Core.Unit, Microsoft.FSharp.Control.FakeUnitValue>) <0x00050>
  at Microsoft.FSharp.Control.AsyncBuilderImpl.startAsync<T_REF> (System.Threading.CancellationToken,Microsoft.FSharp.Core.FSharpFunc`2<T_REF, Microsoft.FSharp.Control.FakeUnitValue>,Microsoft.FSharp.Core.FSharpFunc`2<System.Exception, Microsoft.FSharp.Control.FakeUnitValue>,Microsoft.FSharp.Core.FSharpFunc`2<System.OperationCanceledException, Microsoft.FSharp.Control.FakeUnitValue>,Microsoft.FSharp.Control.FSharpAsync`1<T_REF>) <0x00085>
  at Microsoft.FSharp.Control.CancellationTokenOps.StartWithContinuations<T_REF> (System.Threading.CancellationToken,Microsoft.FSharp.Control.FSharpAsync`1<T_REF>,Microsoft.FSharp.Core.FSharpFunc`2<T_REF, Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpFunc`2<System.Exception, Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpFunc`2<System.OperationCanceledException, Microsoft.FSharp.Core.Unit>) <0x000ac>
  at Microsoft.FSharp.Control.FSharpAsync.StartWithContinuations<T_REF> (Microsoft.FSharp.Control.FSharpAsync`1<T_REF>,Microsoft.FSharp.Core.FSharpFunc`2<T_REF, Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpFunc`2<System.Exception, Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpFunc`2<System.OperationCanceledException, Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpOption`1<System.Threading.CancellationToken>) <0x00078>
  at Microsoft.FSharp.Control.FSharpAsync.StartImmediate (Microsoft.FSharp.Control.FSharpAsync`1<Microsoft.FSharp.Core.Unit>,Microsoft.FSharp.Core.FSharpOption`1<System.Threading.CancellationToken>) <0x0005a>
  at Threadring.fsharp-4.main (string[]) <0x000a3>
  at (wrapper runtime-invoke) <Module>.runtime_invoke_int_object (object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

	/usr/local/bin/mono() [0x61d0e0]
	/lib/x86_64-linux-gnu/libpthread.so.0(+0x10d10) [0x7f52fe65ed10]
	/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x37) [0x7f52fe0a3267]
	/lib/x86_64-linux-gnu/libc.so.6(abort+0x16a) [0x7f52fe0a4eca]
	/lib/x86_64-linux-gnu/libc.so.6(+0x2e03d) [0x7f52fe09c03d]
	/lib/x86_64-linux-gnu/libc.so.6(+0x2e0f2) [0x7f52fe09c0f2]
	/usr/local/bin/mono() [0x7da6c6]
	/usr/local/bin/mono(LLVMBuildICmp+0x47) [0x112b6c7]
	/usr/local/bin/mono() [0x658617]
	/usr/local/bin/mono() [0x6922b9]
	/usr/local/bin/mono() [0x6930b7]
	/usr/local/bin/mono() [0x59ee7c]
	/usr/local/bin/mono() [0x59f4bb]
	/usr/local/bin/mono() [0x61e370]
	[0x414e8166]

Debug info from gdb:


=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================

Revised BSD license

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