# Dot abruptly ends Julia session

**URL:** <https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748>\
**Category:** New to Julia\
**Created:** [January 21, 2021, 10:05pm UTC](https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748 "2021-01-21T22:05:09Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![jhat](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jhat/32/21238_2.png) [@jhat](https://discourse.julialang.org/u/jhat)\
**Post date:** [January 21, 2021, 10:05pm UTC](https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748/1 "2021-01-21T22:05:09Z")

</div>

I’m new to Julia. The following code abruptly ends my Julia 1.5.3 session (`Julia has exited.`) at `ii = 14` when I’m working in Windows 10, but it runs to completion when converting to `ComplexF32`. When I run it on a Mac the code as written runs to completion. Am I missing something obvious (besides derogatory statements about Windows)? If this isn’t something obvious, any advice on where best to post this is appreciated.

```julia
using Random: seed!
using LinearAlgebra

seed!(0)
for ii = 1:20
    @show ii, 2^ii    
    dot( randn(ComplexF64,2^ii),randn(ComplexF64,2^ii) );
end

```

---

<div class="post-metadata">

**Author:** ![StefanKarpinski](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stefankarpinski/32/24_2.png) [@StefanKarpinski](https://discourse.julialang.org/u/StefanKarpinski)\
**Post date:** [January 21, 2021, 10:32pm UTC](https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748/2 "2021-01-21T22:32:25Z")

</div>

Works on macOS, so seems possibly Windows-specific. What’s your `versioninfo()`?

---

<div class="post-metadata">

**Author:** ![bkamins](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/bkamins/32/208538_2.png) [@bkamins](https://discourse.julialang.org/u/bkamins)\
**Post date:** [January 21, 2021, 10:35pm UTC](https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748/3 "2021-01-21T22:35:24Z")

</div>

This is on Win10 both on Version 1.5.3 (2020-11-09) and Version 1.6.0-beta1.0 (2021-01-08) release-1.6/b84990e1ac (fork: 107 commits, 43 days) I get:

```julia
julia> using Random: seed!

julia> using LinearAlgebra

julia> seed!(0)
MersenneTwister(0)

julia> for ii = 1:20
           @show ii, 2^ii
           dot( randn(ComplexF64,2^ii),randn(ComplexF64,2^ii) );
       end
(ii, 2 ^ ii) = (1, 2)
(ii, 2 ^ ii) = (2, 4)
(ii, 2 ^ ii) = (3, 8)
(ii, 2 ^ ii) = (4, 16)
(ii, 2 ^ ii) = (5, 32)
(ii, 2 ^ ii) = (6, 64)
(ii, 2 ^ ii) = (7, 128)
(ii, 2 ^ ii) = (8, 256)
(ii, 2 ^ ii) = (9, 512)
(ii, 2 ^ ii) = (10, 1024)
(ii, 2 ^ ii) = (11, 2048)
(ii, 2 ^ ii) = (12, 4096)
(ii, 2 ^ ii) = (13, 8192)
(ii, 2 ^ ii) = (14, 16384)

Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- at 0x1fcc08e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fcc08e0 -- DCABS164_ at D:\julia-1.6.0-beta1-win64\bin\libopenblas64_.DLL (unknown line)
in expression starting at REPL[4]:1

```

(trace form 1.6 beta)

---

<div class="post-metadata">

**Author:** ![jhat](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/jhat/32/21238_2.png) [@jhat](https://discourse.julialang.org/u/jhat)\
**Post date:** [January 21, 2021, 10:48pm UTC](https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748/4 "2021-01-21T22:48:34Z")

</div>

Thanks. I see now: [EXCEPTION\_ACCESS\_VIOLATION in julia 1.5 · Issue #36976 · JuliaLang/julia · GitHub](https://github.com/JuliaLang/julia/issues/36976)

---

<div class="post-metadata">

**Author:** ![mkitti](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mkitti/32/12459_2.png) [@mkitti](https://discourse.julialang.org/u/mkitti)\
**Post date:** [January 22, 2021, 12:38am UTC](https://discourse.julialang.org/t/dot-abruptly-ends-julia-session/53748/5 "2021-01-22T00:38:33Z")

</div>

Reproduced on Julia 1.5.0 and Julia 1.6-beta1

```julia
   _ _ _(_)_ | Documentation: https://docs.julialang.org
  (_) | (_) (_) |
   _ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` | |
  | | |_| | | | (_| | | Version 1.5.0 (2020-08-01)
 _/ |\ __'_|_|_|\__'_| | Official https://julialang.org/ release
|__/ |

julia> using Random: seed!

julia> using LinearAlgebra

julia> let ii = 15
           @show ii, 2^ii
           dot( randn(ComplexF64,2^ii),randn(ComplexF64,2^ii) );
       end
(ii, 2 ^ ii) = (15, 32768)

Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1a4c7280 -- at 0x1a4c7280 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1a4c7280 -- unknown function (ip: 000000001A4C7280)
in expression starting at REPL[3]:1
in expression starting at REPL[3]:1
 0)
  reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception:
PS C:\Users\kittisopikulm> julia16
               _
   _ _ _(_)_ | Documentation: https://docs.julialang.org
  (_) | (_) (_) |
   _ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` | |
  | | |_| | | | (_| | | Version 1.6.0-beta1.0 (2021-01-08)
 _/ |\ __'_|_|_|\__'_| | release-1.6/b84990e1ac (fork: 107 commits, 43 days)
|__/ |

julia> using LinearAlgebra

julia> let ii = 15
           @show ii, 2^ii
           dot( randn(ComplexF64,2^ii),randn(ComplexF64,2^ii) );
       end
(ii, 2 ^ ii) = (15, 32768)

Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception:
Please submit a bug report with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- at 0x1fd808e0 -- OLATION with steps to reproduce this fault, and any error messages that follow (in their entirety). Thanks.
Exception: EXCEPTION_ACCESS_VIOLATION at 0x1fd808e0 -- zdot_compute at C:\Users\kittisopikulm\AppData\Local\Programs\Julia-1.6.0-beta1\bin\libopenblas64_.DLL (unknown line)
in expression starting at REPL[2]:1
zdot_compute at C:\Users\kittisopikulm\AppData\Local\Programs\Julia-1.6.0-beta1\bin\libopenblas64_.DLL (unknown line)

```

```julia
julia> versioninfo()
Julia Version 1.6.0-beta1.0
Commit b84990e1ac (2021-01-08 12:42 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-11.0.0 (ORCJIT, skylake)

```