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StackOverflowError: vsub(a::UInt128, b::UInt128) #53

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ranocha opened this issue Apr 17, 2021 · 1 comment
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StackOverflowError: vsub(a::UInt128, b::UInt128) #53

ranocha opened this issue Apr 17, 2021 · 1 comment

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@ranocha
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ranocha commented Apr 17, 2021

I observed the following error in some recent CI tests using GitHub actions

  Got exception outside of a @test
  LoadError: StackOverflowError:
  Stacktrace:
   [1] vsub(a::UInt128, b::UInt128) (repeats 79984 times)
     @ VectorizationBase ~/.julia/packages/VectorizationBase/czbgP/src/llvm_intrin/binary_ops.jl:90

We do not use VectorizationBase directly, only LoopVectorization. Sadly, I can't reproduce this error locally using the same test set. Nevertheless,

julia> using Pkg; Pkg.activate(temp=true); Pkg.add("VectorizationBase")
[...]

  [3d5dd08c] + VectorizationBase v0.19.27
[...]

julia> using VectorizationBase

julia> VectorizationBase.vsub(UInt128(1), UInt128(5))
ERROR: StackOverflowError:
Stacktrace:
 [1] vsub(a::UInt128, b::UInt128) (repeats 79984 times)
   @ VectorizationBase ~/.julia/packages/VectorizationBase/czbgP/src/llvm_intrin/binary_ops.jl:90
@ranocha ranocha mentioned this issue Apr 17, 2021
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ranocha added a commit to ranocha/LoopVectorization.jl that referenced this issue Apr 24, 2021
@ranocha
add Trixi to users of LoopVectorization
240a06d 
We're already using LoopVectorization to get some really nice improvements in our hyperbolic PDE framework. We will use LoopVectorization even more and also other great packages of yours like CheapThreads and StrideArrays once JuliaSIMD#238 (and maybe JuliaSIMD/VectorizationBase.jl#53) are resolved.
@ranocha ranocha mentioned this issue Apr 24, 2021
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@chriselrod
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Fixed and tested; the problem was in constructing very large masks.

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@chriselrod @ranocha