Missing libarpack on Mac M1

General Usage
1

My friend has a new toy, Mac M1, and wants to run one of the codes that I wrote for him.
Arpack is needed for eigs, but the machine chokes on it: missing libarpack.
Julia 1.8…

Is there a trick, or are we out of luck?

2

Works for me:

(@v1.8) pkg> activate --temp
  Activating new project at `/var/folders/tz/_3rffzvd1hs3rrxssmntjnpw0000gn/T/jl_LzWuNi`

(jl_LzWuNi) pkg> add Arpack
    Updating registry at `~/.julia/registries/General`
    Updating git-repo `https://github.com/JuliaRegistries/General`
   Resolving package versions...
   Installed Arpack_jll ─ v3.5.1+1
   Installed Arpack ───── v0.5.3
  Downloaded artifact: Arpack
    Updating `/private/var/folders/tz/_3rffzvd1hs3rrxssmntjnpw0000gn/T/jl_LzWuNi/Project.toml`
  [7d9fca2a] + Arpack v0.5.3
    Updating `/private/var/folders/tz/_3rffzvd1hs3rrxssmntjnpw0000gn/T/jl_LzWuNi/Manifest.toml`
  [7d9fca2a] + Arpack v0.5.3
  [692b3bcd] + JLLWrappers v1.4.1
  [21216c6a] + Preferences v1.3.0
  [68821587] + Arpack_jll v3.5.1+1
  [0dad84c5] + ArgTools v1.1.1
  [56f22d72] + Artifacts
  [2a0f44e3] + Base64
  [ade2ca70] + Dates
  [f43a241f] + Downloads v1.6.0
  [7b1f6079] + FileWatching
  [b77e0a4c] + InteractiveUtils
  [b27032c2] + LibCURL v0.6.3
  [76f85450] + LibGit2
  [8f399da3] + Libdl
  [37e2e46d] + LinearAlgebra
  [56ddb016] + Logging
  [d6f4376e] + Markdown
  [ca575930] + NetworkOptions v1.2.0
  [44cfe95a] + Pkg v1.8.0
  [de0858da] + Printf
  [3fa0cd96] + REPL
  [9a3f8284] + Random
  [ea8e919c] + SHA v0.7.0
  [9e88b42a] + Serialization
  [6462fe0b] + Sockets
  [fa267f1f] + TOML v1.0.0
  [a4e569a6] + Tar v1.10.0
  [cf7118a7] + UUIDs
  [4ec0a83e] + Unicode
  [e66e0078] + CompilerSupportLibraries_jll v0.5.2+0
  [deac9b47] + LibCURL_jll v7.84.0+0
  [29816b5a] + LibSSH2_jll v1.10.2+0
  [c8ffd9c3] + MbedTLS_jll v2.28.0+0
  [14a3606d] + MozillaCACerts_jll v2022.2.1
  [4536629a] + OpenBLAS_jll v0.3.20+0
  [83775a58] + Zlib_jll v1.2.12+3
  [8e850b90] + libblastrampoline_jll v5.1.1+0
  [8e850ede] + nghttp2_jll v1.48.0+0
  [3f19e933] + p7zip_jll v17.4.0+0
Precompiling project...
  2 dependencies successfully precompiled in 1 seconds. 8 already precompiled.

julia> using Arpack

julia> A
3×3 Matrix{Float64}:
 0.257184  1.55349  0.204182
 1.55349   1.97561  1.01386
 0.204182  1.01386  1.74617

julia> eigs(A)
┌ Warning: Adjusting nev from 6 to 2
└ @ Arpack ~/.julia/packages/Arpack/pLziT/src/Arpack.jl:92
([3.4584304883312194, 1.2318554667344084], [0.40342795550273014 -0.38622194952000827; 0.7654425548477087 -0.35425650520373275; 0.5013417795746727 0.8516659757380245], 2, 1, 3, [0.0, 0.0, 0.0])

julia> versioninfo()
Julia Version 1.8.0-rc4
Commit 7853436ccd7 (2022-08-08 07:55 UTC)
Platform Info:
  OS: macOS (arm64-apple-darwin21.5.0)
  CPU: 8 × Apple M1
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-13.0.1 (ORCJIT, apple-m1)
  Threads: 1 on 4 virtual cores

Do you have a reproducible example?

1 Like
3

It turned out to be a package which held back Arpack. Thanks for checking.

1 Like