Comments (8)
xrq-phys
commented on May 24, 2024
1
Sorry I made a mistake it is indeed a libblis_jll problem now fixed in v0.9.0.
I'll check & upgrade dependencies. Thanks for reporting!
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xrq-phys
commented on May 24, 2024
It seems to be a x86_64 mac with latest v0.8.1+2 binary.
I'd like to know more about the CPU you are using since the same binary is working without this problem under M1+Rosetta-2:
| | |_| | | | (_| | | Version 1.6.1 (2021-04-23)
_/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release
|__/ |
julia> using BLIS
[ Info: blis_jll yields BLIS installation: /Users/rubidium/.julia-ia/artifacts/567e1b2234ebc730bc16e33871144bf9b561f1fa/lib/libblis.4.0.0.dylib.
julia> n = 1000; a = fill(1., n, n); a*a;
julia>
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jd-foster
commented on May 24, 2024
Interestingly, I can't reproduce this on the same machine under v1.6.1, only for v1.7.1.
(Also, not sure if relevant, but Sys.MACHINE in v1.6.1 gives x86_64-apple-darwin18.7.0 while Sys.MACHINE in v1.7.1 gives x86_64-apple-darwin19.5.0. I guess these are the versions that the binaries were built under. Theuname of my machine is Darwin Kernel Version 19.6.0.)
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jd-foster
commented on May 24, 2024
It seems to be a x86_64 mac with latest
v0.8.1+2binary.
Yes, that's right.
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fangzhou-xie
commented on May 24, 2024
I am on x86_64 (Intel) macOS with julia 1.7.2 here. And I have the same error:
_
_ _ _(_)_ | Documentation: https://docs.julialang.org
(_) | (_) (_) |
_ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
| | | | | | |/ _` | |
| | |_| | | | (_| | | Version 1.7.2 (2022-02-06)
_/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release
|__/ |
julia> using BLIS
[ Info: blis_jll yields BLIS installation: /Users/xiefangzhou/.julia/artifacts/cc15acec1f5320a9559756c8186ce2df4313bbc6/lib/libblis.4.0.0.dylib.
julia> A = randn(1000, 1000);
julia> A * A;
signal (10): Bus error: 10
in expression starting at REPL[3]:1
jl_system_image_data at /Applications/Julia-1.7.app/Contents/Resources/julia/lib/julia/sys.dylib (unknown line)
Allocations: 4813021 (Pool: 4812021; Big: 1000); GC: 5
zsh: bus error julia
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xrq-phys
commented on May 24, 2024
Finally got access to my x86 mac in office. I'm now able to reproduce the error. It seems a problem within this package. Simply setting BLIS as BLAS provider via lbt_forward is okay. The problem is in the extended API:
--- /Applications » BLIS_JR_NT=4 julia
| | |_| | | | (_| | | Version 1.7.2 (2022-02-06)
_/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release
|__/ |
julia> using LinearAlgebra, BenchmarkTools, blis_jll
julia> @benchmark a * a setup=(n = 1000; a = fill(1., n, n);)
BenchmarkTools.Trial: 336 samples with 1 evaluation.
Range (min … max): 12.276 ms … 63.016 ms ┊ GC (min … max): 0.00% … 80.32%
Time (median): 13.018 ms ┊ GC (median): 0.00%
Time (mean ± σ): 14.019 ms ± 3.840 ms ┊ GC (mean ± σ): 7.96% ± 9.72%
...
Memory estimate: 7.63 MiB, allocs estimate: 2.
julia> BLAS.lbt_forward(blis, clear=true);
julia> @benchmark a * a setup=(n = 1000; a = fill(1., n, n);)
BenchmarkTools.Trial: 321 samples with 1 evaluation.
Range (min … max): 12.948 ms … 120.029 ms ┊ GC (min … max): 0.00% … 0.00%
Time (median): 13.287 ms ┊ GC (median): 0.00%
Time (mean ± σ): 14.662 ms ± 7.168 ms ┊ GC (mean ± σ): 6.60% ± 8.65%
...
Memory estimate: 7.63 MiB, allocs estimate: 2.
julia> ENV["BLIS_JR_NT"] = 1
1
julia> @benchmark a * a setup=(n = 1000; a = fill(1., n, n);) # Performance is affected by BLIS_JR_NT, indicating BLIS' indeed called here.
BenchmarkTools.Trial: 122 samples with 1 evaluation.
Range (min … max): 13.242 ms … 303.030 ms ┊ GC (min … max): 0.00% … 1.42%
Time (median): 22.673 ms ┊ GC (median): 0.00%
Time (mean ± σ): 40.469 ms ± 47.515 ms ┊ GC (mean ± σ): 4.27% ± 10.51%
...
Memory estimate: 7.63 MiB, allocs estimate: 2.
julia> using BLIS
[ Info: blis_jll yields BLIS installation: $HOME/.julia/artifacts/cc15acec1f5320a9559756c8186ce2df4313bbc6/lib/libblis.4.0.0.dylib.
julia> @benchmark a * a setup=(n = 1000; a = fill(1., n, n);)
[1] 5656 bus error BLIS_JR_NT=4 julia
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jd-foster
commented on May 24, 2024
Thanks for determining the source of the issue.
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fangzhou-xie
commented on May 24, 2024
Thanks for investigating into this issue! I discovered later that this issue was also on my Linux (Fedora 35) machine.
_
_ _ _(_)_ | Documentation: https://docs.julialang.org
(_) | (_) (_) |
_ _ _| |_ __ _ | Type "?" for help, "]?" for Pkg help.
| | | | | | |/ _` | |
| | |_| | | | (_| | | Version 1.7.2 (2022-02-06)
_/ |\__'_|_|_|\__'_| | Fedora 35 build
|__/ |
julia> using BLIS
[ Info: blis_jll yields BLIS installation: ~/.julia/artifacts/c678808668b42fcfc33cc9ee184e6dd4049378b0/lib/libblis.so.
julia> A = randn(1000, 1000);
julia> A * A;
signal (11): Segmentation fault
in expression starting at REPL[3]:1
jl_system_image_data at /usr/lib64/julia/sys.so (unknown line)
Allocations: 3548382 (Pool: 3547889; Big: 493); GC: 3
Segmentation fault (core dumped)
I would believe that this is the same issue as on macOS and the fix would work on both macOS and Linux?
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