[GH-ISSUE #142] undefined symbol: _ZN3c106detail14torchCheckFailEPKcS2_jRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE #81

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opened 2026-10-26 21:12:03 +00:00 by bsakaguchi · 2 comments

bsakaguchi commented

2026-10-26 21:12:03 +00:00

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Originally created by @harleyszhang on GitHub (Jul 28, 2025).
Original GitHub issue: https://github.com/deepseek-ai/DeepGEMM/issues/142

gcc version: 11.4.0
python version: 3.10
cuda version: 12.8
h100

when i run 'python setup.py install` success, import deep-gemm, error is:

import deep_gemm_cpp ImportError: /opt/conda/lib/python3.10/site-packages/deep_gemm-2.0.0+1876566-py3.10-linux-x86_64.egg/deep_gemm_cpp.cpython-310-x86_64-linux-gnu.so: undefined symbol: _ZN3c106detail14torchCheckFailEPKcS2_jRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

Originally created by @harleyszhang on GitHub (Jul 28, 2025). Original GitHub issue: https://github.com/deepseek-ai/DeepGEMM/issues/142 gcc version: 11.4.0 python version: 3.10 cuda version: 12.8 h100 when i run 'python setup.py install` success, import deep-gemm, error is: ` import deep_gemm_cpp ImportError: /opt/conda/lib/python3.10/site-packages/deep_gemm-2.0.0+1876566-py3.10-linux-x86_64.egg/deep_gemm_cpp.cpython-310-x86_64-linux-gnu.so: undefined symbol: _ZN3c106detail14torchCheckFailEPKcS2_jRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE `

bsakaguchi commented

2026-10-26 21:12:04 +00:00

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@LyricZhao commented on GitHub (Jul 30, 2025):

cc @LJC00118

@LyricZhao commented on GitHub (Jul 30, 2025): cc @LJC00118

bsakaguchi commented

2026-10-26 21:12:05 +00:00

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@ankutalev commented on GitHub (Aug 1, 2025):

Patch

-cxx_flags = ['-std=c++20', '-O3', '-fPIC', '-Wno-psabi']
+cxx_flags = ['-std=c++20', '-O3', '-fPIC', '-Wno-psabi', '-D_GLIBCXX_USE_CXX11_ABI=0']

Fixed issue for me

@ankutalev commented on GitHub (Aug 1, 2025): Patch ``` -cxx_flags = ['-std=c++20', '-O3', '-fPIC', '-Wno-psabi'] +cxx_flags = ['-std=c++20', '-O3', '-fPIC', '-Wno-psabi', '-D_GLIBCXX_USE_CXX11_ABI=0'] ``` Fixed issue for me

bsakaguchi referenced this issue

2026-10-26 21:15:11 +00:00

[PR #81] [MERGED] Performance: BlockTile 256x128 optimizations enable 1500+ TF FP8 #237