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Error on LibXSMM cpu kernels
See original GitHub issue🐛 Bug
User met errors raised at https://github.com/dmlc/dgl/blob/983a4fdd1981a6eaa4a3343ec4116739e9f97dfa/src/array/cpu/spmm_blocking_libxsmm.h#L267
"Failed to generate libxsmm kernel for the SpMM operation!"
We should not raised the error but fallback to the naive kernel.
User’s CPU model: Xeon® CPU E5-2695 v2 @ 2.40GHz This is an old CPU produced in 2013, which might not be supported by LibXSMM now. https://ark.intel.com/content/www/us/en/ark/products/75281/intel-xeon-processor-e52695-v2-30m-cache-2-40-ghz.html
Possible Solution
Catch error at https://github.com/dmlc/dgl/blob/983a4fdd1981a6eaa4a3343ec4116739e9f97dfa/src/array/cpu/spmm.h#L144, and run the naive kernel if error detected
Issue Analytics
- State:
- Created 2 years ago
- Comments:10 (2 by maintainers)
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Feel free to reopen if any further questions.
HI, @sixtyfive , there is already a PR for fixing this issue #4455
The reason of this error is Libxsmm is not supported in some old versions of CPU. As it is not easy to pre-check if the lib is supported in current CPU, we provide an API to disable it at runtime:
dgl.use_libxsmm(bool)There is a prompt the first time failed using this lib, and you can use the API to disable it for next running.