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Hi MKL team,
If I am not mistaken this originated from an issue, https://github.com/scipy/scipy/issues/11709, we have on SciPy wrappers. In our codebase we wrapped ?heevr in a way such that when jobz parameter is not "V" we return an empty isuppz array after following the LAPACK reference contract. We also tested this in various platforms using OpenBLAS. After having confirmed test cases we merged into our codebase. But as above, a number of users immediately started getting hit by this behavior.
As far as I could dig in, this relates to how ?stemr interacts with isuppz array depending on the parameters supplied. However as demonstrated above isuppz is referenced regardless. Could you please advice us how we should proceed?
Best,
ilhan
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Thank you for bringing this to our attention, and for the detailed reproducers! We will take a look into this and let you know the results.
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Hi there,
I'd like to kindly ping this issue just in case it fell down between the todo list cracks.
Best,
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Ilhan,
Yes, we investigated and root-caused the issue.
The fix of the issue is planning to be released the next update of mkl 2020 ( update 2). We will keep you informed of the status of this case.
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and plus one more thing, which probably will be useful - as a workaround the problem, you may try to use ILP64 API instead of lp64.
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the fix of the issue available in MKL 2020 update 2 which has been released and available for download.
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Thank you Gennady F.
Do you mind elaborating what the problem was or how long isuppz array we should allocate to be on the safe side?
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