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View Code? Open in Web Editor NEWBLAS operations for matrices in tile low-rank format
License: BSD 3-Clause "New" or "Revised" License
BLAS operations for matrices in tile low-rank format
License: BSD 3-Clause "New" or "Revised" License
The flop counts returned from the flop_counts
function appear to be incorrect for GEQRF (op == 'q'
) and POTRF (op == 'c'
). The correct formulas from LAPACK Working Note 41 are:
The current formula for GEQRF in src/misc/descutil/flop_counts.c
appears to have been mistakenly copied from GERQF (RQ factorization instead of QR) in LAWN41, while that for POTRF simply has an incorrect sign and was presumably a typo.
Aside, my understanding is that the SVD is computed using iterative method, so the flops are input-dependent; how did you determine the current 22n^3 formula?
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