Compact legendre polynomials #164
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(convert to draft for the moment ==> it is fnished but we should first merge the other PR, then rebase and review) |
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Legendre polynomials don't need to be stored zero-padded, we can just concatenate them with proper zero padding.
E.g. on tco2559, this saves up to almost 40GB per rank (used to be 64 GB, now it is 26 GB). Initially, we did this for Leonardo, because legendre coefficients used almost the whole device memory.