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Old 2021-09-01, 03:02   #3097
charybdis's Avatar
Apr 2020

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I'd make one small change for practical purposes, which is to set rels_wanted artificially high (say 4G rather than 3G) as the intention is presumably to run msieve filtering. We don't want CADO filtering to be triggered, for a couple of reasons:

1. There is a bug whereby sieving with adjust_strategy = 2 can produce a relation with a (square) composite factor. This is extremely rare, but in 3G relations there's a decent chance it will happen, and unlike msieve, I don't think CADO filtering handles it well.
2. Even if this doesn't happen, CADO filtering on a job this big likely requires hundreds of GB of memory.

Setting a large value of rels_wanted has the added benefit that ETA values are more accurate early in the sieving while the yield is high
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