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flintlib / arb

Arb has been merged into FLINT -- use https://github.com/flintlib/flint/ instead
http://arblib.org/
GNU Lesser General Public License v2.1
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windowed zeta zeros function could use better parameter heuristics #348

Closed p15-git-acc closed 2 years ago

p15-git-acc commented 3 years ago

see for example https://github.com/fredrik-johansson/arb/issues/335#issuecomment-701663788

rudolph-git-acc commented 3 years ago

With the improved K=K/2 timings, n=1e24 was successfully completed in only 14 hours (prec=256, 64 threads/32 cores).

image

At 1e24 the number of zeros found starts to slightly decline, so K/2 could run out of steam here (or it is the prec-setting). EDIT: at 1e25 it seems to pick up its pace and the number of zeros isolated increases again.

zeros10e24.txt zeros10e25.txt

Note that just doubling B only had adverse effects, so additional tuning of the other parameters seems required for this case.