Andrew Walker on Thu, 06 Jun 2019 09:02:55 +0200

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Memory usage for zeta()

Using one of the latest 64 bit binaries for Windows:

                   GP/PARI CALCULATOR Version 2.12.0 (alpha)
          amd64 running mingw (x86-64/GMP-6.1.2 kernel) 64-bit version
            compiled: Jun  3 2019, gcc version 6.3.0 20170516 (GCC)
                            threading engine: single
               (readline not compiled in, extended help enabled)

                     Copyright (C) 2000-2019 The PARI Group

I've found that the memory usage for zeta() is a lot bigger than the previous version I've been using,

gp64-2-11-1.exe (also 64 bit) from 21 Nov last year.

Using the default precision, try zeta(0.5+100000.0*I) then at increasing values of the imaginary
part, looking at memory usage in the task manager.

For the latest version zeta(0.5+300000*.0*I) the usage shown gets to over 294 Mb whereas for
the earlier one it is just over 20 Mb

Is this due to the recent changes related to Bernoulli numbers?