I've been carrying out ECM for some time now on small exponents (under
40,000) and I'm curious about the amount of memory that it uses.
According to readme.txt, the minimum memory required is 192 times the FFT
size. For the exponents I'm looking at, I suspect that the FFT size is of
order a kilobyte (BTW, can I look the FFT sizes and breakpoints up
somewhere?) and so the minimum memory required is less than 1MB.
However, I use mprime with the available memory set to 24MB and I've
noticed that ECM uses almost all of this. I'd like to know why ECM is
using so much memory - does it enable it to run faster? And how much
memory would ECM 'like' to use if it was available?
Regards,
Steve
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