[GAP Forum] Steiner systems of Mathieu Group M12

[PAUL HJELMSTAD]

I have a Macintosh and it's not doing the command line options properly but I'm working with M 11 now and that one does go through --- however it only lists the total which is 2520 ---i need it  to actually list all the sets of sets...Or something

Get Outlook for Android<https://aka.ms/ghei36>


________________________________
From: Brandon Enright <bmenrigh at brandonenright.net>
Sent: Friday, January 13, 2017 6:20:39 PM
To: PAUL HJELMSTAD
Cc: Dmitrii Pasechnik; forum at mail.gap-system.org; bmenrigh at brandonenright.net
Subject: Re: [GAP Forum] Steiner systems of Mathieu Group M12

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On Fri, 13 Jan 2017 23:49:05 +0000
PAUL HJELMSTAD <phjelmstad at msn.com> wrote:

> Looks like I don't have enough memory --- I can do everything except
> the last step

I tested GAP on my system with:

GAP 4.8.6, 12-Nov-2016, build of 2016-12-21 01:57:40 (UTC)
Architecture: x86_64-pc-linux-gnu-x86_64-pc-linux-gnu-gcc-default64)

By limiting memory with -K I was able to do the full calculation in 647
milliseconds with only 160 megabytes of memory.  I tested with 128
megabytes and GAP hit the memory limit.

Presumably 64 bit GAP uses more memory than 32bit GAP (because of
pointer size differences).  If you're using a 32bit build it wouldn't
surprise me if you could do the calculation in only 128M for the
workspace.

In any case, this calculation is tiny.  Just give GAP more memory.

Brandon

-----BEGIN PGP SIGNATURE-----

iEYEARECAAYFAlh5btcACgkQqaGPzAsl94JV7ACghqc0rxwvgsMv9u8seWulMRzx
7SkAn3YG/aE3Gy3wivNBcmmx1BTaV2sM
=i5uH
-----END PGP SIGNATURE-----