[seqfan] Re: As much as I hate "base" sequences...

[David Wilson]

Never had much luck with CPAN on Windows.

> -----Original Message-----
> From: SeqFan [mailto:seqfan-bounces at list.seqfan.eu] On Behalf Of
> hv at crypt.org
> Sent: Wednesday, January 29, 2014 3:21 AM
> To: Sequence Fanatics Discussion list
> Subject: [seqfan] Re: As much as I hate "base" sequences...
> 
> The speed improvements to the perl module Math::GMP have now been
> released in v2.07: https://metacpan.org/pod/Math::GMP
> 
> Hugo
> 
> Earlier I wrote:
> :"David Wilson" <davidwwilson at comcast.net> wrote:
> ::I don't have a real arbitrary precision arithmetic package, so I am
using
> ::ActivePerl Math::Bignum, which is somewhat slow.
> :
> :Math::Bignum is pretty awful speed-wise for anything intensive.
Math::Pari
> :and Math::GMP are both a great deal faster, if either of those is
available :to
> you.
> :
> :I've recently been making speed improvements to Math::GMP, reducing
> :the perl overhead of operations by about 3x so far (which gets it closer
:to
> Math::Pari speed), but that's unlikely to reach a release for at least :a
couple
> of months; if you're in a position to compile it yourself, :I'd be happy
to make
> it available somewhere earlier.
> :
> :If they are not available to you (because you don't have a compiler, :and
> ActiveState doesn't build them), I might be able to encourage them :to
> provide a build - I know several of the core perl developers that :work
there,
> and nearly became one myself a number of years ago.
> :
> :Here's a benchmark I did recently for C<< die unless ($a % $b) == 3 >>
> :where $a == 3, $b == 5 and both variables are:
> :  bb => Math::BigInt
> :  gg => Math::GMP
> :  hh => my improved Math::GMP
> :  pp => Math::Pari
> :  ss => simple perl scalar
> :
> :        Rate      bb      gg      hh      pp      ss
> :bb    8967/s      --    -84%    -93%    -97%   -100%
> :gg   54612/s    509%      --    -59%    -82%    -99%
> :hh  132741/s   1380%    143%      --    -57%    -99%
> :pp  309688/s   3354%    467%    133%      --    -97%
> :ss 9410297/s 104844%  17131%   6989%   2939%      --
> :
> :Hugo
> 
> _______________________________________________
> 
> Seqfan Mailing list - http://list.seqfan.eu/