a 4.17% improvement...

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Alex Rhatushnyak

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Nov 6, 2017, 12:33:36 PM11/6/17
to Hutter Prize
... is downloadable from here and here.
It is the last official submission this year.

I am not releasing any source code this year, but
for those curious how much LSTM costs, here is a version without LSTM.
It could qualify for the prize if the size of executable was smaller. 
~1.4% bigger compressed size, but speed is about twice higher, isn't it?
Like the main executable with a 4.17% improvement,
it is a single-threaded application, built with GNU C++ and -march=corei7.

James Bowery

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Nov 12, 2017, 1:07:02 AM11/12/17
to Hutter Prize

Verified.

$ /usr/bin/time -f "\t%E real,\t%U user,\t%S sys,\t%M memory" ./phda compressed_enwik8 enwik8.out
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 
Done in 15864.853 seconds
4:25:53 real, 15321.85 user, 543.34 sys, 1048312 memory
$ md5sum enwik8.out 
a1fa5ffddb56f4953e226637dabbb36a  enwik8.out

PS: Running the mswindows version resulted in an illegal instruction crash on my system.
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