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$ perl createblinker.pl 500000 -900000 100 >x.tmp 2>y.tmp
$ g++ -o tbench1 -std=c++11 -Wall -O3 tbench1.cpp
...
user  0m3.242s
sys   0m0.233s

( $sum |= substr $all, $_ ) =~ tr/1357/2468/ for
  1, 2, $w, $w + 2, ($w << 1), ($w << 1) + 1, ($w << 1) + 2; # other 7
+ neighbors

$ time /opt/perl-5.26.0/bin/perl -I. tbench1.pl x.tmp 2
cell count at start = 1500000
...
user  0m3.203s
sys   0m0.205s