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testTimeForLLLonSyzygies -- test timing for LLL on syzygies

Synopsis

Description

We randomly choose an $r \times\ n$ matrix A over ZZ with entries up to the given Height, and take the time to compute B=ker A and an LLL basis of B.

i1 : setRandomSeed "nice example 2";
i2 : r=10,n=20

o2 = (10, 20)

o2 : Sequence
i3 : (m,t1,t2)=testTimeForLLLonSyzygies(r,n,Height=>11)

o3 = ({5, 2.91596e52, 9}, .00138046, 0)

o3 : Sequence
i4 : (m,t1,t2)=testTimeForLLLonSyzygies(15,30,Height=>100)

o4 = ({50, 2.30853e454, 98}, .00618369, .0388145)

o4 : Sequence
i5 : L=apply(10,c->(testTimeForLLLonSyzygies(15,30))_{1,2})

o5 = {{.00415423, .0129743}, {.00772311, .0045526}, {.00327175, .00800128},
     ------------------------------------------------------------------------
     {.00449345, .012301}, {.00573879, .0131784}, {.00740736, .0112207},
     ------------------------------------------------------------------------
     {.00400166, .00799792}, {.00798013, .00399967}, {.00800154, .00399867},
     ------------------------------------------------------------------------
     {.00800417, .00799329}}

o5 : List
i6 : 1/10*sum(L,t->t_0)

o6 = .006077619700000004

o6 : RR (of precision 53)
i7 : 1/10*sum(L,t->t_1)

o7 = .008621774699999963

o7 : RR (of precision 53)

Ways to use testTimeForLLLonSyzygies:

For the programmer

The object testTimeForLLLonSyzygies is a method function with options.