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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}, .00178213, .000895109)

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

o4 = ({50, 2.30853e454, 98}, .005293, .035156)

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

o5 = {{.0374158, .0123128}, {.00541651, .0041624}, {.00600867, .00665031},
     ------------------------------------------------------------------------
     {.00614679, .00989463}, {.0207378, .0132515}, {.00668051, .0123038},
     ------------------------------------------------------------------------
     {.00586321, .00805638}, {.00599986, .00753136}, {.00502968, .0053031},
     ------------------------------------------------------------------------
     {.0178435, .00850764}}

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

o6 = .0117142355

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

o7 = .00879738750000002

o7 : RR (of precision 53)

Ways to use testTimeForLLLonSyzygies :

For the programmer

The object testTimeForLLLonSyzygies is a method function with options.