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RandomComplexes :: testTimeForLLLonSyzygies

testTimeForLLLonSyzygies -- test timing for LLL on syzygies

Synopsis

Description

We randomly choose an r × 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}, .00108265, .000626739)

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

o4 = ({50, 2.30853e454, 98}, .00320511, .0289004)

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

o5 = {{.00349866, .00971695}, {.00349278, .00349322}, {.0243444, .00570144}, {.00383117, .00823685}, {.00387002, .0106629},
     ----------------------------------------------------------------------------------------------------------------------------
     {.00476188, .0101515}, {.00328248, .00636998}, {.0122532, .00652142}, {.00331244, .00441132}, {.00440108, .00663367}}

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

o6 = .00670481120000001

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

o7 = .00718993039999999

o7 : RR (of precision 53)

Ways to use testTimeForLLLonSyzygies :