[GAP Forum] the GrpConst package and its usage

[Walter Becker]

I am using the GrpConst package to determine the number of groups of certain orders, and it seems to take a long time for some orders, e.g., consider the following family of groups of order 8*p^3:

 

gap> p:=3;
3
gap> ConstructAllGroups(8*p^3);;time;
8969
gap> p:=5;
5
gap> ConstructAllGroups(8*p^3);;time;
20203
gap> p:=7;
7
gap> ConstructAllGroups(8*p^3);;time;
21297
gap> p:=11;
11
gap> ConstructAllGroups(8*p^3);;time;
52688
gap> p:=13;
13
gap> ConstructAllGroups(8*p^3);;time;

 

The one for p=13 do not complete in a half hour or so of running time.

The corresponding one for p=17 did not complete in running for several hours? 

 

Any suggestions on getting these numbers. Note I realize the groups are not listed here, this run was made to just see what kind of running times one might expect for these orders and by extrapolation to the one of order 8*p^3 for p=17 which is the one realldesired.

 

Thanks

 

 

Walter Becker

 

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