Since C3C64 is clearly the winner, in this section we only compare it with its 32-bit version, denoted C3C32. 6_fig:PerfectClub_convex_hull_dimension_C3C64_C3C32 illustrates these comparisons for PerfectClub convex hull database. C3C32 is faster than C3C64 for percent of all tests with three times faster for total run time of all tests, whereas C3C64 is faster for only percent of tests. SPEC95 convex hull database gives us similar results.
6_tab:SPEC95_convex_hull_64_32_exception shows that for the set of SPEC95 convex hull database, the partial factorization implementations, there are a few differences ( to exceptions with tests). For the PerfectClub, there are no differences with tests. Our conclusion for this part is that 64-bit computation is preferable to 32-bit computation.