largest number: Just sort. Use a_b and b_a to decide which comes at first wiggle sort: sort pair by pair wiggle sort II: Quick select algorithm to find the kth largest element in array. Can be used to find median. Remember to use three way partition and index mapping. Stack stair ...
1a). Improvements added to PETSc DMPLEX class were tested up to 214 billion elements (7th order, 512 grid points per element) on 3,000 nodes of MareNostrum-4 supercomputer and were distributed to the community in the PETSc 3.13 version release. Table 4. Audit-driven optimisation activities...