fakeTopoMultiSocketDualSocketPerNumaHT,
			mustParseCPUSet(t, "0-40,42-49,51-68,71-79"),
			[]int{},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.description, func(t *testing.T) {
			acc := newCPUAccumulator(tc.topo, tc.availableCPUs, 0)
			result := acc.freeSockets()
			sort.Ints(result)
			if !reflect.DeepEqual(result, tc.expect) {
				t.Errorf("expected %v to equal %v", result, tc.expect)

			}
		})
	}

	// cardinality equal to the total number of CPUs to accumulate.
	result cpuset.CPUSet

	numaOrSocketsFirst numaOrSocketsFirstFuncs
}

func newCPUAccumulator(topo *topology.CPUTopology, availableCPUs cpuset.CPUSet, numCPUs int) *cpuAccumulator {
	acc := &cpuAccumulator{
		topo:          topo,
		details:       topo.CPUDetails.KeepOnly(availableCPUs),
		numCPUsNeeded: numCPUs,