System Resources

• O(N3.5)CPU and Disk

• limited by disk capacity

• I/O bound

• integrals computed once

• O(N3.5)CPU

• N4/8 - N4/4 memory

• single CPU

• memory needed

- 100 basis = 100 MB

- 200 basis = 200 MB

- 300 basis = 8100MB

• integrals computed once

• fast

• O(N2.3)CPU

• integrals computed

• many times

• modest memory

• large systems

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