FIGURE C-6 Frequency of ARIF capital cost sources of support. (The fraction of ARIF supported by various funding sources. For example, institutions contributed to the capital costs of 48% of the ARIF reported.)

OPERATIONS AND MAINTENANCE COSTS

Of the instruments detailed in survey charts, 20 had estimates of capital cost, siting cost, and estimated operation and maintenance (O&M) cost. Figure C-7 shows the reported O&M costs as a function of capital costs.

The survey did not define O&M costs, nor did it request that institutions do so. It is likely that most institutions are going by the guidelines of OMB Circular A-21, which defines operations and maintenance costs strictly as the costs associated with housing and maintaining an instrument, including utilities. The one clear exception was Boston University, which reported that the annual O&M costs of its IBM supercomputer refer to maintenance but not power. Some institutions included the costs of service contracts and personnel salaries in their estimates of O&M, and others did not.

ANTICIPATED ARIF NEEDS OF INSTITUTIONS

Many institutions, whether or not they had ARIF, expressed a desire for ARIF. Some detailed ARIF had been proposed but still lacked support. Figure C-8 and the text following it detail the ARIF needs expressed by institutions. Most of these



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