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PPA has started buying hardware for the common good across the directorate. This was initiated in 2012 with the first purchase of 185 "Bullet" nodes in early 2013. These are infinbandinfiniband-connected, with Lustre storage. Historically the cluster was provisioned largely for BABAR, with other experiments riding its coattails. Currently there are three projects of comparable batch allocation size: BABAR, ATLAS and Fermi. BABAR stopped taking data in 2009 and it is presumed that their usage will tail off; Fermi is in routine operations with modest near real time needs and a 1.5-2 year program of intensive work around its "Pass8" reconstruction revamp; ATLAS operates a Tier2 center at SLAC and as such can be viewed as a contractual agreement to provide a certain level of cycles continuously. It is imagined that at some point, LSST will start increasing its needs, but at this time - 8 years from first light - those needs are still unspecified.
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