  A summary of the constraints from the ATLAS experiment on $R$-parity
conserving supersymmetry is presented. Results from 22 separate ATLAS searches
are considered, each based on analysis of up to 20.3 fb$^{-1}$ of proton-proton
collision data at the centre-of-mass energy of $\sqrt{s}$ = 7 and 8 TeV at the
Large Hadron Collider. The results are interpreted in the context of the
19-parameter phenomenological minimal supersymmetric standard model, in which
the lightest supersymmetric particle is a neutralino, taking into account
constraints from previous precision electroweak and flavour measurements as
well as from dark matter related measurements. The results are presented in
terms of constraints on supersymmetric particle masses and are compared to
limits from simplified models. The impact of ATLAS searches on parameters such
as the dark matter relic density, the couplings of the observed Higgs boson,
and the degree of electroweak fine-tuning is also shown. Spectra for surviving
supersymmetry model points with low fine-tunings are presented.
