Memory-hard function: Difference between revisions

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== Memory hard measure ==
There are different ways to measure the memory hardness of a function., Aand a commonly seen measure is Cumulative Memory Complexity (CMC). In a parallel model, CMC is the sum of the memory required to compute a function over every time step of the computation.<ref>(AS15) Alwen, Serbineko, [https://eprint.iacr.org/2014/238.pdf ''High Parallel Complexity Graphs and Memory-Hard Functions''], 2015</ref><ref>{{cite arXiv |last1=Alwen |first1=Joel |last2=Blocki |first2=Jeremiah |last3=Pietrzak |first3=Krzysztof |date=2017-07-07 |title=Sustained Space Complexity |class=cs.CR |eprint=1705.05313 }}</ref>
 
Another viable measure is integrating memory against physical time.<ref>(MO16) Moran, Orlov, [https://eprint.iacr.org/2016/035.pdf ''Simple Proofs of Space-Time and Rational Proofs of Storage''], 2016</ref>