# Computational complexity of chemical dynamics for biological studies [closed]

How many CPU cycle is required to simulate a complete human body from it's very initial stem cell using classical algorithms and also is it possible to use similar algorithms for simulating stem cells themselves from their very initial atoms?

How much computing these models will cost based on available hardwares today?

## closed as too broad by Paul♦Jul 11 '15 at 18:48

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The estimated number of cells in the human body is $3.72 \times 10^{13}$;1 the estimated number of molecules in a single cell is about $10^{14}$.2
Given that the current peta-scale supercomputers need a full day to simulate the motion of $1.2\times 10^{7}$ particles over $49$ nanoseconds3 -- and a simulation of the complexity you propose needs to keep track of much more than just the position! -- what you propose is completely infeasible with the technology that can realistically be expected to be available in the near and mid future.