10/29/2022 0 Comments Download old version of coin tickThe reason k=32 was chosen as the minimum plot size was to prevent a short-range replotting attack, which is detailed in our consensus doc. A couple of k=33 plots with a majority of k=32 plots can reduce the amount of leftover unused space on a drive. There is only one reason why you might want to plot larger than k=32: to maximize the total utilization of a given drive or space. There is small natural variation in temp space needed and the final file size of each plot. Current working space needed for the default plotting options of a k=32 is 239 GiB and the final file is approximately 101.4 GiB. You can see some example plot sizes, times to plot, and working space needed based on various k's in these k size tables. You can examine the Space Required section of the Chia Proof of Space Construction document for the calculation of how much space is required for a given k. In practice this means that final size is roughly ((2 * k) + 1) * (2 ** (k - 1)) * 0.762 though that constant is estimated. It is an integer for the following equation: plot_size_bytes = C1 * 2^k(k + C2) where C1 is constant 1 and C2 is constant 2. "k" is the space parameter that controls the size of plots.
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