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Cacheless Simulation | cacheless – Only the last simulated frame will remain in RAM and no caches will be written to the storage. This will speed up simulations which are bound by slow reading or writing to the hard disk or by compression and decompression of the grid or particle data. You can use this option when iterating on the simulation settings in order to speed up your iterations. It can also be combined with the Render the Render On Each Sim Frame option Frame option under the Simulation rollout, so you will get a ready image sequence if you leave the simulation unattended and then return to check it.

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