For the computation of the deformed structures, intermediate data is computed which describes the displacement for each voxel. Before this computation, it is not clear how large this data will be, since a voxel in the original structure might be partially moved in multiple voxels in the deformed structure. Therefore, this data might not fit in the main memory of the computer. Due to this, the deformation data was always written to the hard drive in GeoDict 2020 and before. Nevertheless, there is an issue with this approach: Writing and loading data form the hard drive is many times slower that writing and loading data in the main memory (even if the drive is an SSD). This causes a bottleneck, which can slow the simulation down.

Therefore, GeoDict 2021 and later allows to keep the deformation data in memory. This is the new default, since the data fits in the main memory in most cases, and this option is many times faster. To get the old behavior from GeoDict 2020 and before, check the option Write Deformation Data to File. We recommend keeping this option disabled, and to select it only if the calculation of the deformed geometry fails because the data does not fit into the RAM.