I am downscaling ERA-Interim to 0.125 resolution with the CCLM2 on the big node of blizzard at DKRZ. But the memory (100GB) of that node is not enough. The only way is to reduce the memory requirement of the job. What would be the options to reduce the memory requirements without reducing the resolution?
You may try to use more CPUs to distribute the load. However, for such special questions regarding the DKRZ system I would first ask firstname.lastname@example.org because they are the experts.