Dear devs, just for your information, i have added the support of input files with newline separated map names to r.series. r.series now supports two input methods, file and input. Using option <file> is slower but avoids the open file descriptor limit.
Now we can process ten-thousands of maps with r.series without hitting the open file descriptor limit or the maximum command line size limit. Limiting factor is now the RAM. I have tested r.series with ~6000 maps (ECA&D daily temperature data from 1995-2010) each ~100000 cells. Computation needs for method average about 3 minutes on my (fast) machine. Memory footprint is about 330MB of RAM. But this looks like a memory leak to me, because the memory consumption raise linear with the processed rows of the output map. All the memory allocation in r.series is done before the row processing ... ??? Change: http://trac.osgeo.org/grass/changeset/48638 The changes includes also some tests and the temporal module tr.series. Best regards Soeren _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
