I'm trying to create a TMS layer from a gdal VRT dataset. To speed thing up, I'm trying to use gdal2tiles_parallel (https://github.com/GitHubRGI/geopackage-python/wiki/Usage-Instructions-for-gdal2tiles_parallel.py). The command I'm using is:
gdal2tiles_parallel -e -z '5-15' --format=PNG sp2014_b321.vrt sp2014_b321_tms/
The program starts fine, the directory is created and the Z (zoom) folders are also created. However, only one X folder is created inside each Z folder and only one png is created for each zoom level. The program ends without error but the TMS is incomplete. Has anyone seen this? Any idea how to fix is?