At UQAM GenPhysX is only working on alea.
You first need to load:
module load utils/SPI
For the different available datasets check here.
When using USGS set:
TOPO=USGS
VEGE=USGS_R
MASK=USGS_R
SOIL=JPL
VEGE=USGS_R
MASK=USGS_R
SOIL=JPL
When using CCI-LC set:
TOPO=GMTED75 # missing Antarctica and Greenland!!!
or
TOPO=GMTED30 # lower resolution
VEGE=CCI_LC
MASK=CCI_LC
SOIL=BNU