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Sol is a distributed computation program capable of combining OpenTopography Lidar data and DAYMET weather data to compute an Effective Energy to Mass Trasfer DEM. Sol uses GRASS GIS, R, and DaymetR behind the scenes to perform computation. Because this computation is computationally difficult, Sol uses Makeflow and WorkQueue to distribute the workload across as many systems as desired.

Pre-Installation Requirements: Debain Operating System

Instructions: On a ubuntu system of your choice download the Sol program to your home directory.

To install Sol Master Node run:

sudo ./install_master.sh
source ~/.bashrc
iinit
grass64

To install Sol Worker Nodes run:

sudo ./install_worker.sh
source ~/.bashrc
grass64

The initialization parameters for iinit are:

To initialize the grass location first run grass64

<ESC><ENTER>
y
y
D
y
<Enter a 1 line description here>y
y
lcc
y
wgs84
<ENTER>
<ENTER>
<ESC><ENTER>
y
<ENTER>
<ESC><ENTER>
exit

To run the master node simply call sol_master.sh <DEM> <Metadata> Year, giving it the path to your OpenTopo DEM, and OpenTopo Metadata File and the year you wish to compute.

To automatically run a Sol Worker call sol_worker.sh for as many workers as you desire. (Note: Exceeding the number of cores you have is highly unrecommended.

To add workers, on any machine with Makeflow/Workqueue installed run work_queue_worker -N ACIC3 -p 5550 as many times as workers as you want. We recommend 1 worker per processing core.