sudo port install gd2
- OpenCL drivers are included in macOS versions later than 10.6 Snow Leopard but we recommend 10.11 El Capitan. Unfortunately, Apples OpenCL drivers tend to be buggy and the only way to change them is by upgrading to a different version of macOS. We cannot say much about the Sierra drivers so far but have made some bad experience with Yosemite.
- libgd is in the Ubuntu package repository
sudo apt-get install libgd-dev
- Depending on your hardware you have to install OpenCL drivers according to your vendor. Coming Soon.
Either download through the browser or
git clone https://github.com/pSpitzner/AtmoCL.git
Change into the AtmoCL folder and
cd AtmoCL
make
to get the executable. Possibly you have to adjust the path to linked libraries and includes, depending on where you installed OpenCL and libgd. Note that this is platform dependant, edit the right ones.
If you have a look into the run file, you will see that this just calls the executable and does some cleanup work. Start the program using
./run
and you will see a list of available devices (adapted from here) and the according driver version, such as below:
Available CL Devices (choose via '-dev i')
0 Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
Apple - OpenCL 1.2 (Nov 1 2016 21:34:57)
1 AMD Radeon HD Tahiti XT Prototype Compute Engine
Apple - OpenCL 1.2 (Nov 1 2016 21:34:57)
In this example, to choose the GPU one would type
./run -dev 1
There is also a -profiling option, which forces the host to wait for the device to finish every step before enqueuing the next. It also creates additional logs for performance measuring and may help debugging. Try this if you are running into problems.
Any generated output is written into an output folder that you can change with -o, the default is ./output/%YYYY-%mm-%dd. Symlinks are followed.
According subdirectories are created for images img, timeseries, verticalprofiles, logs and snapshots.
If you run for the first time, a snapshot of the initial profile will be created after equilibrating (and every full hour) and saved in a snapshots folder. Such profiles can be imported using the -b argument.
./run -dev 1 -b ./output/oldrun/snapshots/equil/
So far, settings are hard coded into the program, so you have to recompile after doing any changes.
make clean; make
Most settings are located at the beginning of the classes/asystem.cpp class. They are grouped into a global parameter struct we call par, that is also available in kernels and other classes.
Before increasing the volume to get an actual 3D simulation box, make sure your computer has the power to handle it. Especially on Latops running macOS, your whole OS interface may become unresponsive up to the point where you are unable to kill the process. To be safe, run on a remote box over ssh.
You can change the amount of cells in each dimension
par.sx = 128;
//par.sy = 1;
par.sy = 128;
par.sz = 64;
and the cell size
par.dx = 50.0;
par.dy = 50.0;
par.dz = 20.0;
to get the desired system volume.
par.dT = 1.0;
is the large time step in seconds from which intermediate step sizes par.dtis[s] and step amounts par.nsi[s] are calculated for the different stages.
In the classes/clexporter.cpp class you will find the three parameters setting the interval of exporting images, timeseries and vertical profiles
img_every = 60.0; // write image files every 60 seconds
ts_every = 60.0; // make an entry into timeseries
vp_every = 120.0; // write a vertical profile every 120s
Presently, the repo contains the following branches: cell, isdac and wrf, the former are test cases and the latter is our first draft to import wrf files.
So far, the cell works as expected.
Isdac produces qualitatively matching results but needs further work. (N_i isnt fixed to desired value yet, simulation includes ice microphysics at all times).
To run a test case, checkout the branch, make and run, i.e.
git checkout cell
make clean; make
./run