The tools of ASR can be combined to perform complicated tasks with little effort. Below you will find the recommended procedures to perform common tasks within the ASR framework.
List of available how-to guides
Suppose you have a set of folders with a structure like:
tree/A/Mn/ tree/AB/MnI2/ tree/*/*/ etc.
Then collect the database with:
$ asr run "database.fromtree tree/*/*/"
And open a local web server with:
$ asr run "database.app database.db"
Now browse it with:
$ firefox localhost:5000
It is also recommended to use these recipes together with the myqueue job managing package. We assume that you have installed the myqueue-package and are familiar with its usage. If you are not, then take a look at its excellent documentation. To submit a job that relaxes a structure simply do:
$ mq submit asr.relax -R 24:10h
You can also specify arguments with:
$ mq submit "asr.relax --allow-symmetry-breaking" -R 24:10h
Let’s assume that the bandstructure has been calculated and you want to display the results. Then it’s as simple as using the asr results cli sub-command:
$ asr results asr.bandstructure
which will save any figures generated by the webpanel associated with asr.bandstructure in the current folder.
Suppose that you want to continue working on a previously packaged project, for example, to calculate a new property. Suppose the project is packaged as project.db, and that you only want to unpack the ground state results since your new recipe does not need other results in the database.
To unpack the project do:
$ asr run "database.totree project.db --run --patterns results-asr.c2db.gs.json,gs.gpw"
Then perform the calculations needed in the unpacked folders. When calculations are done package them and merge the databases:
$ asr run "database.fromtree tree/*/*/*/" $ asr run "database.merge project.db database.db merged.db"
The databases have now been merged into a new database called merged.db.
Here we are creating results object, converting it to a
converting it back to a result object
>>> import numpy as np >>> from asr.core import decode_object >>> from asr.c2db.piezoelectrictensor import Result >>> result = Result.fromdata(eps_vvv=np.ones((3, 3, 3), float), eps_clamped_vvv=np.ones((3, 3, 3), float)) >>> dct = result.format_as('dict') >>> result = decode_object(dct)
When a database has been collected with
automatically saves a special key-value-pair named as
has_asr_recipename. Concretely if
calculated for the specific row then it will have the
has_asr_c2db_gs_calculate key-value-pair defined. To select all rows
asr.c2db.gs@calculate is done then simply do
$ ase db database.db has_asr_c2db_gs_calculate
to select those rows.
Suppose you have a database
database.db from which you want to
extract some results for further treatment. Suppose that data is the
results of the
asr.bandstructure recipe. Then do
from ase.db import connect from asr.database import parse_row_data db = connect('database.db') bandstructure_results =  for row in db.select('has_asr_bandstructure'): data = parse_row_data(row.data) bs = data['results-asr.bandstructure.json'] bandstructure_results.append(bs)