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# Input file and repeated tags
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If in the `input` file the same tag appears more than once the code will apply the value that appears as last. For example:
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``` bash
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temperature 0.01 # requested temperature in units of eF, default T=0
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energyconveps 1.0e-6 # energy convergence epsilon
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npartconveps 1.0e+6 # number of particles convergence epsilon
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linearmixing 0.5 # mixing parameter (alpha) for linear mixing, default=0.5
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muchange 0.0 # coefficient for changing chemical potential, default=0.5
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mumaxchange 0.05 # maximal amount that chemical potential can change between iterations, in units of Fermi energy
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maxiters 200 # maximum number of iterations, default=10000
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temperature 0.02 # ... AND AGAIN TEMPERATURE ...
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referencekF 1.0 # reference kF, otherwise max density will be used to calculate it automatically as kF=(3pi^2 n)^(1/3)
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aBdG -0.9 # scattering length for BDG mode, used only when FUNCTIONAL==BDG
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temperature 0.03 # ... AND AGAIN TEMPERATURE ... THIS ONE WILL BE USES IN CALCS!
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```
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Here, the `temperature` is provided three times, and finally, the value `0.03` will be in the calculation.
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# Executing campaign of calculations
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The common situation is that we want to execute series calculations for various input parameters. As examples let us consider the case, where we would like to repeat the same calculations for temperatures 0.01, 0.02, 0.03. We can do it within the single script as follow:
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```bash
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# input.txt contains common settings for all runs
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# T=0.01
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echo "temperature 0.01" >> input.txt
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echo "outprefix T0.01" >> input.txt
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mpirun -np 20 ./st-wslda-2d input.txt
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# T=0.02
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echo "temperature 0.02" >> input.txt
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echo "outprefix T0.02" >> input.txt
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# I can use previous result as a starting point
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echo "inprefix T0.01" >> input.txt
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echo "inittype 5" >> input.txt
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mpirun -np 20 ./st-wslda-2d input.txt
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# T=0.03
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echo "temperature 0.03" >> input.txt
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echo "outprefix T0.03" >> input.txt
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# I can use previous result as a starting point
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echo "inprefix T0.02" >> input.txt
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echo "inittype 5" >> input.txt
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mpirun -np 20 ./st-wslda-2d input.txt
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``` |
