Difference between revisions of "Tutorials:Parameters"

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(New page: = Common input parameters = The following input parameters are common to most of the ALPS applications == Lattice defintion == ALPS applications on lattices specify the lattice with the ...)
 
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= Common input parameters =
 
= Common input parameters =
 
The following input parameters are common to most of the ALPS applications
 
The following input parameters are common to most of the ALPS applications
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{| border="1" cellpadding="5" cellspacing="0"
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|| '''Parameter'''
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|| '''Default'''
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|| '''Meaning'''
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|-
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|| SEED
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| align="center"| 0
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|| The random number seed used in the next Monte Carlo run created. After using a seed in the creation of a Monte Carlo run, this value gets incremented by one.
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|-
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|| WORK_FACTOR
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| align="center"| 1
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|| A factor by which the work that needs to be done for a simulation is multiplied in load balancing.
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|}
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== Lattice defintion ==
 
== Lattice defintion ==
  
 
ALPS applications on lattices specify the lattice with the following three parameters
 
ALPS applications on lattices specify the lattice with the following three parameters
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Revision as of 00:25, 1 March 2007

Common input parameters

The following input parameters are common to most of the ALPS applications


Parameter Default Meaning
SEED 0 The random number seed used in the next Monte Carlo run created. After using a seed in the creation of a Monte Carlo run, this value gets incremented by one.
WORK_FACTOR 1 A factor by which the work that needs to be done for a simulation is multiplied in load balancing.


Lattice defintion

ALPS applications on lattices specify the lattice with the following three parameters


</tbody>
Name Default Description
LATTICE_LIBRARY lattices.xml path to a file containing lattice descriptions
LATTICE
name of the lattice
MODEL_LIBRARY models.xml path to a file containing model descriptions
MODEL
name of the model (for example "spin" or "boson")
T
the temperature
BETA

inverse of temperature (if

temperature is not given)

SWEEPS

number of Monte Carlo steps

(after thermalization)

THERMALIZATION SWEEPS / 10 Number of Monte Carlo sweeps for thermalization

In addition, the lattice description can require further parameters (e.g. L or W) as specified in the lattice description file.
The model description can also require further parameters (e.g. S=1/2 or S=1, h=0.5 for spin models, t=1.5 or mu=0.5 for boson models) as specified in the model description file.