How to use it

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How to use it

To have lazy evaluation applied automatically, put the following command in your script after the imports.

$\begin{python} from esys.escript import setEscriptParamInt setEscriptParamInt('AUTOLAZY',1) \end{python}$

To get greater benefit, some fine tuning may be required. If your simulation involves iterating for a number of timesteps, you will probably have some state variables which are updated in each iteration based on their value in the previous iteration. For example:

$\begin{python} x=f(x_previous) y=g(x) z=h(y,x, ...) \end{python}$

Could be modified to:

$\begin{python} x=f(x_previous) resolve(x) y=g(x) z=h(y,x, ...) \end{python}$

The resolve command forces x to be evaluated immediately.

Next: When to use it Up: Lazy Evaluation Previous: Lazy Evaluation Contents Index

esys@esscc.uq.edu.au