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How do you find the number of non-zero elements in a Grid Function in Cactus?
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<div class="">-DG</div>
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<div class="">David Garrison, Ph.D.&nbsp;<br class="">
Faculty Senate President,&nbsp;<br class="">
Associate Professor of&nbsp;Physics<br class="">
University of Houston-Clear Lake&nbsp;<br class="">
Bayou 3531<br class="">
Houston, TX 77058&nbsp;<br class="">
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Tel: 281-283-3796&nbsp;<br class="">
Fax: 281-283-3709&nbsp;<br class="">
<a href="http://sce.uhcl.edu/garrison" class="">http://sce.uhcl.edu/garrison</a>&nbsp;<br class="">
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&quot;If we knew what it was we were&nbsp;doing, it would not be called&nbsp;research, would it?&quot; — Albert&nbsp;Einstein.&nbsp;<br class="">
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