I am working with is the Ullmann algorithm for finding maximum subgraph isomorphism

I suspect that if you posted your implementation that its performance could be improved substantially. Especially if you are manipulating large 2D arrays of 0's & 1's much of the time.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: Performance problem with Clone Method by BrowserUk
in thread Performance problem with Clone Method by Commandosupremo

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