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Friday, April 14, 2006

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candice

The massive address space you get from going 64-bit is breathtaking. However, 32 to 64-bit is often a huge deal. Infrastructure, transitions, code, testing (lots of testing.)

I've been fixing stuff so that it works on Alpha for years, and there are some things that end up requiring complete rewrites. Non-trivial stuff.

In basic, basic terms, the biggest problem that gets introduced is that all of a sudden your pointers are bigger than standard integers (usually, sometimes the integers are bigger too, but this causes other problems), and lots of optimizations and "magic" code goes straight out the window.

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