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CUDA-x86.

address set to 0x0 after F77 calls C
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mkcolg



Joined: 30 Jun 2004
Posts: 6125
Location: The Portland Group Inc.

PostPosted: Mon Jul 09, 2007 2:48 pm    Post subject: Reply with quote

Hi Kenny,

Quote:
Concerning your 64-bit question, I've been debating that with a colleague. Is there any advantage to a 64-bit executable vs. the corresponding 32-bit executable (except for greater range of memory addresses which I don't think is pertinent for this code) such as speed or accuracy or anything else?

IMHO 64-bit is more often, but not always, faster than 32-bit code. How much faster can vary widely depending on how well the compiler utilizes the extra registers and how much the program is able to take advantage of faster math intrinsics.

Accuracy has more to do with the compiler options used rather than 64 vs 32-bits.

- Mat
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