So awesome: Microsoft's "performance tidbits" got 50% of their "incontrovertible facts" about x64 wrong :(pic.twitter.com/Ukc9x7GYdb
I'm worried that the baby thinks people can't change.
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So awesome: Microsoft's "performance tidbits" got 50% of their "incontrovertible facts" about x64 wrong :(pic.twitter.com/Ukc9x7GYdb
@cmuratori I've written about this at length. To observe all you do is run code that's bigger than cache, but doesn't page.
@ricomariani I think you don't understand the difference between a fact and an example.
@cmuratori @ricomariani Stating that it is a "fact" that the same algorithm gets bigger in 64-bit compared to 32-bit means it's always true.
@cmuratori @ricomariani This is obviously false, if you think about it even cursorily.
@cmuratori @ricomariani It is not difficult to construct a register-dependent algorithm that is bigger in x86 than in x64.
@cmuratori The article is about a hypothetical port of VS to 64 bit. I can assure you it would be bigger. It isn't about say math kernels.
@ricomariani Yeah, I can assure you it would be bigger too! What does that have to do with the definition of a fact?
@cmuratori @ricomariani The fact that Visual Studio is an gigantic mess that I can't even _imagine_ why it's as slow as it is...
@cmuratori @ricomariani ... is not particularly relevant to "facts" about 64-bit computing.
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