Author: Tom Kerrigan
Date: 11:30:14 01/30/02
Go up one level in this thread
>I have checked out the instructions for the velocity engine and >could see not a single thing that i could use for my program, apart >from that i am in C, not in assembly, so a compiler would need to >do the work for me. Who cares? The question was whether or not Altivec _could_ be used for _a_ chess program, NOT whether or not it is used by Diep. Sorry, Vincent, but the world does not revolve around your stupid chess program. >If you see no usage in velocity engine then the G4 is of course a >very bad processor considering that it took them years to clock to 1Ghz >and its price (if it is already in stock) is for single cpu 1Ghz probably >above that of a 1.6ghz dual K7. Try to stay on-topic. >Does the g4 finally have 4x AGP by the way? This is not unimportant for >graphics presentations. Again, this is off-topic, but I believe AGP is a function of the chipset and not the processor, so your question makes no sense. >I didn't touch one subject, as i have no knowledge about how G4 is doing it. >But if a program is completely 64+ bits like the g4 is, don't i need >2x more storage space? You're an absolute fountain of misinformation, aren't you? First you're saying that Altivec is only for floating point and now you're saying G4s are 64-bit chips. Maybe ICD Chess should start a fiction message board just for you. >So 32KB L1 is kind of a joke then, because let's just calculate the >number of cache lines. >How many instructions can we store in that 32KB and how many datawords >can we store in the data cache in the G4? >32kb for a 64 bits processor sounds very tiny to me personally. Okay, first of all, 64 bit chips do not have 64 bit instructions, and the size of cache lines is only barely related to how big instructions or data words are anyway. Do you even know what a cache line is? >How many clocks is it for branch misprediction, 30? Try 7. You're not off by an order of magnitude, but it's close. >The truth about the G4 is probably the fact that it is so unknown. Well, it's extremely unknown to you, you've made that clear. -Tom
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