Advanced Micro Devices - Moderated (AMD) Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Advanced Micro Devices - Moderated (AMD)

AMD 259.65

+2.3%

Jan 23 9:30 AM EST

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: Joe NYC who wrote (123700)	6/15/2004 2:58:13 AM
From: Petz	Read Replies (1) of 275872

I agree with you on K9 FPU, good way to put it (low hanging fruit). Another thing I came across recently is that there are 3 primitive instructions to help in the execution of encryption and decryption. They are of the bit-sniffing variety, to help implement efficient bit permutations. Only some of the encryption algorithms benefit from 64-bit multiply. The ones that do are sped up by a factor of up to 4 using AMD's implementation of AMD64, which has a true 64x64==>128 bit hardware multiplier. I found several articles that talked about these new proposed instructions when googling for encryption+"64-bit CPU" IIRC. These other 3 primitive instructions, whose name and exact definition escapes me, could have a similar effect on performance of the encryption/decryption algorithms that don't benefit so much from 64-bit multiply. I just hope something like this isn't part of Intel's La Grande, but think that possibility is very remote. Petz

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next