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flat assembler > Non-x86 architectures > DEC Alpha's EV8 Tarantula Vector Extensions

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mattst88



Joined: 12 May 2006
Posts: 260
Location: South Carolina
When researching alpha stuff, I happened across a PDF titled "Tarantula: A Vector Extension to the Alpha Architecture".

Let me quote:
Quote:
Tarantula adds to the Alpha ISA new architectural state
in the form of 32 vector registers (v0..v31) and their as-
sociated control registers: vector length (vl), vector stride
(vs), and vector mask (vm). Each vector register holds 128
64-bit values.


Surely I didn't read this right?! 8192 bit vector registers?! And Intel is touting its new 256 bit AVX extensions?

The Inquirer says that the Tarantula extensions would have added 32 1024 bit vector registers. I can only assume the official white paper linked above would be more accurate, but in either case, it doesn't appear any current processors come close to providing what the EV8 would have given us by now.

Good God. This is just one more reason to mourn the death of the alpha. Forget EV8, EV10s would be the top of the line now had alpha not been murdered, and just think what they would provide beyond 8192 bit vector operations...

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Post 08 Jul 2008, 20:46
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 16736
Location: In your JS exploiting you and your system
Well the EV8 was never made so it is all academic now. But I expect there are very few applications that can make good use of such a wide register. The current bunch of GPUs are probably already exceeding the level of the EV8, so I doubt we are missing much.
Post 08 Jul 2008, 21:16
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