ARM vs. x86 is irrelevant from an energy efficiency POV

Article: AMD's Mobile Strategy
By: Exophase (exophase.delete@this.gmail.com), December 20, 2011 6:19 pm
Room: Moderated Discussions
Linus Torvalds (torvalds@linux-foundation.org) on 12/20/11 wrote:
---------------------------
>ARM doesn't have anywhere near the kinds of address
>generation that x86 has.
>
>The whole "base+small offset/shifted index" is just a tiny
>part of the equation. Static addresses are common, and are
>part of that "x86 has much more flexible immediates" that
>you dismissed so cavalierly.
>
>Big PC-relative offsets and larger immediates are a big
>part of address generation. And things like thread-local
>storage is actually important too these days.
>
>You do realize that even the oft-maligned x86 segmenting
>is actually used again? Using a segment for thread-
>local storage is actually nice. Having access to it from
>a CISC instruction set in a single instruction also has
>real threading advantages, because you have the hardware
>giving atomicity guarantees wrt NMI's and other events,
>even in user space.
>
>So there really are advantages to the x86 instruction set.
>In the kernel, we do a lot of per-cpu things, because
>we care about scalability more than the average bear, and
>it's a real advantage how we can do a per-cpu increment
>with a single instruction, exactly because that way we do
>not need to disable interrupts or preemption.
>
>And part of that is the read-modify-write ops, but part of
>it is also the addressing modes: using a segment prefix to
>cause the operation to go to the percpu area.
>
>So some memory op issues cause x86 instructions to be
>much more powerful, because it has secondary
>effects.
>
>Linus

I don't know why you think I'm disregarding x86's strengths when I list them out pretty categorically. No one is saying that absolute addressing or even segmentation is useless. Yes, I didn't list absolute addresses specifically, I figured that was redundant with reg + reg + imm even if the latter doesn't necessarily have to allow for the former.

I appreciate that the technological relevance something has with respect to the kernel is important to you, and I'm sure I could find more examples to support your claims. I could also list several examples where folded shifts, predication, and post-adjust addressing have made a big difference in inner loops of my ARM code. I won't bother making an argument about these things because it's truly anecdotal.

I'm looking for more current references for x86 instruction category histograms. Here's one that's fairly recent one:

http://www.strchr.com/x86_machine_code_statistics

This lists absolute addressing is only being 1% of operand types. Mind you, this is by program scan and not by dynamic usage, but I would hardly expect that they'd be more frequently appearing in execution since you generally want to keep global variables out of your tight inner loops.

I could find some other histograms but they're really old, and let's face it - code style has changed. Old 16-bit statistics are especially too far removed. If you have others please feel free to provide them.

What I CAN provide is some ARM statistics. I have a Nintendo DS emulator capable of profiling ARM instruction frequency (dynamically, by execution). I've played four games for a few minutes (I only looked at ARM code, not Thumb: most games are more ARM heavy). Two were 2D and two were 3D. This is what I found:

- 45.3% of instructions are ALU operations
- 51% of ALU instructions are reg/reg, 49% are reg/imm
- 40.66% of reg/reg ALU instructions have an inlined shift

So about 9.3% of instructions use inlined shifts. This number is however inflated since it counts mov as an ALU instruction, so all shifts are included. But in my experience shifts can be folded more often than not.

- 24.2% of instructions are memory operations
- 70.8% of memory operations are loads, 29.2% are stores
- 6.7% of memory operations are post-adjust (but this value varies a lot more than the others)

So about 1.6% of instructions use post-adjust addressing.

And about 3.72% of instructions are block memory (no details on average register count, sorry). And no, ARM's block memory instructions and x86's rep movs and friends are NOT the same. For copying large blocks of memory they're close to the same, but ARM's block memory instructions are more commonly used for saving and restoring registers. Which happens all the time at function prologues and epilogues, and before function calls for that matter. x86 has pusha but that does all registers (but sp) and implementations have greatly neglected it to the point where it's never used anymore. ARM block memory instructions, on the other hand, have been maintained as decent performers.

I'd like to give data on predication but my profiling isn't very good with that: it tracks predication type, taken branches, and untaken instructions in general, but it doesn't distinguish types for untakens. I'll need to adjust it to get more information.
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TopicPosted ByDate
AMD's Mobile StrategyMark Pillsbury2011/12/14 05:58 PM
  ARM vs. x86 is irrelevant from an energy efficiency POV Daniel Bizo2011/12/15 04:30 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV Foo_2011/12/15 05:08 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV an2011/12/15 05:25 AM
      ARM vs. x86 is irrelevant from an energy efficiency POV Azazel2011/12/15 08:50 PM
        ARM vs. x86 is irrelevant from an energy efficiency POV Mike C2011/12/22 01:14 PM
          ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/23 06:06 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV Mike C2011/12/23 07:07 PM
    ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 06:46 AM
      ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/15 09:32 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV a person2011/12/15 09:59 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/15 10:18 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/16 06:22 PM
            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 05:56 AM
              Thumb vs ARM instruction countsnone2011/12/17 10:15 AM
                Thumb vs ARM instruction countsWilco2011/12/22 06:50 AM
                  Thumb vs ARM instruction countsExophase2011/12/22 07:56 AM
        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/15 10:44 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/15 02:24 PM
            ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/15 03:15 PM
              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/15 03:51 PM
                ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/15 04:32 PM
                  ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/15 05:57 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/15 07:58 PM
                      ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 11:27 PM
                    Is scalar x86 decode that easy?Paul A. Clayton2011/12/15 08:20 PM
                      Is scalar x86 decode that easy?Linus Torvalds2011/12/16 11:09 AM
                        Is scalar x86 decode that easy?EduardoS2011/12/17 09:03 AM
                        Is scalar x86 decode that easy?Ricardo B2011/12/17 01:21 PM
                          Is scalar x86 decode that easy?Megol2011/12/18 04:23 AM
                            Is scalar x86 decode that easy?rwessel2011/12/18 09:04 AM
                              Is scalar x86 decode that easy?Megol2011/12/18 09:38 AM
                              Is scalar x86 decode that easy?Linus Torvalds2011/12/18 11:15 AM
                                Is scalar x86 decode that easy?Ricardo B2011/12/18 12:57 PM
                                  Is scalar x86 decode that easy?Linus Torvalds2011/12/18 01:49 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 11:00 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/17 11:13 AM
                      Conditional comparesMichael S2011/12/17 12:05 PM
                        Conditional comparesEduardoS2011/12/17 12:32 PM
                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/15 04:56 PM
                  ARM free to innovate?Paul A. Clayton2011/12/15 08:14 PM
                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 09:01 AM
                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/16 01:33 PM
                      ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 05:30 PM
                        ARM vs. x86 is irrelevant from an energy efficiency POV rwessel2011/12/16 11:51 PM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Octoploid2011/12/17 06:46 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 09:56 AM
                        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 06:45 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 10:31 AM
                            ARM vs. x86 is irrelevant from an energy efficiency POV anon2011/12/21 08:12 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/17 01:16 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 02:30 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV none2011/12/17 04:00 PM
                              ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 04:29 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/17 04:45 PM
                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 09:24 AM
                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 12:07 PM
                            ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 06:19 PM
                              ARM vs. x86 is irrelevant from an energy efficiency POV EduardoS2011/12/20 06:40 PM
                                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 07:02 PM
                                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 07:49 PM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 07:59 PM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/21 02:49 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 09:10 AM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/21 05:41 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/21 06:43 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 08:28 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/21 10:59 AM
                                              Cortex A9 latenciesS. Rao2011/12/21 08:12 PM
                                                Cortex A9 latenciesWilco2011/12/22 03:59 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/22 12:25 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 08:42 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/22 01:02 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/22 04:44 AM
                                              ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/22 06:57 AM
                                    (in)visibility of ISA featureshobold2011/12/21 05:27 AM
                              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 06:51 PM
                                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 07:13 PM
                                  ARM vs. x86 is irrelevant from an energy efficiency POV EduardoS2011/12/20 07:41 PM
                                    second to that (NT)Michael S2011/12/21 01:37 AM
                                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/20 08:03 PM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/20 10:05 PM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 01:22 AM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 08:28 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 09:06 AM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 09:33 AM
                                              ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 10:03 AM
                                                ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 10:33 AM
                                                  Adding modes for flexible imm. sizesPaul A. Clayton2011/12/21 03:08 PM
                                                  ARM vs. x86 is irrelevant from an energy efficiency POV anonymous2011/12/21 09:57 PM
                                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/21 10:12 PM
                                                      ARM vs. x86 is irrelevant from an energy efficiency POV anonymous2011/12/22 01:27 AM
                                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/22 07:27 AM
                                                ARM vs. x86 is irrelevant from an energy efficiency POV Brett2011/12/21 10:36 PM
                                            ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/21 04:34 PM
                                              ARM vs. x86 is irrelevant from an energy efficiency POV Seni2011/12/21 05:53 PM
                                                ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/22 05:42 AM
                                                  ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/22 04:29 PM
                                                    ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/22 06:17 PM
                                                      ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/22 07:23 PM
                                                        ARM vs. x86 is irrelevant from an energy efficiency POV Exophase2011/12/22 08:27 PM
                                                          Confused by AVX....David Kanter2011/12/22 11:05 PM
                                                            Celeron, PentiumMichael S2011/12/23 12:15 AM
                                                            Confused by AVX....S. Rao2011/12/23 12:27 AM
                                                            Confused by AVX....Gabriele Svelto2011/12/23 12:33 AM
                                                              Confused by AVX....David Kanter2011/12/23 11:58 AM
                                                                Confused by AVX....Gabriele Svelto2011/12/23 01:44 PM
                                      Load Single Register (pc-relative, literal load)Michael S2011/12/21 01:55 AM
                                        Load Single Register (pc-relative, literal load)Wilco2011/12/21 07:35 AM
                                          Load Single Register (pc-relative, literal load)Brett2011/12/21 11:20 PM
                                            Load Single Register (pc-relative, literal load)Exophase2011/12/22 07:32 AM
                                              Load Single Register (pc-relative, literal load)iz2011/12/22 04:45 PM
                                        Load Single Register (pc-relative, literal load)Exophase2011/12/21 08:34 AM
                                          Load Single Register (pc-relative, literal load)Wilco2011/12/21 03:29 PM
                                            Load Single Register (pc-relative, literal load)Exophase2011/12/22 07:37 AM
                                              Load Single Register (pc-relative, literal load)Brett2011/12/22 10:59 PM
                                          Load Single Register (pc-relative, literal load)Konrad Schwarz2011/12/27 04:07 AM
                                        Load Single Register (pc-relative, literal load)stubar2011/12/21 02:00 PM
                                          Load Single Register (pc-relative, literal load)Exophase2011/12/21 02:25 PM
                                            Load Single Register (pc-relative, literal load)Wilco2011/12/21 03:30 PM
                                              Load Single Register (pc-relative, literal load)anon2011/12/21 08:20 PM
                                                Load Single Register (pc-relative, literal load)Wilco2011/12/22 04:50 AM
                                                  Load Single Register (pc-relative, literal load)anon2011/12/22 05:11 AM
                                                    Load Single Register (pc-relative, literal load)Wilco2011/12/22 06:25 AM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/21 07:18 PM
                                        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/22 05:07 AM
                                          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/22 09:56 AM
                                            idle philosophizing about localityhobold2011/12/23 07:26 AM
                                              Streaming needs regularity, not locality (NT)Rohit2011/12/23 12:32 PM
                                                Streaming needs regularity, not localityiz2011/12/23 11:38 PM
                                                Streaming needs regularity, not localityhobold2011/12/24 03:49 AM
                                                  Streaming needs regularity, not localityRohit2011/12/24 07:52 AM
                                                  Streaming needs regularity, not localityEBFE2011/12/25 05:30 PM
                                                    Streaming needs regularity, not localityRohit2011/12/25 08:42 PM
                                                      Streaming needs regularity, not localityEBFE2011/12/25 10:49 PM
                                                        Streaming needs regularity, not localityRohit2011/12/26 08:53 AM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/21 01:57 AM
                                      ARM vs. x86 is irrelevant from an energy efficiency POV John Yates2011/12/26 09:46 AM
                                        Apollo Computer's DN10KBrett2011/12/26 05:56 PM
                                          Apollo Computer's DN10Kpeter huisken2011/12/27 06:40 AM
                                    ARM vs. x86 is irrelevant from an energy efficiency POV gallier22011/12/21 05:56 AM
                              ALU with shift; post-adjust, memcpyMichael S2011/12/21 02:22 AM
                                ALU with shift; post-adjust, memcpyExophase2011/12/21 08:02 AM
                                  memcpyMichael S2011/12/21 09:36 AM
                                    memcpyExophase2011/12/21 10:15 AM
                                    memcpyWilco2011/12/21 05:06 PM
                                      memcpyanon2011/12/21 08:15 PM
                                      memcpyMichael S2011/12/21 11:12 PM
                                        memcpyWilco2011/12/22 05:20 AM
                          Other x86 uop tricksDavid Kanter2011/12/20 06:21 PM
                            Other x86 uop tricksanon2011/12/20 06:35 PM
                              Other x86 uop tricksMichael S2011/12/21 02:55 AM
                            Other x86 uop tricksanon2011/12/20 06:53 PM
                            Other x86 uop tricksExophase2011/12/20 06:54 PM
                      stwxMichael S2011/12/17 09:46 AM
                        stwxWilco2011/12/17 10:33 AM
                          stwxMichael S2011/12/17 12:12 PM
            ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/16 10:06 AM
              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 10:17 AM
                Reason for shared decoderPaul A. Clayton2011/12/16 10:45 AM
                  Reason for shared decoderanon2011/12/16 05:37 PM
                    Reason for shared decodermpx2011/12/17 05:20 AM
                      Reason for shared decoderanon2011/12/17 03:19 PM
                        Reason for shared decodermpx2011/12/18 06:21 AM
                          Reason for shared decoderanon2011/12/18 07:30 AM
                          Reason for shared decoderKira2011/12/18 08:00 PM
                ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/17 04:40 AM
                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/17 11:06 AM
                    ARM vs. x86 is irrelevant from an energy efficiency POV mpx2011/12/17 02:17 PM
        ARM vs. x86 is irrelevant from an energy efficiency POV Wilco2011/12/15 11:10 PM
          ARM vs. x86 is irrelevant from an energy efficiency POV David Kanter2011/12/16 03:19 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/16 09:14 AM
          ARM vs. x86 is irrelevant from an energy efficiency POV Eugene Nalimov2011/12/16 10:07 AM
            ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/18 06:25 AM
              ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/18 11:48 AM
                ARM vs. x86 is irrelevant from an energy efficiency POV Michael S2011/12/18 03:01 PM
                  ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/18 04:21 PM
                    ARM vs. x86 is irrelevant from an energy efficiency POV Linus Torvalds2011/12/18 06:56 PM
      x86 compatibility is not as important as Microsoft compatibilityBrett2011/12/15 07:13 PM
      You're completley missing the pictureDaniel Bizo2011/12/16 07:12 AM
        Missed referencesDaniel Bizo2011/12/16 07:16 AM
          Missed referencesnone2011/12/16 08:17 AM
            Missed referencesDaniel Bizo2011/12/16 08:29 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV Gabriele Svelto2011/12/15 11:55 AM
    ARM vs. x86 is irrelevant from an energy efficiency POV someone2011/12/15 12:19 PM
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        6 GHz 2-core water-cooled processorgallier22011/12/20 12:31 AM
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              USB drive price-point practical?Paul A. Clayton2011/12/20 11:49 AM
                USB drive price-point practical?Seni2011/12/20 01:02 PM
                  A minor comment on utilityPaul A. Clayton2011/12/20 02:19 PM
                    A minor comment on utilitySeni2011/12/20 02:35 PM
                    A minor comment on utilityFoo_2011/12/21 06:06 AM
                      100" Big screen.pH72011/12/26 11:37 AM
                USB drive price-point practical?David Hess2011/12/20 04:25 PM
                  USB drive price-point practical?iz2011/12/20 05:08 PM
                    USB drive price-point practical?David Hess2011/12/21 06:54 AM
                      USB drive price-point practical?iz2011/12/21 10:21 PM
                  USB drive price-point practical?Ungo2011/12/20 05:36 PM
                    USB drive price-point practical?David Hess2011/12/21 06:48 AM
              scalability of flash SSDEduardoS2011/12/20 02:50 PM
                scalability of flash SSDSeni2011/12/20 05:41 PM
                  scalability of flash SSDEduardoS2011/12/20 05:50 PM
                    scalability of flash SSDSeni2011/12/20 06:24 PM
                      scalability of flash SSDEduardoS2011/12/20 06:51 PM
                        scalability of flash SSDanon2011/12/21 03:03 AM
                          scalability of flash SSDanon2011/12/21 04:21 AM
                            scalability of flash SSDEduardoS2011/12/21 12:32 PM
                              scalability of flash SSDanon2011/12/21 02:49 PM
                                scalability of flash SSDEduardoS2011/12/21 03:58 PM
                                  scalability of flash SSDanon2011/12/21 08:00 PM
                                    scalability of flash SSDEduardoS2011/12/22 01:58 AM
                                    scalability of flash SSDRicardo B2011/12/22 07:36 AM
              scalability of flash SSDWes Felter2011/12/20 04:53 PM
                scalability of flash SSDSeni2011/12/20 05:24 PM
                scalability of flash SSDiz2011/12/20 05:29 PM
        6 GHz 2-core water-cooled processorExophase2011/12/20 08:05 AM
          6 GHz 2-core water-cooled processorEduardoS2011/12/20 02:58 PM
            6 GHz 2-core water-cooled processorExophase2011/12/20 05:13 PM
              6 GHz 2-core water-cooled processorEduardoS2011/12/20 05:43 PM
                6 GHz 2-core water-cooled processorExophase2011/12/21 10:36 AM
                  6 GHz 2-core water-cooled processorSeni2011/12/21 11:11 AM
                    6 GHz 2-core water-cooled processorExophase2011/12/21 11:26 AM
                  Diatomic Helium? (NT)Paul A. Clayton2011/12/21 02:50 PM
                    Sorry, should have read further in thread! (NT)Paul A. Clayton2011/12/21 02:52 PM
      6 GHz 2-core water-cooled processorsomeone2011/12/20 09:09 AM
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    AMD's Mobile StrategyMike C2011/12/27 10:01 PM
  Need for DifferentiationBill Henkel2011/12/29 11:22 AM
    Need for DifferentiationBrett2011/12/29 08:53 PM
      Need for DifferentiationVincent Diepeveen2011/12/30 10:29 AM
      Requested software features already in productCharles2011/12/30 08:35 PM
        Requested software features already in productSanjay B2012/01/11 03:45 PM
          Requested software features already in productBrett2012/01/11 09:18 PM
    Need for DifferentiationDavid Kanter2011/12/30 12:23 AM
      Need for DifferentiationVincent Diepeveen2011/12/30 10:17 AM
      Need for DifferentiationBill Henkel2012/01/03 06:01 PM
        Need for DifferentiationDavid Kanter2012/01/03 07:34 PM
    Need for DifferentiationVincent Diepeveen2011/12/30 10:09 AM
    L4 CacheBill Henkel2011/12/30 04:55 PM
      L4 CacheDavid Kanter2011/12/30 08:34 PM
        L4 CacheEduardoS2011/12/31 02:42 PM
          L4 CacheExophase2011/12/31 04:37 PM
      Need for speedDoug Siebert2011/12/31 12:07 PM
        Need for speedAlex M2012/01/06 02:38 PM
          Need for speedDoug Siebert2012/01/06 06:51 PM
        Need for speedTom J2012/01/10 03:44 PM
          Need for speedrwessel2012/01/10 04:30 PM
      L4 CacheRicardo B2011/12/31 01:25 PM
        L4 CacheBill Henkel2012/01/03 05:33 PM
          L4 CacheDavid Kanter2012/01/03 07:54 PM
            L4 Cache--not quite that bad?Paul A. Clayton2012/01/04 12:10 PM
              L4 Cache--not quite that bad?David Kanter2012/01/04 03:59 PM
                L4 Cache--not so bad (for Intel/IBM perhaps)Paul A. Clayton2012/01/04 07:01 PM
                L4 CacheBill Henkel2012/01/05 04:50 PM
                  Integration class price/performance tradeoffs?Paul A. Clayton2012/01/06 02:26 PM
                    Integration class price/performance tradeoffs?David Kanter2012/01/06 05:29 PM
                      InterposersMark Roulo2012/01/09 08:43 AM
                        InterposersDavid Kanter2012/01/10 11:13 AM
                    Integration class price/performance tradeoffs?Bill Henkel2012/01/06 05:52 PM
                      Beware of invention-stealing time travelers :-)Paul A. Clayton2012/01/06 07:31 PM
                        AMD PrototypePoindexter2012/01/07 05:20 AM
                    L4 Cache with Silicon InterposerTom J2012/01/08 04:50 PM
              L4 Cache--not quite that bad?rwessel2012/01/04 06:20 PM
                Temptation for expensive optimizationsPaul A. Clayton2012/01/04 07:20 PM
            L4 CacheDan Fay2012/01/04 04:51 PM
              L4 CacheRicardo B2012/01/04 05:39 PM
                L4 CacheDan Fay2012/01/04 05:57 PM
              L4 CacheKevin G2012/01/06 08:02 AM
          L4 CacheRicardo B2012/01/04 05:29 PM
            L4 CacheMichael S2012/01/05 06:21 AM
              L4 CacheRicardo B2012/01/05 10:01 AM
              L4 CacheRicardo B2012/01/06 05:06 AM
                L4 CacheMichael S2012/01/06 06:35 AM
                  Non-latency advantagesPaul A. Clayton2012/01/06 02:04 PM
                    Non-latency advantagesRicardo B2012/01/06 05:12 PM
                      Tag check delay??Paul A. Clayton2012/01/06 06:05 PM
                        Tag check delay??Ricardo B2012/01/06 07:18 PM
                          Thanks for sharingPaul A. Clayton2012/01/06 07:46 PM
            L4 Cachesomeone2012/01/08 04:06 PM
              L4 CacheRicardo B2012/01/08 05:28 PM
      L4 CacheVincent Diepeveen2012/01/08 01:11 PM
        L4 CacheJouni Osmala2012/01/09 02:24 AM
  Value of x86 in ServersGeorge Baker2012/01/04 09:55 AM
    Value of x86 in ServersDavid Kanter2012/01/05 01:40 AM
      Value of x86 in Serversrwessel2012/01/05 02:27 AM
        Value of x86 in ServersDavid Kanter2012/01/05 03:49 AM
      Value of x86 in ServersKira2012/01/09 04:22 PM
        Value of x86 in ServersJoel2012/01/09 08:20 PM
    Value of x86 in ServersDan Fay2012/01/05 08:03 AM
    Value of x86 in ServersAlex M2012/01/06 03:23 PM
    Value of x86 in ServersTom J2012/01/10 03:25 PM
      Value of x86 in Serversanon2012/01/11 11:44 AM
        Value of x86 in ServersGregory2012/01/12 05:11 PM
          x86 complexity or high-performance complexity?Paul A. Clayton2012/01/12 05:52 PM
          Value of x86 in ServersMichael S2012/01/13 05:39 AM
            Value of x86 in ServersRicardo B2012/01/13 02:14 PM
              Value of x86 in ServersMichael S2012/01/14 11:22 AM
  Heterogeneous ComputingAlex M2012/01/06 04:10 AM
    Thoughput != SIMDPaul A. Clayton2012/01/06 04:10 PM
  AMD's Processor StrategyJason Chan2012/01/10 05:06 AM
    AMD's Processor StrategyMark Roulo2012/01/10 05:21 PM
      AMD's Processor StrategyMegol2012/01/11 02:51 AM
        AMD's Processor StrategyDavid Hess2012/01/11 09:46 AM
    AMD's Processor StrategyAzazel2012/01/12 08:46 PM
      AMD's Processor StrategyVincent Diepeveen2012/01/13 05:28 AM
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