Mathematica on iPad

By: dmcq (dmcq.delete@this.fano.co.uk), October 21, 2017 7:03 am
Room: Moderated Discussions
Adrian (a.delete@this.acm.org) on October 21, 2017 1:49 am wrote:
> Maynard Handley (name99.delete@this.name99.org) on October 20, 2017 8:16 pm wrote:
>
> > ...
>
>
>
> Thanks for the interesting information.
>
>
> The low performance for multi-precision operations is not surprising.
>
> While this version of Mathematica can probably be improved a lot, it cannot not reach parity
> with x86, because this (support for multi-precision operations) is exactly the area were the
> ARMv8 ISA is the most deficient compared with the x86 ISA (especially since Broadwell, but
> also Intel since Nehalem & the AMD before Bulldozer were far above any competition).
>
>
> Other deficiencies of the initial ARMv8 have already been addressed in the later extensions
> (e.g. atomic operations), but I have not heard anything about any plans for bignums.

I'm not sure what you mean. As far as I can see the multi-precision ADOX and ADCX operations of Broadwell correspond to single instructions including the actions on flags on ARMv8 and MULX becomes two instructions on ARMv8.
< Previous Post in ThreadNext Post in Thread >
TopicPosted ByDate
Mathematica on iPadMaynard Handley2017/10/20 01:34 AM
  Mathematica on iPaddmcq2017/10/20 07:26 AM
    Mathematica on iPadMaynard Handley2017/10/20 01:41 PM
      Mathematica on iPadMaynard Handley2017/10/20 08:16 PM
        Does this give better formatting?Maynard Handley2017/10/20 08:20 PM
          Does this give better formatting?anon2017/10/20 09:37 PM
            Does this give better formatting?Maynard Handley2017/10/20 10:29 PM
              Does this give better formatting?anon2017/10/21 12:52 AM
                Does this give better formatting?Maynard Handley2017/10/21 09:48 AM
                  Does this give better formatting?anon2017/10/21 10:01 AM
        Mathematica on iPadAdrian2017/10/21 01:49 AM
          Sorry for the typoAdrian2017/10/21 01:51 AM
          Mathematica on iPaddmcq2017/10/21 07:03 AM
            Mathematica on iPadMaynard Handley2017/10/21 09:58 AM
          Mathematica on iPadWilco2017/10/21 07:16 AM
            Mathematica on iPadDoug S2017/10/21 09:02 AM
              Mathematica on iPadMegol2017/10/22 05:24 AM
            clang __builtin_addcllMichael S2017/10/21 11:05 AM
          Mathematica on iPadMaynard Handley2017/10/21 09:55 AM
  Mathematica on iPadAnon2017/10/21 04:20 PM
    Mathematica on iPadMaynard Handley2017/10/21 05:51 PM
      Mathematica on iPadAnon2017/10/21 09:56 PM
        Mathematica on iPadMaynard Handley2017/10/22 12:23 AM
      A quick search shows that Mathematica is using Intel MKLGabriele Svelto2017/10/21 11:38 PM
        A quick search shows that Mathematica is using Intel MKLAnon2017/10/22 05:12 PM
          A quick search shows that Mathematica is using Intel MKLMaynard Handley2017/10/22 06:08 PM
            A quick search shows that Mathematica is using Intel MKLDoug S2017/10/22 10:40 PM
            A quick search shows that Mathematica is using Intel MKLMichael S2017/10/23 05:32 AM
  Mathematica on iPadnone2017/10/22 06:06 AM
    Mathematica on iPaddmcq2017/10/23 03:43 AM
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