6 ms·

Twitter pundits commenting on Geekbench benchmarks, mostly. Snark aside, Apple's CPUs are pretty(really pretty) far ahead of Qualcomm's in single-threaded perf

by tpush 9y ago

Twitter pundits commenting on Geekbench benchmarks, mostly. Snark aside, Apple's CPUs are pretty(really pretty) far ahead of Qualcomm's in single-threaded performance.

jandrese 9y ago
Qualcom's chips tend to struggle to keep up with whatever Apple released two generations ago. But it doesn't matter because if you're building an Android device you can't buy an A chip for it.
pjmlp 9y ago
Given how highly multithreaded mobile OSes are, that is only advantageous for lazy coding. Any proper iOS application with be doing lots of GCD dispatchs, for starters. Likewise on Android, Google had to change the OS behavior to just kill apps that insist in misusing the UI thread for long running tasks.
- madeofpalk 9y ago
  Single threaded programming isn't 'lazy coding'
  - pjmlp 9y ago
    It is, in the age of ubiquitous multi-core hardware. I don't remember when it was the last time any of my applications only had a single thread of execution on them, beyond shell and Python scripts. Maybe around 2000. And even then, the OS is juggling processes across all cores every few ms, so outside any benchmark winning game, there isn't much real world value in single thread performance.
    - jasonvorhe 9y ago
      Except for JavaScript performance: https://twitter.com/codinghorror/status/954493740600578049 https://twitter.com/codinghorror/status/954493740600578049
      - pjmlp 9y ago
        What I see is the quality of a JIT compiler implementation, not the use of cores.
    - eecc 9y ago
      Are you serious? Multithreadjng is not Parallelism. It’s not about processing an image in the UI thread, it’s about making that processing faster on the background thread that picks up the work. Don’t get me wrong but lots of people still write iterators, for loops and single threaded functions. Parallel algorithms are hard
- eecc 9y ago
  Uh nope, single threaded performance is the key parameter. It’s what made intel (et al) blow up with Meltdown and Spectre. It’s what they’d still be pushing if it weren’t for physics.

by tpush 9y ago

Twitter pundits commenting on Geekbench benchmarks, mostly. Snark aside, Apple's CPUs are pretty(really pretty) far ahead of Qualcomm's in single-threaded performance.

jandrese 9y ago

Qualcom's chips tend to struggle to keep up with whatever Apple released two generations ago. But it doesn't matter because if you're building an Android device you can't buy an A chip for it.

pjmlp 9y ago

Given how highly multithreaded mobile OSes are, that is only advantageous for lazy coding. Any proper iOS application with be doing lots of GCD dispatchs, for starters. Likewise on Android, Google had to change the OS behavior to just kill apps that insist in misusing the UI thread for long running tasks.

madeofpalk 9y ago
Single threaded programming isn't 'lazy coding'
- pjmlp 9y ago
  It is, in the age of ubiquitous multi-core hardware. I don't remember when it was the last time any of my applications only had a single thread of execution on them, beyond shell and Python scripts. Maybe around 2000. And even then, the OS is juggling processes across all cores every few ms, so outside any benchmark winning game, there isn't much real world value in single thread performance.
  - jasonvorhe 9y ago
    Except for JavaScript performance: https://twitter.com/codinghorror/status/954493740600578049 https://twitter.com/codinghorror/status/954493740600578049
    - pjmlp 9y ago
      What I see is the quality of a JIT compiler implementation, not the use of cores.
  - eecc 9y ago
    Are you serious? Multithreadjng is not Parallelism. It’s not about processing an image in the UI thread, it’s about making that processing faster on the background thread that picks up the work. Don’t get me wrong but lots of people still write iterators, for loops and single threaded functions. Parallel algorithms are hard
eecc 9y ago
Uh nope, single threaded performance is the key parameter. It’s what made intel (et al) blow up with Meltdown and Spectre. It’s what they’d still be pushing if it weren’t for physics.