Post
Wed Jul 05, 2017 8:41 pm
#64
One thing: as I was reading the story, it sounded like the distinction the author was drawing between "atomic tasks" and "shared data" is what I remember being called SISD and SIMD: Single-Instruction Stream Multiple Data Stream vs. Single Instruction Stream Single Data Stream (from "Flynn's Taxonomy").
As I recall it, atomic tasks are sequences of required and order-dependent instructions on their own data -- the basic von Neumann model. Those, as noted, are hard to parallelize. The fun starts when you can do something like one instruction against a large amount of similar data (SIMD); that can be parallelized as a graphics card handles big texture maps. (It's probably not an accident that an Nvidia employee was on the team that came up with Fractal.)
I wonder what Josh would make of this...?
Re: Articles about cool (prototype) technologies
VERY nice find, Cornflakes! This really is clever.Cornflakes_91 wrote: ↑Wed Jul 05, 2017 4:26 pmhttps://phys.org/news/2017-07-greatly-c ... ithms.html
One thing: as I was reading the story, it sounded like the distinction the author was drawing between "atomic tasks" and "shared data" is what I remember being called SISD and SIMD: Single-Instruction Stream Multiple Data Stream vs. Single Instruction Stream Single Data Stream (from "Flynn's Taxonomy").
As I recall it, atomic tasks are sequences of required and order-dependent instructions on their own data -- the basic von Neumann model. Those, as noted, are hard to parallelize. The fun starts when you can do something like one instruction against a large amount of similar data (SIMD); that can be parallelized as a graphics card handles big texture maps. (It's probably not an accident that an Nvidia employee was on the team that came up with Fractal.)
I wonder what Josh would make of this...?
Post
Mon Sep 11, 2017 12:01 am
#65
Re: Articles about cool (prototype) technologies
The most marvelous things you've ever seen! All the performance improvements!
Automation engineer, lateral thinker, soldier, addicted to music, books and gaming.
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Flatfingers wrote: 23.01.2017: "Show me the smoldering corpse of Perfectionist Josh"