Search found 55 matches

by mpeterson
Mon Jun 11, 2018 11:57 am
Forum: Visuals
Topic: My introduction
Replies: 9
Views: 583

Re: My introduction

hi, i must warn you: this forum is more or less dead.
by mpeterson
Thu Mar 22, 2018 3:00 pm
Forum: General Development
Topic: DXR
Replies: 6
Views: 1493

Re: DXR

doing this now > 20 years all this ads seems to be odd (at least for me).
every time i look into the details of impl. its boring crap and never optimized for the used hw.

so the good old times are over since years...
by mpeterson
Wed Jan 31, 2018 12:18 pm
Forum: Links & Papers
Topic: Stackless MBVH Traversal for CPU, MIC and GPU Ray Tracing
Replies: 15
Views: 15124

Re: Stackless MBVH Traversal for CPU, MIC and GPU Ray Tracing

again: this is 10 years old crap. go with state of the art -> google is your friend !
by mpeterson
Wed Nov 29, 2017 9:36 am
Forum: General Development
Topic: Path tracing benchmark
Replies: 3
Views: 3588

Re: Path tracing benchmark

just a quick update: we did some tests on intels knights mill. to make it short: the machine is boring.

no perf. progress at all. all the vector ext. are simple crap. for graphics intel seems to be a dead end. gpus will dominate the next years.

so all the cpu stuff was wasted time.



mp
by mpeterson
Tue Nov 07, 2017 9:21 am
Forum: Tools, Demos & Sources
Topic: SIMDy
Replies: 7
Views: 2937

Re: SIMDy

sorry, but absolutely useless. the n+1 invocation of an "auto-vectorizer" ... and pathon ? what is it really good for ?
by mpeterson
Wed Jan 25, 2017 1:16 pm
Forum: General Development
Topic: Path tracing benchmark
Replies: 3
Views: 3588

Path tracing benchmark

It took some time after we build up our first coherent traversal kernel for avx512 http://ompf2.com/viewtopic.php?f=3&t=2103 to get a competitive incoherent kernel ready for prime time. Here it is ! For the benchmark we used a full pipeline available easily on any architecture: 1) camera ray gen...
by mpeterson
Tue Oct 04, 2016 10:25 am
Forum: General Development
Topic: AVX512 MBVH4 Traversal
Replies: 8
Views: 6721

Re: AVX512 MBVH4 Traversal

yes (nn sampling and bi-linear sampling). keep in mind that knl has 90gb/s on pretty large mem and extra 400gb/s on 16gb. atm we are playing around with all the diff. mem. options. beside this, we try to run the pt as a special kind of "stand-alone-app" on knl without os noise. a lot o new...
by mpeterson
Fri Sep 30, 2016 11:53 am
Forum: General Development
Topic: AVX512 MBVH4 Traversal
Replies: 8
Views: 6721

Re: AVX512 MBVH4 Traversal

yes, i would like to run the bench on latest gpu gen. but titan is all i have around.concerning the incoherent transport: yes it will be a different story for shure. first of all, the implementation is not straight forward on avx512 (avx512 is pretty inflexible when it comes to random access streami...
by mpeterson
Fri Sep 23, 2016 1:05 pm
Forum: General Development
Topic: AVX512 MBVH4 Traversal
Replies: 8
Views: 6721

AVX512 MBVH4 Traversal

with intels knl being now available to everyone, people start asking for a native avx512 port of clpt ( http://ompf2.com/viewtopic.php?f=3&t=2075 ). knl seems to be the first accelerator from intel with some kind of power under the hood (knf and knc have been simple nonstarters). so i did an opt...
by mpeterson
Thu Jul 14, 2016 9:28 am
Forum: General Development
Topic: super fast parallel sbvh construction
Replies: 6
Views: 9844

Re: super fast parallel sbvh construction

spectral wrote:Is there some patent on it ... or we are free to use it or even add it to embree ?

Which Embree kernel do you use for the comparison ?


no patent. you are free to use it as you like. paper describes everything in detail.
we compared against all of them and took the best performing one.

mp

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