Search found 58 matches

by mpeterson
Sat Sep 07, 2019 2:16 pm
Forum: General Development
Topic: nvidia rtx perf.
Replies: 2
Views: 547

Re: nvidia rtx perf.

jbikker wrote:
Thu Sep 05, 2019 5:31 pm

4G is using the latest Lighthouse 2, https://github.com/jbikker/lighthouse2 .
yes, i had a look and browsed thru the code. good work as always. mp
by mpeterson
Thu Sep 05, 2019 3:29 pm
Forum: General Development
Topic: nvidia rtx perf.
Replies: 2
Views: 547

nvidia rtx perf.

as the discussion is going on, day by day, here is a statement: 10grays is a tech. possible limit for non-realistic scenes: that is: a single triangle without shading. in practice you get something around 1-3 grays and cannot do something useful with it without any filtering as post-proc. these numb...
by mpeterson
Thu Aug 16, 2018 8:47 am
Forum: Links & Papers
Topic: Claims of real-time Ray Tracing on mobile hardware
Replies: 2
Views: 2045

Re: Claims of real-time Ray Tracing on mobile hardware

know it. nothing special to think about. more or less simple crap.
by mpeterson
Mon Jun 11, 2018 11:57 am
Forum: Visuals, Tools, Demos & Sources
Topic: My introduction
Replies: 11
Views: 4595

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: 4892

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: 20685

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: 6726

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: Visuals, Tools, Demos & Sources
Topic: SIMDy
Replies: 7
Views: 13700

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: 6726

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 generat...
by mpeterson
Tue Oct 04, 2016 10:25 am
Forum: General Development
Topic: AVX512 MBVH4 Traversal
Replies: 8
Views: 10492

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 stuff her...