ompf2.com

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...

again: this is 10 years old crap. go with state of the art -> google is your friend !

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

sorry, but absolutely useless. the n+1 invocation of an "auto-vectorizer" ... and pathon ? what is it really good for ?

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...

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...

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...

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...

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

some month ago we presented early results of our mbvh4 traversal and intersection routines for manycore cpus. these implementations outperform latest embree kernels by 4x for coherent ray transport and > 2x for incoherent transport. the underlying accl. structure is a mbvh4 built with spatial splits...