Clarification oneDPL RNG examples

cbyrohl — Fri, 01 Mar 2024 16:01:48 GMT

Hi there,

I am currently trying to understand the use of oneDPL RNGs. There are a range of examples using this API on the internet. They all follow the same structure: within the parallel_for, we create an engine, a distribution and generate the random number as distribution(engine) for further use. See example at https://oneapi-src.github.io/oneDPL/api_for_sycl_kernels/random.html . Without SYCL/oneDPL one would use C++ std such that the engine and distribution are created outside of the for loop, and putting these into the loop come with a substantial performance hit. Could you clarify, maybe also in the documentation of the examples, how and why the placement and performance differs for oneDPL RNGs compared to C++ stdlib.

Thanks,

topic Clarification oneDPL RNG examples in Intel® oneAPI DPC++/C++ Compiler

Clarification oneDPL RNG examples