Ray Tracing in Nim

Re:Ray Tracing in Nim by bjourne on Thursday July 02, 2020 @09:13AM (#23712754)

Has anyone had any luck reproducing the benchmark figures given for the smallpt program? When I try, gcc handily beats nim in the multi-threaded scenario and they are neck and neck in the single-threaded one. For 10 samples per pixel:

    g++ multi-threaded : 33.52
    nim multi-threaded : 36.90
    g++ single-threaded: 75.78
    nim single-threaded: 75.95

nim 1.2.0, g++ 10.1.0. I used the flags -O3 -march=native -mtune=native -Wall -Werror for gcc and the default flags for nim.

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Re:Ray Tracing in Nim by bjourne on Thursday July 02, 2020 @02:33PM (#23716449)

Here is the code if anyone is interested: https://github.com/bjourne/c-examples/blob/master/programs/s... With a few tweaks, g++ beats nim both in the multi-threaded and single-threaded setups.

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