Expected bunny raytracing runtime?

mshoe commented 4 years ago

How long should we expect raytracing to take for the bunny?

darren-moore commented 4 years ago

With the settings here (https://github.com/dilevin/computer-graphics-ray-tracing/issues/23), ~6:30 minutes on my i7-6600U laptop processor. I can report back with a test on the CDF machines later.
Consider using the included hw2 lib. Its Triangle::intersection code is pretty speedy compared to some possible implementations.
We're not grading you on efficiency.
Relevant issue: https://github.com/dilevin/computer-graphics-ray-tracing/issues/10
(for interest) investigate OpenMP and try using #pragma omp parallel for with the main.cpp for loop. Runtime was cut to ~2:45 on my laptop.
- Convince yourself that ray tracing is embarrassingly parallel first.

ginkxo commented 4 years ago

Where do we add -fopenmp to the Makefile to enable OpenMP parallelization?

darren-moore commented 4 years ago

Where do we add -fopenmp to the Makefile to enable OpenMP parallelization?

You can add the compiler option using -DCMAKE_CXX_FLAGS="-fopenmp" e.g. cmake -DCMAKE_CXX_FLAGS="-fopenmp" -DCMAKE_BUILD_TYPE=Release -DHW2LIB_DIR=../lib/release/linux/ ..

darren-moore commented 4 years ago

I can report back with a test on the CDF machines later.

for bunny I'm getting ~4:15 on CDF, and if I multithread(for fun), ~1:15.

dilevin / computer-graphics-ray-tracing

Expected bunny raytracing runtime? #27