In Is OpenMP (parallel for) in g++ 4.7 not very efficient? 2.5x at 5x CPU, I determined that the performance of my programme varies between 11s and 13s (mostly always above 12s, and sometimes as sl...

I've tried using OpenMP with a single #pragma omp parallel for, and it resulted in my programme going from a runtime of 35s (99.6% CPU) to 14s (500% CPU), running on Intel(R) Xeon(R) CPU E3-1240 v3...

I'm trying to compile some code with the CUDA SDK 5.5 RC and g++ 4.7 on MacOS X 10.8. If I understand correctly CUDA 5.5 should work with g++ 4.7. Looking at /usr/local/cuda/include/host_config.h i...

I have code that compiled happily with g++ version 3.something. I then wanted to build some other code that had C++11 symbols in it so I upgraded to g++ 4.7. Now my original code doesn't build. I g...

Does g++ 4.7.2 implement std::set::emplace, as defined by the C++11 Standard and documented here? I have written the following little test case: #include <set> #include <string> stru...