Before You Begin

After installing oneTBB, you need to set the environment variables:

Go to the oneTBB installation directory (<install_dir>). By default, <install_dir> is the following:
- On Linux* OS:
  - For superusers (root): /opt/intel/oneapi
  - For ordinary users (non-root): $HOME/intel/oneapi
- On Windows* OS:
  - <Program Files>\Intel\oneAPI
Set the environment variables, using the script in <install_dir>, by running
- On Linux* OS:
  
  vars.{sh|csh} in <install_dir>/tbb/latest/env
- On Windows* OS:
  
  vars.bat in <install_dir>/tbb/latest/env

Example

Below you can find a typical example for a oneTBB algorithm. The sample calculates a sum of all integer numbers from 1 to 100.

int sum = oneapi::tbb::parallel_reduce(oneapi::tbb::blocked_range<int>(1,101), 0,
   [](oneapi::tbb::blocked_range<int> const& r, int init) -> int {
      for (int v = r.begin(); v != r.end(); v++  ) {
         init += v;
      }
      return init;
   },
   [](int lhs, int rhs) -> int {
      return lhs + rhs;
   }
);