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A TeamPolicy example featuring Kokkos::single #580

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A TeamPolicy example featuring Kokkos::single #580

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18 changes: 18 additions & 0 deletions docs/source/API/core/policies/TeamPolicy.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -180,3 +180,21 @@ Examples
TeamPolicy<Schedule<Dynamic>, OpenMP> policy_3(N,AUTO,8);
TeamPolicy<IndexType<int>, Schedule<Dynamic>> policy_4(N,1,4);
TeamPolicy<OpenMP> policy_5(OpenMP(), N, AUTO);
.. code-block:: cpp
using team_handle = TeamPolicy<>::member_type;
parallel_for(TeamPolicy<>(N,AUTO), KOKKOS_LAMBDA (const team_handle& team) {
int n = team.league_rank();
parallel_for(TeamThreadRange(team,M), [&] (const int& i) {
A(n,i) = B(n) + i;
});
team.team_barrier();
Comment on lines +189 to +192
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Does this add anything in clarity for th example?

Suggested change
parallel_for(TeamThreadRange(team,M), [&] (const int& i) {
A(n,i) = B(n) + i;
});
team.team_barrier();

Maybe add a comment explaining that this is computing the sum over each row in a matrix stored as a rank-2 View?

int team_sum;
parallel_reduce(TeamThreadRange(team,M), [&] (const int& i, int& lsum) {
lsum += A(n,i);
},team_sum);
single(PerTeam(team),[&] () {
A_rowsum(n) = team_sum;
});
});
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