[gpuCI] Forward-merge branch-21.10 to branch-21.12 [skip gpuci]#333

Merged

GPUtester merged 5 commits intobranch-21.12from branch-21.10

Sep 22, 2021

+799-78

Commits on Aug 25, 2021

Remove -g from cython compile commands (#317 )
trxcllnt
authored

Commits on Sep 17, 2021

Accounting for rmm::cuda_stream_pool not having a constructor for 0 streams (#329 )
divyegala
authored

Commits on Sep 20, 2021

Fused L2 (unexpanded) kNN kernel for NN <= 64, without using temporary gmem to store intermediate distances (#324 )
mdoijade
authored

Commits on Sep 21, 2021

Make sure we keep the rapids-cmake and raft cal version in sync (#331 )
robertmaynard
authored

Commits on Sep 22, 2021

Merge pull request #332 from rapidsai/branch-21.08
ajschmidt8
committed