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[WIP] Support enabling PTDS via CUDA_PTDS environment variable #633

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[WIP] Support enabling PTDS via CUDA_PTDS environment variable #633

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fdbd8fc
Support enabling PTDS via CUDA_PTDS environment variable
pentschev Nov 20, 2020
d789117
Expose cudaStreamLegacy/cudaStreamPerThread in Python
pentschev Nov 23, 2020
1ee52af
Rename PTDS environment variable to RMM_PER_THREAD_DEFAULT_STREAM
pentschev Nov 23, 2020
d6c6353
Switch Python stream types to cudaStream enum
pentschev Nov 23, 2020
985e249
Merge remote-tracking branch 'upstream/branch-0.18' into ptds-env-var…
pentschev Jan 6, 2021
b1d6aad
Update RMM_PER_THREAD_DEFAULT_STREAM usage
pentschev Jan 6, 2021
7ede244
Revert unnecessary change to setup.py
pentschev Jan 6, 2021
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7 changes: 6 additions & 1 deletion python/rmm/_lib/cuda_stream_view.pyx
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Expand Up @@ -12,6 +12,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.

import os

from libc.stdint cimport uintptr_t


Expand All @@ -26,7 +28,10 @@ cdef class CudaStreamView:
CUDA stream to wrap, default 0
"""
if (stream == 0):
self.c_obj.reset(new cuda_stream_view())
if int(os.environ.get("CUDA_PTDS", "0")) != 0:
self.c_obj.reset(new cuda_stream_view(<cudaStream_t>2))
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else:
self.c_obj.reset(new cuda_stream_view())
else:
self.c_obj.reset(new cuda_stream_view(<cudaStream_t>stream))

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