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qr_streaming.py
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# ==============================================================================
# Copyright 2014 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
# daal4py QR example for shared memory systems
from pathlib import Path
# let's use a generator for getting stream from file (defined in stream.py)
from readcsv import pd_read_csv, read_next
import daal4py as d4p
def main(readcsv=pd_read_csv, *args, **kwargs):
data_path = Path(__file__).parent / "data" / "batch"
infile = data_path / "qr.csv"
# configure a QR object
algo = d4p.qr(streaming=True)
# get the generator (defined in stream.py)...
rn = read_next(infile, 112, readcsv)
# ... and iterate through chunks/stream
for chunk in rn:
algo.compute(chunk)
# finalize computation
result = algo.finalize()
# QR result objects provide matrixQ and matrixR
return result
if __name__ == "__main__":
result = main()
print("Orthogonal matrix Q:\n", result.matrixQ[:10])
print("Triangular matrix R:\n", result.matrixR)
print("All looks good!")