|
| 1 | +""" |
| 2 | + download.py |
| 3 | + |
| 4 | + EPCC, The University of Edinburgh |
| 5 | + |
| 6 | + (c) 2023 The University of Edinburgh |
| 7 | + |
| 8 | + Contributing Authors: |
| 9 | + Christodoulos Stylianou ([email protected]) |
| 10 | + |
| 11 | + Licensed under the Apache License, Version 2.0 (the "License"); |
| 12 | + you may not use this file except in compliance with the License. |
| 13 | + You may obtain a copy of the License at |
| 14 | + |
| 15 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 16 | + |
| 17 | + Unless required by applicable law or agreed to in writing, software |
| 18 | + distributed under the License is distributed on an "AS IS" BASIS, |
| 19 | + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 20 | + See the License for the specific language governing permissions and |
| 21 | + limitations under the License. |
| 22 | +""" |
| 23 | + |
| 24 | +""" |
| 25 | +The following script is used to download 100 real and square matrices |
| 26 | +with a maximum of 100k Non-zeros from SuiteSparse collection. |
| 27 | +""" |
| 28 | + |
| 29 | +import ssgetpy |
| 30 | +import random |
| 31 | +import os |
| 32 | + |
| 33 | +OUTDIR = os.path.dirname(os.path.abspath(__file__)) + "/" + "matrices" |
| 34 | +MAX_MATICES = 10000 |
| 35 | +SET_MATRICES = 100 |
| 36 | +MAX_NNZ = 100000 |
| 37 | + |
| 38 | +# Set seed to randomize list in the same way |
| 39 | +random.seed(0) |
| 40 | + |
| 41 | +matrices = ssgetpy.matrix.MatrixList() |
| 42 | +dtypes = ["Real"] |
| 43 | + |
| 44 | +for dtype in dtypes: |
| 45 | + result = ssgetpy.search( |
| 46 | + dtype=dtype.lower(), nzbounds=(0, MAX_NNZ), limit=MAX_MATICES |
| 47 | + ) |
| 48 | + print(dtype + " matrices: " + str(len(result))) |
| 49 | + |
| 50 | + # Shuffle the list |
| 51 | + random.shuffle(result) |
| 52 | + |
| 53 | + ctr = 0 |
| 54 | + for matrix in result: |
| 55 | + if len(matrices) == SET_MATRICES: |
| 56 | + break |
| 57 | + |
| 58 | + if (matrix.rows != matrix.cols) or (matrix.id in [230, 231]): |
| 59 | + # Matrices 230 & 231 are Skew-Symmetric |
| 60 | + result.remove(matrix) |
| 61 | + ctr += 1 |
| 62 | + else: |
| 63 | + matrices.append(matrix) |
| 64 | + |
| 65 | + print("\tRemoved " + str(ctr) + " non-square " + dtype + " matrices") |
| 66 | + |
| 67 | +print("Total Matrices in the set: " + str(len(matrices))) |
| 68 | + |
| 69 | +matrices.download(destpath=OUTDIR, extract=True) |
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