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context demo: nthreads_max 32
GraphBLAS Context: World
Context.nthreads: 32
Context.chunk: 65536
nthreads to use: 32
nmat 1
threads ( 1, 1): 1 time: 1.8872 sec speedup: 1.000
threads ( 1, 2): 2 time: 1.1648 sec speedup: 1.620
threads ( 1, 4): 4 time: 0.6206 sec speedup: 3.041
threads ( 1, 8): 8 time: 0.4050 sec speedup: 4.659
threads ( 1, 16): 16 time: 0.3003 sec speedup: 6.284
threads ( 1, 32): 32 time: 0.2695 sec speedup: 7.002
nmat 2
threads ( 1, 1): 1 time: 3.8363 sec speedup: 1.000
threads ( 1, 2): 2 time: 2.2758 sec speedup: 1.686
threads ( 2, 1): 2 time: 1.9078 sec speedup: 2.011
threads ( 1, 4): 4 time: 1.2567 sec speedup: 3.053
threads ( 2, 2): 4 time: 1.2209 sec speedup: 3.142
threads ( 1, 8): 8 time: 0.8167 sec speedup: 4.697
threads ( 2, 4): 8 time: 0.7064 sec speedup: 5.431
threads ( 1, 16): 16 time: 0.6008 sec speedup: 6.385
threads ( 2, 8): 16 time: 0.5364 sec speedup: 7.151
threads ( 1, 32): 32 time: 0.5385 sec speedup: 7.125
threads ( 2, 16): 32 time: 0.4709 sec speedup: 8.146
nmat 4
threads ( 1, 1): 1 time: 7.5279 sec speedup: 1.000
threads ( 1, 2): 2 time: 4.6509 sec speedup: 1.619
threads ( 2, 1): 2 time: 3.8123 sec speedup: 1.975
threads ( 1, 4): 4 time: 2.5009 sec speedup: 3.010
threads ( 2, 2): 4 time: 2.2907 sec speedup: 3.286
threads ( 4, 1): 4 time: 2.0223 sec speedup: 3.722
threads ( 1, 8): 8 time: 1.6284 sec speedup: 4.623
threads ( 2, 4): 8 time: 1.3979 sec speedup: 5.385
threads ( 4, 2): 8 time: 1.2717 sec speedup: 5.920
threads ( 1, 16): 16 time: 1.1974 sec speedup: 6.287
threads ( 2, 8): 16 time: 1.0761 sec speedup: 6.996
threads ( 4, 4): 16 time: 1.0082 sec speedup: 7.467
threads ( 1, 32): 32 time: 1.0969 sec speedup: 6.863
threads ( 2, 16): 32 time: 0.9691 sec speedup: 7.768
threads ( 4, 8): 32 time: 0.8739 sec speedup: 8.615
nmat 8
threads ( 1, 1): 1 time: 15.1258 sec speedup: 1.000
threads ( 1, 2): 2 time: 9.0710 sec speedup: 1.667
threads ( 2, 1): 2 time: 7.6391 sec speedup: 1.980
threads ( 1, 4): 4 time: 4.9519 sec speedup: 3.055
threads ( 2, 2): 4 time: 4.7943 sec speedup: 3.155
threads ( 4, 1): 4 time: 3.9578 sec speedup: 3.822
threads ( 1, 8): 8 time: 3.2406 sec speedup: 4.668
threads ( 2, 4): 8 time: 2.7872 sec speedup: 5.427
threads ( 4, 2): 8 time: 2.6267 sec speedup: 5.758
threads ( 8, 1): 8 time: 2.2365 sec speedup: 6.763
threads ( 1, 16): 16 time: 2.4299 sec speedup: 6.225
threads ( 2, 8): 16 time: 2.1736 sec speedup: 6.959
threads ( 4, 4): 16 time: 1.9760 sec speedup: 7.655
threads ( 8, 2): 16 time: 1.8013 sec speedup: 8.397
threads ( 1, 32): 32 time: 2.2446 sec speedup: 6.739
threads ( 2, 16): 32 time: 1.8530 sec speedup: 8.163
threads ( 4, 8): 32 time: 1.8092 sec speedup: 8.361
threads ( 8, 4): 32 time: 1.6111 sec speedup: 9.389
nmat 16
threads ( 1, 1): 1 time: 30.1287 sec speedup: 1.000
threads ( 1, 2): 2 time: 18.4422 sec speedup: 1.634
threads ( 2, 1): 2 time: 15.2398 sec speedup: 1.977
threads ( 1, 4): 4 time: 10.0832 sec speedup: 2.988
threads ( 2, 2): 4 time: 9.3758 sec speedup: 3.213
threads ( 4, 1): 4 time: 7.8656 sec speedup: 3.830
threads ( 1, 8): 8 time: 6.5859 sec speedup: 4.575
threads ( 2, 4): 8 time: 5.5956 sec speedup: 5.384
threads ( 4, 2): 8 time: 5.0997 sec speedup: 5.908
threads ( 8, 1): 8 time: 4.4455 sec speedup: 6.777
threads ( 1, 16): 16 time: 4.9009 sec speedup: 6.148
threads ( 2, 8): 16 time: 4.1517 sec speedup: 7.257
threads ( 4, 4): 16 time: 3.8824 sec speedup: 7.760
threads ( 8, 2): 16 time: 3.4861 sec speedup: 8.642
threads ( 16, 1): 16 time: 3.1729 sec speedup: 9.496
threads ( 1, 32): 32 time: 4.5256 sec speedup: 6.657
threads ( 2, 16): 32 time: 3.7821 sec speedup: 7.966
threads ( 4, 8): 32 time: 3.5929 sec speedup: 8.386
threads ( 8, 4): 32 time: 3.2492 sec speedup: 9.273
threads ( 16, 2): 32 time: 3.0619 sec speedup: 9.840
nmat 32
threads ( 1, 1): 1 time: 60.2346 sec speedup: 1.000
threads ( 1, 2): 2 time: 36.8352 sec speedup: 1.635
threads ( 2, 1): 2 time: 30.4048 sec speedup: 1.981
threads ( 1, 4): 4 time: 20.1776 sec speedup: 2.985
threads ( 2, 2): 4 time: 19.1438 sec speedup: 3.146
threads ( 4, 1): 4 time: 15.7468 sec speedup: 3.825
threads ( 1, 8): 8 time: 13.0692 sec speedup: 4.609
threads ( 2, 4): 8 time: 11.3337 sec speedup: 5.315
threads ( 4, 2): 8 time: 10.2462 sec speedup: 5.879
threads ( 8, 1): 8 time: 8.6603 sec speedup: 6.955
threads ( 1, 16): 16 time: 9.7062 sec speedup: 6.206
threads ( 2, 8): 16 time: 8.6990 sec speedup: 6.924
threads ( 4, 4): 16 time: 7.7606 sec speedup: 7.762
threads ( 8, 2): 16 time: 6.9603 sec speedup: 8.654
threads ( 16, 1): 16 time: 6.5332 sec speedup: 9.220
threads ( 1, 32): 32 time: 9.0971 sec speedup: 6.621
threads ( 2, 16): 32 time: 7.4761 sec speedup: 8.057
threads ( 4, 8): 32 time: 7.0028 sec speedup: 8.601
threads ( 8, 4): 32 time: 6.3830 sec speedup: 9.437
threads ( 16, 2): 32 time: 5.9026 sec speedup: 10.205
threads ( 32, 1): 32 time: 5.2373 sec speedup: 11.501
nmat 64
threads ( 1, 1): 1 time: 120.4971 sec speedup: 1.000
threads ( 1, 2): 2 time: 74.6771 sec speedup: 1.614
threads ( 2, 1): 2 time: 60.7731 sec speedup: 1.983
threads ( 1, 4): 4 time: 40.8018 sec speedup: 2.953
threads ( 2, 2): 4 time: 38.1307 sec speedup: 3.160
threads ( 4, 1): 4 time: 31.5319 sec speedup: 3.821
threads ( 1, 8): 8 time: 26.2851 sec speedup: 4.584
threads ( 2, 4): 8 time: 22.2293 sec speedup: 5.421
threads ( 4, 2): 8 time: 20.2981 sec speedup: 5.936
threads ( 8, 1): 8 time: 17.2022 sec speedup: 7.005
threads ( 1, 16): 16 time: 19.3734 sec speedup: 6.220
threads ( 2, 8): 16 time: 17.1528 sec speedup: 7.025
threads ( 4, 4): 16 time: 15.2618 sec speedup: 7.895
threads ( 8, 2): 16 time: 13.8422 sec speedup: 8.705
threads ( 16, 1): 16 time: 12.3033 sec speedup: 9.794
threads ( 1, 32): 32 time: 17.9717 sec speedup: 6.705
threads ( 2, 16): 32 time: 15.1003 sec speedup: 7.980
threads ( 4, 8): 32 time: 14.6149 sec speedup: 8.245
threads ( 8, 4): 32 time: 12.6766 sec speedup: 9.505
threads ( 16, 2): 32 time: 11.6014 sec speedup: 10.386
threads ( 32, 1): 32 time: 10.5020 sec speedup: 11.474
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