2019-12-05 11:00:34 +01:00
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from sys import getsizeof
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from time import time
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import numpy as np
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import pyximport
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from lib_q_computer import Qubit, __0, kron
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pyximport.install()
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def sizeof_fmt(num, suffix='B'):
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for unit in ['', 'Ki', 'Mi', 'Gi', 'Ti', 'Pi', 'Ei', 'Zi']:
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if abs(num) < 1024.0:
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return "%3.1f%s%s" % (num, unit, suffix)
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num /= 1024.0
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return "%.1f%s%s" % (num, 'Yi', suffix)
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def run_load_test(N=20):
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"""
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Runs a load test with max N qubits (up to and including N).
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Expectation is that on a 8GB laptop I should be able to run about 30 qubits using 8-byte numbers.
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(2**30 * 8 ) / 1024**3 = 8.0
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2019-12-17 18:05:14 +01:00
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Example run output with N=27 on 64GB machine **(without jit, without cython optimizations)**
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2019-12-05 11:00:34 +01:00
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qbits kron_len mem_used mem_per_q getsizeof getsiz/len nbytes nbytes/len time
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2 4 0.0B 0.0B 144.0B 36.0B 32.0B 8.0B 0.0
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3 8 0.0B 0.0B 176.0B 22.0B 64.0B 8.0B 0.0
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4 16 0.0B 0.0B 240.0B 15.0B 128.0B 8.0B 0.0
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5 32 0.0B 0.0B 368.0B 11.5B 256.0B 8.0B 0.0
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6 64 0.0B 0.0B 624.0B 9.8B 512.0B 8.0B 0.0
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7 128 0.0B 0.0B 1.1KiB 8.9B 1.0KiB 8.0B 0.0
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8 256 0.0B 0.0B 2.1KiB 8.4B 2.0KiB 8.0B 0.0
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9 512 312.0KiB 624.0B 4.1KiB 8.2B 4.0KiB 8.0B 0.0
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10 1024 312.0KiB 312.0B 8.1KiB 8.1B 8.0KiB 8.0B 0.0
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11 2048 312.0KiB 156.0B 16.1KiB 8.1B 16.0KiB 8.0B 0.0
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12 4096 816.0KiB 204.0B 32.1KiB 8.0B 32.0KiB 8.0B 0.0
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13 8192 1.2MiB 150.5B 64.1KiB 8.0B 64.0KiB 8.0B 0.01
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14 16384 1.9MiB 123.5B 128.1KiB 8.0B 128.0KiB 8.0B 0.01
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15 32768 3.4MiB 110.1B 256.1KiB 8.0B 256.0KiB 8.0B 0.02
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16 65536 6.5MiB 103.3B 512.1KiB 8.0B 512.0KiB 8.0B 0.04
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17 131072 11.5MiB 91.9B 1.0MiB 8.0B 1.0MiB 8.0B 0.08
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18 262144 22.6MiB 90.2B 2.0MiB 8.0B 2.0MiB 8.0B 0.18
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19 524288 44.7MiB 89.4B 4.0MiB 8.0B 4.0MiB 8.0B 0.32
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20 1048576 88.9MiB 88.9B 8.0MiB 8.0B 8.0MiB 8.0B 0.66
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21 2097152 177.5MiB 88.7B 16.0MiB 8.0B 16.0MiB 8.0B 1.31
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22 4194304 354.5MiB 88.6B 32.0MiB 8.0B 32.0MiB 8.0B 2.67
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23 8388608 676.6MiB 84.6B 64.0MiB 8.0B 64.0MiB 8.0B 5.26
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24 16777216 1.3GiB 84.5B 128.0MiB 8.0B 128.0MiB 8.0B 10.59
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25 33554432 2.6GiB 84.5B 256.0MiB 8.0B 256.0MiB 8.0B 21.3
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26 67108864 5.3GiB 84.5B 512.0MiB 8.0B 512.0MiB 8.0B 41.81
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27 134217728 10.6GiB 84.5B 1.0GiB 8.0B 1.0GiB 8.0B 83.76
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TODO: Understand numby.jit magic (look at the results differences > 20qbits, mem usage /10; time /4)
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...
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20 1048576 39.7MiB 39.7B 112.0B 0.0B 8.0MiB 8.0B 0.16
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21 2097152 51.7MiB 25.9B 112.0B 0.0B 16.0MiB 8.0B 0.33
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22 4194304 75.7MiB 18.9B 112.0B 0.0B 32.0MiB 8.0B 0.63
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23 8388608 123.7MiB 15.5B 112.0B 0.0B 64.0MiB 8.0B 1.26
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24 16777216 187.7MiB 11.7B 112.0B 0.0B 128.0MiB 8.0B 2.51
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25 33554432 315.7MiB 9.9B 112.0B 0.0B 256.0MiB 8.0B 5.05
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26 67108864 571.7MiB 8.9B 112.0B 0.0B 512.0MiB 8.0B 10.05
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27 134217728 1.1GiB 8.5B 112.0B 0.0B 1.0GiB 8.0B 19.86
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28 268435456 2.1GiB 8.2B 112.0B 0.0B 2.0GiB 8.0B 40.79
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29 536870912 4.1GiB 8.1B 112.0B 0.0B 4.0GiB 8.0B 81.07
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30 1073741824 8.1GiB 8.1B 112.0B 0.0B 8.0GiB 8.0B 161.68
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...
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Also together with cython optimization (time /4) (but right now it seems to take only doubles):
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...
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20 1048576 23.7MiB 23.7B 8.0MiB 8.0B 8.0MiB 8.0B 0.04
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21 2097152 35.7MiB 17.8B 16.0MiB 8.0B 16.0MiB 8.0B 0.08
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22 4194304 59.7MiB 14.9B 32.0MiB 8.0B 32.0MiB 8.0B 0.15
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23 8388608 107.7MiB 13.5B 64.0MiB 8.0B 64.0MiB 8.0B 0.3
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24 16777216 171.7MiB 10.7B 128.0MiB 8.0B 128.0MiB 8.0B 0.59
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25 33554432 299.7MiB 9.4B 256.0MiB 8.0B 256.0MiB 8.0B 1.18
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26 67108864 555.7MiB 8.7B 512.0MiB 8.0B 512.0MiB 8.0B 2.35
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27 134217728 1.0GiB 8.3B 1.0GiB 8.0B 1.0GiB 8.0B 4.7
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28 268435456 2.0GiB 8.2B 2.0GiB 8.0B 2.0GiB 8.0B 9.52
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29 536870912 4.0GiB 8.1B 4.0GiB 8.0B 4.0GiB 8.0B 19.32
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30 1073741824 8.0GiB 8.0B 8.0GiB 8.0B 8.0GiB 8.0B 37.76
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"""
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_0 = Qubit(__0)
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import os
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import psutil
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import gc
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print("{:>10} {:>10} {:>10} {:>10} {:>10} {:>10} {:>10} {:>10} {:>10}".format(
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"qbits",
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"kron_len",
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"mem_used",
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"mem_per_q",
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"getsizeof",
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"getsiz/len",
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"nbytes",
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"nbytes/len",
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"time"))
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process = psutil.Process(os.getpid())
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mem_init = process.memory_info().rss
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for i in range(2, N + 1):
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start = time()
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qbits = [_0.matrix_state for _ in range(i)]
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m = kron(qbits)
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len_m = len(m)
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elapsed = time() - start
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mem_b = process.memory_info().rss - mem_init
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print("{:>10} {:>10} {:>10} {:>10} {:>10} {:>10} {:>10} {:>10} {:>10}".format(
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i,
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len(m),
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sizeof_fmt(mem_b),
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sizeof_fmt(mem_b / len_m),
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sizeof_fmt(getsizeof(m)),
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sizeof_fmt(getsizeof(m) / len_m),
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sizeof_fmt(m.nbytes),
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sizeof_fmt(m.nbytes / len_m),
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np.round(elapsed, 2)))
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gc.collect()
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if __name__ == "__main__":
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run_load_test(30)
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