numbin 0.3.0

an efficient binary serialization format for numerical data

NumBin

An efficient binary serialization format for numerical data.

Install

pip install numbin

Usage

from numbin import NumBin
import numpy as np

nb = NumBin()
arr = np.random.rand(5, 3)

# in memory
binary = nb.dumps(arr)
print(nb.loads(binary))

# file
with open("num.bin", "wb") as f:
    nb.dump(arr, f)

with open("num.bin", "rb") as f:
    print(nb.load(f))

Benchmark

The code can be found in bench.py

Tested with AMD Ryzen 7 5800H.

================================================================================
pickle_serde
size:            1      times: min(8.065e-06)   mid(8.457e-06)  max(0.00014736) 95%(8.185e-06)  Std.(3.1934e-06)
size:         1024      times: min(9.428e-06)   mid(1.015e-05)  max(0.00014235) 95%(9.638e-06)  Std.(3.8205e-06)
size:        65536      times: min(0.000155)    mid(0.0001581)  max(0.00061054) 95%(0.00015533) Std.(2.3462e-05)
size:      3145728      times: min(0.0072165)   mid(0.0082978)  max(0.015297)   95%(0.0073169)  Std.(0.001018)
size:    201326592      times: min(1.1303)      mid(1.23)       max(1.3989)     95%(1.1323)     Std.(0.089972)
================================================================================
numbin_serde
size:            1      times: min(1.974e-06)   mid(2.084e-06)  max(0.00019909) 95%(2.013e-06)  Std.(2.1158e-06)
size:         1024      times: min(2.514e-06)   mid(2.685e-06)  max(9.9267e-05) 95%(2.574e-06)  Std.(1.7772e-06)
size:        65536      times: min(2.3535e-05)  mid(2.4196e-05) max(0.00051521) 95%(2.3595e-05) Std.(1.586e-05)
size:      3145728      times: min(0.0068677)   mid(0.0075904)  max(0.020155)   95%(0.0069143)  Std.(0.0013657)
size:    201326592      times: min(0.51976)     mid(0.66418)    max(0.74812)    95%(0.52107)    Std.(0.083191)
================================================================================
numpy_save_load
size:            1      times: min(0.00010345)  mid(0.00011227) max(0.0096088)  95%(0.00010525) Std.(0.00010952)
size:         1024      times: min(0.00010638)  mid(0.00011138) max(0.00039846) 95%(0.00010751) Std.(2.5658e-05)
size:        65536      times: min(0.00016052)  mid(0.00016934) max(0.00057942) 95%(0.00016236) Std.(2.4938e-05)
size:      3145728      times: min(0.01337)     mid(0.017721)   max(0.023641)   95%(0.013613)   Std.(0.0024529)
size:    201326592      times: min(1.5571)      mid(2.5337)     max(5.0581)     95%(1.5796)     Std.(1.1949)