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Table 4 The test results of a 4-GB file on different cores

From: A privacy protection-oriented parallel fully homomorphic encryption algorithm in cyber physical systems

No. P Max Map time (seconds) Reduce time (seconds) General time (seconds) Map SP General SP
1 901 120 1025 1.0 1.0
4 266 119 389 3.5 2.6
8 125 120 251 7.2 4.1
12 92 119 216 9.8 4.8
16 65 120 194 13.9 5.3
24 47 118 211 19.2 4.9
32 33 119 196 27.3 5.2