Developer Reference

Intel® oneAPI Math Kernel Library Vector Mathematics Performance and Accuracy Data

ID 772989
Date 12/04/2020
Public
Document Table of Contents

Ln

Computes a natural logarithm of complex vector elements.

Performance:

  Intel® Xeon® Processor E5-2680 Intel® Xeon® Processor E5-2699 v3 Intel® Xeon® Processor E5-2699 v4 Intel® Xeon® Gold 6148 Processor
single HA 22.00 23.10 19.39 14.30
LA 16.28 15.19 13.27 8.83
EP 11.34 9.59 8.15 5.43
double HA 57.91 51.61 44.33 32.35
LA 44.37 44.45 37.89 27.43
EP 30.42 35.07 30.15 20.81
Notes:
  1. Units - CPE (Clocks per Element)
  2. Performance was measured on "working" interval (double precision: [ 0.01, 20.0 ] × [ 0.01, 20.0 ]; single precision: [ 0.01, 20.0 ] × [ 0.01, 20.0 ])

  3. Data - vectors of 1000 elements with random generated numbers.

  4. All data was collected with 64-bit libraries.

Accuracy:

  Intel® Xeon® Processor E5-2680 Intel® Xeon® Processor E5-2699 v3 Intel® Xeon® Processor E5-2699 v4 Intel® Xeon® Gold 6148 Processor
single HA 0.71 0.71 0.71 0.71
LA 2.19 2.12 2.12 2.19
EP 3.61E+03 3.61E+03 3.61E+03 3.61E+03
double HA 0.71 0.71 0.71 0.71
LA 2.09 2.09 2.09 2.09
EP 1.97E+07 1.97E+07 1.97E+07 1.97E+07
NOTE:
Units - ULP (Units in the Last Place).

Performance Graphs:

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