Developer Reference
Visible to Intel only — GUID: GUID-E11B09F3-1181-440B-ABCA-6A9AFDE31FE7
Powx
Raises each element of a real vector to the constant power, that is, computes a to power b, where b is a scalar.
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 | 9.34 | 9.82 | 8.25 | 4.89 |
LA | 9.34 | 8.26 | 7.25 | 4.69 | |
EP | 3.99 | 2.86 | 2.48 | 1.69 | |
double | HA | 42.56 | 18.89 | 15.91 | 9.48 |
LA | 16.38 | 18.20 | 15.35 | 8.49 | |
EP | 9.33 | 9.47 | 7.93 | 4.85 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ 5.0, 100.0 ] for both arguments; single precision: [ 0.1, 10.0 ] for both arguments)
Data - vectors of 1000 elements with random generated numbers.
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 | 0.61 | 0.61 | 0.61 |
LA | 2.63 | 2.59 | 2.59 | 2.59 | |
EP | 4.52E+03 | 4.52E+03 | 4.52E+03 | 1.77E+03 | |
double | HA | 0.51 | 0.51 | 0.51 | 0.56 |
LA | 2.42 | 2.42 | 2.42 | 2.42 | |
EP | 2.12E+08 | 2.12E+08 | 2.12E+08 | 2.12E+08 |
NOTE:
Units - ULP (Units in the Last Place).
Performance Graphs:
Parent topic: Power