Developer Reference
Visible to Intel only — GUID: GUID-DCF1A34F-EA64-4C18-B2FC-5BDA0274539C
Powr
Computes a to the power b for elements of two vectors, where the elements of vector argument a are all non-negative.
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 | 10.07 | 10.19 | 8.54 | 2.82 |
LA | 10.07 | 4.51 | 3.71 | 2.61 | |
EP | 10.07 | 3.17 | 2.74 | 1.69 | |
double | HA | 18.78 | 19.79 | 16.61 | 6.47 |
LA | 18.19 | 11.40 | 9.43 | 5.42 | |
EP | 10.78 | 10.38 | 8.61 | 3.38 |
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 | 0.78 | 0.90 | 0.90 | 0.97 |
LA | 1.73 | 1.64 | 1.64 | 1.05 | |
EP | 1.87E+03 | 1.87E+03 | 1.87E+03 | 277.80 | |
double | HA | 0.51 | 0.51 | 0.51 | 0.74 |
LA | 1.02 | 1.02 | 1.02 | 1.06 | |
EP | 6.45E+07 | 6.45E+07 | 6.45E+07 | 2.02E+07 |
NOTE:
Units - ULP (Units in the Last Place).
Performance Graphs:
Parent topic: Power