Developer Reference
Visible to Intel only — GUID: GUID-CB516EFB-C9F3-408A-A116-FC3C58C99594
Exp2
Computes the base 2 exponential of 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 | 2.79 | 2.68 | 2.21 | 0.57 |
LA | 2.79 | 2.68 | 2.21 | 0.57 | |
EP | 2.79 | 2.68 | 2.21 | 0.57 | |
double | HA | 5.62 | 4.47 | 3.75 | 1.26 |
LA | 5.62 | 4.47 | 3.75 | 1.26 | |
EP | 5.62 | 4.47 | 3.75 | 1.26 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ -707.0, 707.0 ]; single precision: [ -87.0, 87.0 ])
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 | 0.62 | 0.62 | 0.62 | 0.62 |
LA | 0.62 | 0.62 | 0.62 | 0.62 | |
EP | 0.62 | 0.62 | 0.62 | 0.62 | |
double | HA | 0.75 | 0.75 | 0.75 | 0.75 |
LA | 0.75 | 0.75 | 0.75 | 0.75 | |
EP | 0.75 | 0.75 | 0.75 | 0.75 |
NOTE:
Units - ULP (Units in the Last Place).
Performance Graphs:
Parent topic: Exponential