Developer Reference
Visible to Intel only — GUID: GUID-2C496D58-DEB1-4573-BF79-F0404E1A736E
Sub
Performs element-by-element subtraction of real vector b from real vector a.
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 | 0.35 | 0.25 | 0.21 | 0.16 |
LA | 0.35 | 0.25 | 0.21 | 0.16 | |
EP | 0.35 | 0.25 | 0.21 | 0.16 | |
double | HA | 1.67 | 0.45 | 0.38 | 0.26 |
LA | 1.67 | 0.45 | 0.38 | 0.26 | |
EP | 1.67 | 0.45 | 0.38 | 0.26 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ -10000.0, 10000.0 ] for both arguments; single precision: [ -10000.0, 10000.0 ] 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 | 0.50 | 0.50 | 0.50 | 0.50 |
LA | 0.50 | 0.50 | 0.50 | 0.50 | |
EP | 0.50 | 0.50 | 0.50 | 0.50 | |
double | HA | 0.50 | 0.50 | 0.50 | 0.50 |
LA | 0.50 | 0.50 | 0.50 | 0.50 | |
EP | 0.50 | 0.50 | 0.50 | 0.50 |
NOTE:
Units - ULP (Units in the Last Place).
Performance Graphs:
Parent topic: Arithmetic