Developer Reference
Visible to Intel only — GUID: GUID-75410CEF-1400-4FE7-BFDF-85B26A7E574B
Sub
Performs element by element subtraction of complex vector b from complex 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 | 2.20 | 2.16 | 1.66 | 1.53 |
LA | 2.20 | 2.16 | 1.66 | 1.53 | |
EP | 1.76 | 0.39 | 0.31 | 0.27 | |
double | HA | 11.86 | 4.24 | 3.34 | 3.00 |
LA | 11.85 | 4.24 | 3.34 | 3.00 | |
EP | 2.17 | 2.47 | 2.07 | 1.59 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ -10000.0, 10000.0 ] × [ -10000.0, 10000.0 ] for both arguments; single precision: [ -10000.0, 10000.0 ] × [ -10000.0, 10000.0 ] for both argument)
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