Developer Reference
Intel® oneAPI Math Kernel Library Vector Mathematics Performance and Accuracy Data
                    
                        ID
                        772989
                    
                
                
                    Date
                    12/04/2020
                
                
                    Public
                
            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