Developer Reference
Intel® oneAPI Math Kernel Library Vector Mathematics Performance and Accuracy Data
                    
                        ID
                        772989
                    
                
                
                    Date
                    12/04/2020
                
                
                    Public
                
            Abs
Computes the absolute value of complex 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 | 5.44 | 3.68 | 3.08 | 1.77 | 
| LA | 2.31 | 1.80 | 1.49 | 1.21 | |
| EP | 2.31 | 1.51 | 1.25 | 0.95 | |
| double | HA | 10.15 | 9.40 | 7.83 | 3.56 | 
| LA | 10.15 | 4.77 | 4.00 | 2.73 | |
| EP | 10.15 | 4.38 | 3.65 | 2.47 | |
      Notes: 
    
 
    - Units - CPE (Clocks per Element)
- Performance was measured on "working" interval (double precision: [ -10000.0, 10000.0 ] × [ -10000.0, 10000.0 ]; single precision: [ -10000.0, 10000.0 ] × [ -10000.0, 10000.0 ]) 
- 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 | 0.56 | 0.56 | 0.56 | 0.51 | 
| LA | 1.09 | 0.83 | 0.83 | 1.05 | |
| EP | 3.76E+03 | 3.76E+03 | 3.76E+03 | 3.76E+03 | |
| double | HA | 0.81 | 0.81 | 0.81 | 0.81 | 
| LA | 1.54 | 0.91 | 0.91 | 0.91 | |
| EP | 3.88E+05 | 3.88E+05 | 3.88E+05 | 2.37E+07 | |
      NOTE: 
    
 Units - ULP (Units in the Last Place). 
   Performance Graphs:




 Parent topic: Arithmetic