Developer Reference

  • 2021
  • 12/04/2020
  • Public Content

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:
  1. Units - CPE (Clocks per Element)
  2. 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)
  3. Data - vectors of 1000 elements with random generated numbers.
  4. 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:
 

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.