InvSqrt
Computes an inverse square root of real 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
|
1.32
|
0.92
|
0.79
|
0.51
|
LA
|
1.32
|
0.64
|
0.54
|
0.42
| |
EP
|
0.86
|
0.64
|
0.54
|
0.22
| |
double
|
HA
|
5.39
|
3.57
|
3.05
|
1.10
|
LA
|
5.19
|
3.57
|
3.02
|
0.93
| |
EP
|
4.38
|
3.29
|
2.69
|
0.77
| |
Notes:
- Units - CPE (Clocks per Element)
- Performance was measured on "working" interval (double precision: [ 0.1, 10000.0 ]; single precision: [ 0.1, 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
|
0.77
|
0.50
|
0.50
|
0.55
|
LA
|
2.74
|
2.72
|
2.72
|
0.89
| |
EP
|
2.74
|
2.72
|
2.72
|
857.00
| |
double
|
HA
|
0.52
|
0.52
|
0.52
|
0.62
|
LA
|
1.55
|
1.42
|
1.42
|
1.06
| |
EP
|
2.76E+05
|
2.76E+05
|
2.76E+05
|
3.56E+07
| |
Note:
Units - ULP (Units in the Last Place).Performance Graphs:
