Log1p
Computes a natural logarithm of vector elements that are increased by 1.
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
|
13.15
|
4.84
|
4.14
|
1.74
|
LA
|
10.65
|
2.47
|
2.26
|
1.37
| |
EP
|
8.22
|
1.82
|
1.73
|
1.16
| |
double
|
HA
|
8.62
|
8.71
|
7.39
|
3.27
|
LA
|
7.96
|
7.28
|
6.33
|
2.57
| |
EP
|
6.78
|
6.43
|
5.50
|
2.30
| |
Notes:
- Units - CPE (Clocks per Element)
- Performance was measured on "working" interval (double precision: [ 1.0, 999.0 ]; single precision: [ 1.0, 999.0 ])
- 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
|
0.50
|
0.50
|
0.50
|
0.50
|
LA
|
0.76
|
0.56
|
0.56
|
0.56
| |
EP
|
113.00
|
113.00
|
113.00
|
113.00
| |
double
|
HA
|
0.50
|
0.50
|
0.50
|
0.50
|
LA
|
1.37
|
0.78
|
0.78
|
0.78
| |
EP
|
454.00
|
454.00
|
454.00
|
1.86E+04
| |
Note:
Units - ULP (Units in the Last Place).Performance Graphs:
