Developer Reference
Visible to Intel only — GUID: GUID-BC560075-C990-46DB-AC93-CF8445E994C9
Log10
Computes a denary logarithm 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 | 3.65 | 3.64 | 3.11 | 1.22 |
LA | 2.26 | 1.62 | 1.55 | 0.66 | |
EP | 2.26 | 1.12 | 1.02 | 0.60 | |
double | HA | 21.04 | 6.54 | 5.57 | 2.56 |
LA | 6.23 | 5.39 | 4.63 | 2.23 | |
EP | 5.41 | 5.07 | 4.28 | 1.66 |
Notes:
- Units - CPE (Clocks per Element)
Performance was measured on "working" interval (double precision: [ 0.1, 10000.0 ] for HA and LA, [ 1.2, 10000.0 ] for EP; single precision: [ 0.1, 10000.0 ] for HA and LA, [ 1.2, 10000.0 ] for EP)
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 | 0.54 | 0.89 | 0.89 | 1.40 | |
EP | 224.00 | 224.00 | 224.00 | 10.90 | |
double | HA | 0.50 | 0.50 | 0.50 | 0.50 |
LA | 0.96 | 0.62 | 0.62 | 0.59 | |
EP | 2.73E+03 | 2.73E+03 | 2.73E+03 | 1.66E+05 |
NOTE:
Units - ULP (Units in the Last Place).
Performance Graphs:
Parent topic: Logarithmic