| |
LAPACK 3.2.1 DSYEV double precision
|
Structure factors double precision
|
Structure factors single precision
|
|---|
| |
Fortran
|
C++
|
Fortran
|
C++
|
Fortran
|
C++
|
|
Intel 12.1
|
1.00
|
2.51
|
1.00
|
0.99
|
1.00
|
0.97
|
| |
1.82 s
|
4.56 s
|
2.09 s
|
2.07 s
|
1.55 s
|
1.51 s
|
|
Intel 11.1
|
1.03
|
2.30
|
1.01
|
1.01
|
1.09
|
1.06
|
| |
1.88 s
|
4.18 s
|
2.12 s
|
2.11 s
|
1.69 s
|
1.65 s
|
|
Intel 10.1
|
not
|
1.43
|
not
|
1.06
|
not
|
1.05
|
| |
installed
|
2.60 s
|
installed
|
2.21 s
|
installed
|
1.62 s
|
|
Intel 9.1
|
1.32
|
1.75
|
1.07
|
1.19
|
1.03
|
1.17
|
| |
2.41 s
|
3.19 s
|
2.24 s
|
2.49 s
|
1.60 s
|
1.82 s
|
|
gcc 4.6.1
|
1.21
|
1.68
|
1.00
|
1.02
|
1.04
|
1.05
|
|
Intel math library
|
2.20 s
|
3.05 s
|
2.10 s
|
2.14 s
|
1.61 s
|
1.63 s
|
|
gcc 4.5.3
|
1.25
|
1.42
|
1.56
|
1.00
|
1.70
|
1.05
|
|
Intel math library
|
2.27 s
|
2.59 s
|
3.27 s
|
2.10 s
|
2.63 s
|
1.63 s
|
|
gcc 4.4.6
|
1.19
|
1.56
|
1.54
|
1.00
|
1.67
|
1.04
|
|
Intel math library
|
2.17 s
|
2.84 s
|
3.22 s
|
2.10 s
|
2.59 s
|
1.61 s
|
|
gcc 4.3.6
|
1.22
|
1.36
|
1.61
|
1.07
|
1.72
|
1.10
|
|
Intel math library
|
2.22 s
|
2.48 s
|
3.37 s
|
2.24 s
|
2.67 s
|
1.70 s
|
|
gcc 4.2.4
|
1.35
|
1.46
|
1.61
|
1.21
|
1.74
|
1.39
|
|
Intel math library
|
2.45 s
|
2.65 s
|
3.37 s
|
2.52 s
|
2.69 s
|
2.15 s
|
|
gcc 4.1.2
|
1.33
|
1.50
|
1.61
|
1.22
|
1.75
|
1.30
|
|
Intel math library
|
2.42 s
|
2.73 s
|
3.37 s
|
2.55 s
|
2.71 s
|
2.01 s
|
|
clang 3.1 r142719
|
not
|
1.37
|
not
|
1.09
|
not
|
1.27
|
|
Intel math library
|
applicable
|
2.49 s
|
applicable
|
2.27 s
|
applicable
|
1.97 s
|
|
clang 3.1 r142719
|
not
|
1.40
|
not
|
3.03
|
not
|
10.19
|
|
System math library
|
applicable
|
2.55 s
|
applicable
|
6.34 s
|
applicable
|
15.79 s
|
- Systematic runtime comparisons using various Intel® and GCC Fortran and C++ compilers, and a recent development version of CLANG++ (LLVM/CLANG SVN revision 142719). Runtimes relative to that of executables compiled with Intel® Fortran Version 12.1 are shown in bold. The corresponding absolute runtimes in seconds are shown below the bold numbers. See text for further details.
