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[ 4 / 4 ] Application profile is long enough (44.9 s)
To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds.
[ 3 / 3 ] Optimization level option -Ofast is used
To have better performances, it is advised to help the compiler by using a proper optimization level (-Ofast)
[ 3 / 3 ] Helper debug compilation options -g and -fno-omit-frame-pointer are used
-g option gives access to debugging informations, such are source locations and -fno-omit-frame-pointer improve the accuracy of callchains found during the application profiling.
[ 3 / 3 ] Architecture specific option -mcpu is used
[ 2 / 2 ] Application is correctly profiled ("Others" category represents 0 % of the execution time)
To have a representative profiling, it is advised that the category "Others" represents less than 20% of the execution time in order to analyze as much as possible of the user code
[ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (93.44%)
If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances.
[ 4 / 4 ] Loop profile is not flat
At least one loop coverage is greater than 4% (81.00%), representing an hotspot for the application
[ 0 / 4 ] Too little time of the experiment time spent in analyzed innermost loops (12.42%)
If the time spent in analyzed innermost loops is less than 15%, standard innermost loop optimizations such as vectorisation will have a limited impact on application performances.
[ 3 / 3 ] Less than 10% (0%) is spend in BLAS1 operations
It could be more efficient to inline by hand BLAS1 operations
[ 0 / 3 ] Cumulative Outermost/In between loops coverage (81.02%) greater than cumulative innermost loop coverage (12.42%)
Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex
[ 2 / 2 ] Less than 10% (0%) is spend in Libm/SVML (special functions)
[ 2 / 2 ] Less than 10% (0%) is spend in BLAS2 operations
BLAS2 calls usually could make a poor cache usage and could benefit from inlining.
| Loop ID | Module | Analysis | Penalty Score | Coverage (%) | Vectorization Ratio (%) | Vector Length Use (%) |
|---|---|---|---|---|---|---|
| ►2346 | exec | Partial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access. | 22 | 81 | 0 | 25 |
| ○ | [SA] Too many paths (16 paths) - Simplify control structure. There are 16 issues ( = paths) costing 1 point each with a malus of 4 points. | 20 | ||||
| ○ | [SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points. | 2 | ||||
| ○ | Warning! Some static analysis are missing because the loop has too many paths. Use a higher value for --maximal_path_number option. | 0 | ||||
| ○2241 | exec | Partial or unexisting vectorization - No issue detected | 0 | 6.94 | 0 | 25 |
| ○2158 | exec | Partial or unexisting vectorization - No issue detected | 0 | 3.5 | 0 | 25 |
| ○2488 | exec | Partial or unexisting vectorization - No issue detected | 0 | 1.64 | 0 | 25 |
| ○2301 | exec | Partial or unexisting vectorization - No issue detected | 0 | 0.26 | 0 | 25 |
| ○2070 | exec | Partial or unexisting vectorization - No issue detected | 0 | 0.05 | 0 | 0 |
| ►2347 | exec | Partial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access. | 22 | 0.02 | 0 | 25 |
| ○ | [SA] Too many paths (16 paths) - Simplify control structure. There are 16 issues ( = paths) costing 1 point each with a malus of 4 points. | 20 | ||||
| ○ | [SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points. | 2 | ||||
| ○ | Warning! Some static analysis are missing because the loop has too many paths. Use a higher value for --maximal_path_number option. | 0 | ||||
| ○2081 | exec | Partial or unexisting vectorization - No issue detected | 0 | 0.01 | 0 | 0 |
| ○2077 | exec | Partial or unexisting vectorization - No issue detected | 0 | 0.01 | 0 | 0 |
| ○2072 | exec | Partial or unexisting vectorization - No issue detected | 0 | 0.01 | 0 | 0 |