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exec - 2024-03-21 12:09:51 - MAQAO 2.19.4

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Stylizer  

[ 4 / 4 ] Application profile is long enough (25.03 s)

To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds.

[ 0 / 3 ] Some functions are compiled with a low optimization level (O0 or O1)

To have better performances, it is advised to help the compiler by using a proper optimization level (-O2 of higher). Warning, depending on compilers, faster optimization levels can decrease numeric accuracy.

[ 0 / 3 ] Most of time spent in analyzed modules comes from functions without compilation information

Functions without compilation information (typically not compiled with -g) cumulate 100.00% of the time spent in analyzed modules. Check that -g is present. Remark: if -g is indeed used, this can also be due to some compiler built-in functions (typically math) or statically linked libraries. This warning can be ignored in that case.

[ 0 / 3 ] Compilation of some functions is not optimized for the target processor

Architecture specific options are needed to produce efficient code for a specific processor ( -mcpu=native ).

[ 2 / 2 ] Application is correctly profiled ("Others" category represents 0.24 % 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

Optimizer

Loop IDModuleAnalysisPenalty ScoreCoverage (%)Vectorization
Ratio (%)
Vector Length
Use (%)
96execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.247.7837.3968.7
[SA] Several paths (2 paths) - Simplify control structure or force the compiler to use masked instructions. There are 2 issues ( = paths) costing 1 point each.2
33execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.62.9681.8290.91
[SA] Less than 10% of the FP ADD/SUB/MUL arithmetic operations are performed using FMA - Reorganize arithmetic expressions to exhibit potential for FMA. This issue costs 4 points.4
[SA] Inefficient vectorization: use of shorter than available vector length - Force compiler to use proper vector length. CAUTION: use of 512 bits vectors could be more expensive than 256 bits on some processors. Use intrinsics (costly and not portable). The issue costs 2 points.2
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
34execPartial or unexisting vectorization - No issue detected02.72037.5
78execPartial or unexisting vectorization - No issue detected01.51050
123execPartial or unexisting vectorization - No issue detected01.457.6951.92
95execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.40.48050
[SA] Several paths (2 paths) - Simplify control structure or force the compiler to use masked instructions. There are 2 issues ( = paths) costing 1 point each.2
[SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points.2
110execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.190.3532.6950.96
[SA] Too many paths (15 paths) - Simplify control structure. There are 15 issues ( = paths) costing 1 point each with a malus of 4 points.19
Warning! Some static analysis are missing because the loop has too many paths. Use a higher value for --maximal_path_number option.0
94execPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.50.2041.67
[SA] Several paths (3 paths) - Simplify control structure or force the compiler to use masked instructions. There are 3 issues ( = paths) costing 1 point each.3
[SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points.2
126execPartial or unexisting vectorization - No issue detected00.082055
79execPartial or unexisting vectorization - No issue detected00.08050
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