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exec - 2024-04-26 20:22:20 - MAQAO 2.20.0

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Stylizer  

[ 4 / 4 ] Application profile is long enough (122.1 s)

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

[ 1.19 / 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.

[ 1.19 / 3 ] Most of time spent in analyzed modules comes from functions without compilation information

Functions without compilation information (typically not compiled with -g) cumulate 60.29% 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.

[ 1.19 / 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 ( -x(target) or -ax(target) ).

[ 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

Optimizer

Loop IDAnalysisPenalty Score
Loop 121 - exec+Execution Time: 2 % - Vectorization Ratio: 96.51 % - Vector Length Use: 44.01 %
Loop Computation Issues+98
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 24 issues (= instructions) costing 4 points each.96
[SA] Presence of a large number of scalar integer instructions - Simplify loop structure, perform loop splitting or perform unroll and jam. This issue costs 2 points.2
Control Flow Issues+3
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[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
Data Access Issues+123
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 12 issues ( = indirect data accesses) costing 4 point each.48
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 16 issues (= instructions) costing 4 points each.64
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 11 issues (= instructions) costing 1 point each.11
Vectorization Roadblocks+51
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[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] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 12 issues ( = indirect data accesses) costing 4 point each.48
Inefficient Vectorization+77
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 16 issues (= instructions) costing 4 points each.64
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 11 issues (= instructions) costing 1 point each.11
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
Loop 129 - exec+Execution Time: 2 % - Vectorization Ratio: 95.82 % - Vector Length Use: 43.53 %
Loop Computation Issues+98
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 24 issues (= instructions) costing 4 points each.96
[SA] Presence of a large number of scalar integer instructions - Simplify loop structure, perform loop splitting or perform unroll and jam. This issue costs 2 points.2
Control Flow Issues+3
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[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
Data Access Issues+132
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 14 issues ( = indirect data accesses) costing 4 point each.56
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 16 issues (= instructions) costing 4 points each.64
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 12 issues (= instructions) costing 1 point each.12
Vectorization Roadblocks+59
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[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] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 14 issues ( = indirect data accesses) costing 4 point each.56
Inefficient Vectorization+78
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 16 issues (= instructions) costing 4 points each.64
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 12 issues (= instructions) costing 1 point each.12
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
Loop 664 - exec+Execution Time: 2 % - Vectorization Ratio: 96.78 % - Vector Length Use: 43.31 %
Loop Computation Issues+128
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 32 issues (= instructions) costing 4 points each.128
Control Flow Issues+6
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
[SA] Several paths (4 paths) - Simplify control structure or force the compiler to use masked instructions. There are 4 issues ( = paths) costing 1 point each.4
Data Access Issues+136
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 14 issues ( = indirect data accesses) costing 4 point each.56
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 19 issues (= instructions) costing 4 points each.76
[SA] Presence of special instructions executing on a single port (BROADCAST) - Simplify data access and try to get stride 1 access. There are 2 issues (= instructions) costing 1 point each.2
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+62
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
[SA] Several paths (4 paths) - Simplify control structure or force the compiler to use masked instructions. There are 4 issues ( = paths) costing 1 point each.4
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 14 issues ( = indirect data accesses) costing 4 point each.56
Inefficient Vectorization+80
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 19 issues (= instructions) costing 4 points each.76
[SA] Presence of special instructions executing on a single port (BROADCAST) - Simplify data access and try to get stride 1 access. There are 2 issues (= instructions) costing 1 point each.2
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
Loop 192 - exec+Execution Time: 2 % - Vectorization Ratio: 97.44 % - Vector Length Use: 45.03 %
Loop Computation Issues+36
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 8 issues (= instructions) costing 4 points each.32
[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
Control Flow Issues+2
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
Data Access Issues+36
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 4 issues ( = indirect data accesses) costing 4 point each.16
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 5 issues (= instructions) costing 4 points each.20
Vectorization Roadblocks+18
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 4 issues ( = indirect data accesses) costing 4 point each.16
Inefficient Vectorization+20
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 5 issues (= instructions) costing 4 points each.20
Loop 101 - exec+Execution Time: 2 % - Vectorization Ratio: 98.82 % - Vector Length Use: 42.21 %
Loop Computation Issues+18
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 4 issues (= instructions) costing 4 points each.16
[SA] Presence of a large number of scalar integer instructions - Simplify loop structure, perform loop splitting or perform unroll and jam. This issue costs 2 points.2
Control Flow Issues+2
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
Data Access Issues+310
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 24 issues ( = indirect data accesses) costing 4 point each.96
[SA] Inefficient vectorization: more than 10% of the vector loads instructions are unaligned - When allocating arrays, don’t forget to align them. There are 26 issues ( = arrays) costing 2 points each52
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 40 issues (= instructions) costing 4 points each.160
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+98
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 24 issues ( = indirect data accesses) costing 4 point each.96
Inefficient Vectorization+160
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 40 issues (= instructions) costing 4 points each.160
Loop 245 - exec+Execution Time: 2 % - Vectorization Ratio: 98.74 % - Vector Length Use: 42.92 %
Loop Computation Issues+34
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 8 issues (= instructions) costing 4 points each.32
[SA] Presence of a large number of scalar integer instructions - Simplify loop structure, perform loop splitting or perform unroll and jam. This issue costs 2 points.2
Control Flow Issues+2
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
Data Access Issues+274
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 26 issues ( = indirect data accesses) costing 4 point each.104
[SA] Inefficient vectorization: more than 10% of the vector loads instructions are unaligned - When allocating arrays, don’t forget to align them. There are 28 issues ( = arrays) costing 2 points each56
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+106
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 26 issues ( = indirect data accesses) costing 4 point each.104
Inefficient Vectorization+112
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
Loop 160 - exec+Execution Time: 2 % - Vectorization Ratio: 98.43 % - Vector Length Use: 44.29 %
Loop Computation Issues+112
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 28 issues (= instructions) costing 4 points each.112
Control Flow Issues+2
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
Data Access Issues+142
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 17 issues ( = indirect data accesses) costing 4 point each.68
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 18 issues (= instructions) costing 4 points each.72
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+70
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 2 issues (= calls) costing 1 point each.2
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 17 issues ( = indirect data accesses) costing 4 point each.68
Inefficient Vectorization+74
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 18 issues (= instructions) costing 4 points each.72
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
Loop 247 - exec+Execution Time: 1 % - Vectorization Ratio: 98.11 % - Vector Length Use: 42.26 %
Loop Computation Issues+66
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 16 issues (= instructions) costing 4 points each.64
[SA] Presence of a large number of scalar integer instructions - Simplify loop structure, perform loop splitting or perform unroll and jam. This issue costs 2 points.2
Control Flow Issues+1
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
Data Access Issues+329
[SA] Presence of constant non unit stride data access - Use array restructuring, perform loop interchange or use gather instructions to lower a bit the cost. There are 6 issues ( = data accesses) costing 2 point each.12
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 22 issues ( = indirect data accesses) costing 4 point each.88
[SA] Inefficient vectorization: more than 10% of the vector loads instructions are unaligned - When allocating arrays, don’t forget to align them. There are 30 issues ( = arrays) costing 2 points each60
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 40 issues (= instructions) costing 4 points each.160
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BROADCAST) - Simplify data access and try to get stride 1 access. There are 7 issues (= instructions) costing 1 point each.7
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+101
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[SA] Presence of constant non unit stride data access - Use array restructuring, perform loop interchange or use gather instructions to lower a bit the cost. There are 6 issues ( = data accesses) costing 2 point each.12
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 22 issues ( = indirect data accesses) costing 4 point each.88
Inefficient Vectorization+167
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 40 issues (= instructions) costing 4 points each.160
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BROADCAST) - Simplify data access and try to get stride 1 access. There are 7 issues (= instructions) costing 1 point each.7
Loop 113 - exec+Execution Time: 1 % - Vectorization Ratio: 96.40 % - Vector Length Use: 44.30 %
Loop Computation Issues+98
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 24 issues (= instructions) costing 4 points each.96
[SA] Presence of a large number of scalar integer instructions - Simplify loop structure, perform loop splitting or perform unroll and jam. This issue costs 2 points.2
Control Flow Issues+1
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
Data Access Issues+247
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 19 issues ( = indirect data accesses) costing 4 point each.76
[SA] Inefficient vectorization: more than 10% of the vector loads instructions are unaligned - When allocating arrays, don’t forget to align them. There are 21 issues ( = arrays) costing 2 points each42
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 15 issues (= instructions) costing 1 point each.15
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+77
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 19 issues ( = indirect data accesses) costing 4 point each.76
Inefficient Vectorization+129
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 15 issues (= instructions) costing 1 point each.15
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
Loop 105 - exec+Execution Time: 1 % - Vectorization Ratio: 95.56 % - Vector Length Use: 43.47 %
Loop Computation Issues+96
[SA] Presence of expensive FP instructions - Perform hoisting, change algorithm, use SVML or proper numerical library or perform value profiling (count the number of distinct input values). There are 24 issues (= instructions) costing 4 points each.96
Control Flow Issues+1
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
Data Access Issues+267
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 22 issues ( = indirect data accesses) costing 4 point each.88
[SA] Inefficient vectorization: more than 10% of the vector loads instructions are unaligned - When allocating arrays, don’t forget to align them. There are 24 issues ( = arrays) costing 2 points each48
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 17 issues (= instructions) costing 1 point each.17
[SA] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
Vectorization Roadblocks+89
[SA] Presence of calls - Inline either by compiler or by hand and use SVML for libm calls. There are 1 issues (= calls) costing 1 point each.1
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 22 issues ( = indirect data accesses) costing 4 point each.88
Inefficient Vectorization+131
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, BLEND/MERGE, BROADCAST) - Simplify data access and try to get stride 1 access. There are 17 issues (= instructions) costing 1 point each.17
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
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