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omp-cloverleaf - 2023-12-19 14:26:12 - MAQAO 2.18.0

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Stylizer  

[ 4 / 4 ] Application profile is long enough (25.09 s)

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

[ 3.00 / 3 ] Optimization level option is correctly used

[ 3.00 / 3 ] Most of time spent in analyzed modules comes from functions compiled with -g and -fno-omit-frame-pointer

-g option gives access to debugging informations, such are source locations. -fno-omit-frame-pointer improve the accuracy of callchains found during the application profiling.

[ 3.00 / 3 ] Architecture specific option -march=native 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

Optimizer

Loop IDModuleAnalysisPenalty ScoreCoverage (%)Vectorization
Ratio (%)
Vector Length
Use (%)
152omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2681098.4642.5
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 40 issues (= instructions) costing 4 points each.160
[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] 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] 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
[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
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
367omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2548.6198.243.47
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 28 issues (= instructions) costing 4 points each.112
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 25 issues ( = indirect data accesses) costing 4 point each.100
[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 constant non unit stride data access - Use array restructuring, perform loop interchange or use gather instructions to lower a bit the cost. There are 2 issues ( = data accesses) costing 2 point each.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
[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
[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
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
191omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2177.2997.4444.34
[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 24 issues (= instructions) costing 4 points each.96
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 14 issues (= instructions) costing 4 points each.56
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 10 issues ( = indirect data accesses) costing 4 point each.40
[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] 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 4 issues ( = data accesses) costing 2 point each.8
[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] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
[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
371omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.1867.0997.3743.09
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 20 issues (= instructions) costing 4 points each.80
[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 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] 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
[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] 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
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
163omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2955.498.9945.48
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 26 issues (= instructions) costing 4 points each.104
[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 indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 20 issues ( = indirect data accesses) costing 4 point each.80
[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 9 issues (= instructions) costing 1 point each.9
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.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
[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
273omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2004.5497.7843.61
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 24 issues (= instructions) costing 4 points each.96
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 23 issues ( = indirect data accesses) costing 4 point each.92
[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] More than 20% of the loads are accessing the stack - Perform loop splitting to decrease pressure on registers. This issue costs 2 points.2
[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 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
[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
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
253omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.24.516.514.56
[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
174omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2814.4494.1843.19
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 26 issues (= instructions) costing 4 points each.104
[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 indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 15 issues ( = indirect data accesses) costing 4 point each.60
[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 13 issues (= instructions) costing 1 point each.13
[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
[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
[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
[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
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
202omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.1904.3487.7840.05
[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 17 issues (= instructions) costing 4 points each.68
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 14 issues (= instructions) costing 4 points each.56
[SA] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 10 issues ( = indirect data accesses) costing 4 point each.40
[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 14 issues (= instructions) costing 1 point each.14
[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] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
[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
[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
[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 1 issues ( = data accesses) costing 2 point each.2
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
159omp-cloverleafPartial or unexisting vectorization - Use pragma to force vectorization and check potential dependencies between array access.2274.0897.4443.27
[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 22 issues (= instructions) costing 4 points each.88
[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 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] 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
[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
[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
[SA] Presence of special instructions executing on a single port (BROADCAST) - Simplify data access and try to get stride 1 access. There are 1 issues (= instructions) costing 1 point each.1
Warning! There is no dynamic data for this loop. Some checks can not been performed.0
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