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gmx_mpi - 2024-08-02 17:16:32 - MAQAO 2.20.7

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▼Optimizer

Loop IDAnalysisPenalty Score
►Loop 839 - libgromacs_mpi.so.9.0.0+Execution Time: 36 % - Vectorization Ratio: 89.12 % - Vector Length Use: 82.65 %
►Loop Computation Issues+256
►+[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 64 issues (= instructions) costing 4 points each.256
○Number of RCP instructions: 32
Number of RSQRT instructions: 32
►Data Access Issues+49
○[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 3 issues ( = data accesses) costing 2 point each.6
○[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 special instructions executing on a single port (INSERT/EXTRACT, BROADCAST) - Simplify data access and try to get stride 1 access. There are 25 issues (= instructions) costing 1 point each.25
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 22
○[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+22
○[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 3 issues ( = data accesses) costing 2 point each.6
○[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+27
►+[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 25 issues (= instructions) costing 1 point each.25
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 22
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 837 - libgromacs_mpi.so.9.0.0+Execution Time: 14 % - Vectorization Ratio: 88.34 % - Vector Length Use: 82.68 %
►Loop Computation Issues+256
►+[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 64 issues (= instructions) costing 4 points each.256
○Number of RCP instructions: 32
Number of RSQRT instructions: 32
►Data Access Issues+49
○[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 3 issues ( = data accesses) costing 2 point each.6
○[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 special instructions executing on a single port (INSERT/EXTRACT, BROADCAST) - Simplify data access and try to get stride 1 access. There are 25 issues (= instructions) costing 1 point each.25
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 22
○[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+22
○[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 3 issues ( = data accesses) costing 2 point each.6
○[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+27
►+[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 25 issues (= instructions) costing 1 point each.25
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 22
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 846 - libgromacs_mpi.so.9.0.0+Execution Time: 6 % - Vectorization Ratio: 87.82 % - Vector Length Use: 84.20 %
►Loop Computation Issues+384
►+[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 96 issues (= instructions) costing 4 points each.384
○Number of RCP instructions: 64
Number of RSQRT instructions: 32
►Data Access Issues+53
○[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 1 issues ( = indirect data accesses) costing 4 point each.4
►+[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 35 issues (= instructions) costing 1 point each.35
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 32
○[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+16
○[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 1 issues ( = indirect data accesses) costing 4 point each.4
►Inefficient Vectorization+37
►+[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 35 issues (= instructions) costing 1 point each.35
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 32
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 17265 - libgromacs_mpi.so.9.0.0+Execution Time: 4 % - Vectorization Ratio: 65.71 % - Vector Length Use: 37.54 %
►Loop Computation Issues+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
►Control Flow Issues+36
○[SA] Too many paths (30 paths) - Simplify control structure. There are 30 issues ( = paths) costing 1 point each with a malus of 4 points.34
○[SA] Non innermost loop (Outermost) - Collapse loop with innermost ones. This issue costs 2 points.2
►Data Access Issues+56
►+[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 4 issues (= instructions) costing 4 points each.16
○Number of ZMM GATHER/SCATTER instructions: 4
►+[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, COMPRESS/EXPAND, SHUFFLE/PERM, BROADCAST) - Simplify data access and try to get stride 1 access. There are 38 issues (= instructions) costing 1 point each.38
○Number of INSERT/EXTRACT instructions: 10
Number of ZMM COMPRESS/EXPAND instructions: 2
Number of XMM SHUFFLE/PERM instructions: 6
Number of ZMM SHUFFLE/PERM instructions: 5
Number of XMM BROADCAST instructions: 8
Number of YMM BROADCAST instructions: 1
Number of ZMM BROADCAST instructions: 6
○[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+36
○[SA] Too many paths (30 paths) - Simplify control structure. There are 30 issues ( = paths) costing 1 point each with a malus of 4 points.34
○[SA] Non innermost loop (Outermost) - Collapse loop with innermost ones. This issue costs 2 points.2
►Inefficient Vectorization+56
○[SA] Presence of expensive instructions (GATHER/SCATTER) - Use array restructuring. There are 4 issues (= instructions) costing 4 points each.16
►+[SA] Presence of special instructions executing on a single port (INSERT/EXTRACT, COMPRESS/EXPAND, SHUFFLE/PERM, BROADCAST) - Simplify data access and try to get stride 1 access. There are 38 issues (= instructions) costing 1 point each.38
○Number of INSERT/EXTRACT instructions: 10
Number of ZMM COMPRESS/EXPAND instructions: 2
Number of XMM SHUFFLE/PERM instructions: 6
Number of ZMM SHUFFLE/PERM instructions: 5
Number of XMM BROADCAST instructions: 8
Number of YMM BROADCAST instructions: 1
Number of ZMM BROADCAST instructions: 6
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 844 - libgromacs_mpi.so.9.0.0+Execution Time: 2 % - Vectorization Ratio: 88.67 % - Vector Length Use: 85.30 %
►Loop Computation Issues+384
►+[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 96 issues (= instructions) costing 4 points each.384
○Number of RCP instructions: 64
Number of RSQRT instructions: 32
►Data Access Issues+59
○[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] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 3 issues ( = indirect data accesses) costing 4 point each.12
►+[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 37 issues (= instructions) costing 1 point each.37
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 34
○[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+20
○[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] Presence of indirect accesses - Use array restructuring or gather instructions to lower the cost. There are 3 issues ( = indirect data accesses) costing 4 point each.12
►Inefficient Vectorization+39
►+[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 37 issues (= instructions) costing 1 point each.37
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BROADCAST instructions: 34
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 17547 - libgromacs_mpi.so.9.0.0+Execution Time: 2 % - Vectorization Ratio: 80.17 % - Vector Length Use: 21.69 %
►Loop Computation Issues+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
►Control Flow Issues+105
○[SA] Too many paths (99 paths) - Simplify control structure. There are 99 issues ( = paths) costing 1 point each with a malus of 4 points.103
○[SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points.2
►Data Access Issues+22
►+[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 20 issues (= instructions) costing 1 point each.20
○Number of INSERT/EXTRACT instructions: 2
Number of XMM BROADCAST instructions: 18
○[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+105
○[SA] Too many paths (99 paths) - Simplify control structure. There are 99 issues ( = paths) costing 1 point each with a malus of 4 points.103
○[SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points.2
►Inefficient Vectorization+22
►+[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 20 issues (= instructions) costing 1 point each.20
○Number of INSERT/EXTRACT instructions: 2
Number of XMM BROADCAST instructions: 18
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 840 - libgromacs_mpi.so.9.0.0+Execution Time: 1 % - Vectorization Ratio: 87.00 % - Vector Length Use: 81.10 %
►Loop Computation Issues+256
►+[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 64 issues (= instructions) costing 4 points each.256
○Number of RCP instructions: 32
Number of RSQRT instructions: 32
►Control Flow Issues+3
○[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
►Data Access Issues+45
○[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 1 issues ( = indirect data accesses) costing 4 point each.4
►+[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 27 issues (= instructions) costing 1 point each.27
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BLEND/MERGE instructions: 1
Number of ZMM BROADCAST instructions: 23
○[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+19
○[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] 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 1 issues ( = indirect data accesses) costing 4 point each.4
►Inefficient Vectorization+29
►+[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 27 issues (= instructions) costing 1 point each.27
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BLEND/MERGE instructions: 1
Number of ZMM BROADCAST instructions: 23
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
►Loop 17554 - libgromacs_mpi.so.9.0.0+Execution Time: 1 % - Vectorization Ratio: 8.66 % - Vector Length Use: 8.02 %
►Control Flow Issues+493
○[SA] Too many paths (487 paths) - Simplify control structure. There are 487 issues ( = paths) costing 1 point each with a malus of 4 points.491
○[SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points.2
►Data Access Issues+33
►+[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 31 issues (= instructions) costing 1 point each.31
○Number of INSERT/EXTRACT instructions: 21
Number of XMM BLEND/MERGE instructions: 6
Number of XMM BROADCAST instructions: 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
►Vectorization Roadblocks+493
○[SA] Too many paths (487 paths) - Simplify control structure. There are 487 issues ( = paths) costing 1 point each with a malus of 4 points.491
○[SA] Non innermost loop (InBetween) - Collapse loop with innermost ones. This issue costs 2 points.2
►Inefficient Vectorization+31
►+[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 31 issues (= instructions) costing 1 point each.31
○Number of INSERT/EXTRACT instructions: 21
Number of XMM BLEND/MERGE instructions: 6
Number of XMM BROADCAST instructions: 4
►Loop 17641 - libgromacs_mpi.so.9.0.0+Execution Time: 1 % - Vectorization Ratio: 0.00 % - Vector Length Use: 12.50 %
►Data Access Issues+10
○[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 5 issues ( = data accesses) costing 2 point each.10
►Vectorization Roadblocks+10
○[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 5 issues ( = data accesses) costing 2 point each.10
►Loop 838 - libgromacs_mpi.so.9.0.0+Execution Time: 1 % - Vectorization Ratio: 87.87 % - Vector Length Use: 82.37 %
►Loop Computation Issues+256
►+[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 64 issues (= instructions) costing 4 points each.256
○Number of RCP instructions: 32
Number of RSQRT instructions: 32
►Control Flow Issues+3
○[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
►Data Access Issues+46
○[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 1 issues ( = indirect data accesses) costing 4 point each.4
►+[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 28 issues (= instructions) costing 1 point each.28
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BLEND/MERGE instructions: 2
Number of ZMM BROADCAST instructions: 23
○[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+19
○[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] 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 1 issues ( = indirect data accesses) costing 4 point each.4
►Inefficient Vectorization+30
►+[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 28 issues (= instructions) costing 1 point each.28
○Number of INSERT/EXTRACT instructions: 3
Number of ZMM BLEND/MERGE instructions: 2
Number of ZMM BROADCAST instructions: 23
○[SA] Inefficient vectorization: use of masked instructions - Simplify control structure. The issue costs 2 points.2
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