| gcc-dflt | gcc-O2 | gcc-O3 | armclang-dflt | armclang-O2 | armclang-O3 |
|---|---|---|---|---|---|
[ 3 / 3 ] Host configuration allows retrieval of all necessary metrics. | [ 3 / 3 ] Host configuration allows retrieval of all necessary metrics. | [ 3 / 3 ] Host configuration allows retrieval of all necessary metrics. | [ 3 / 3 ] Host configuration allows retrieval of all necessary metrics. | [ 3 / 3 ] Host configuration allows retrieval of all necessary metrics. | [ 3 / 3 ] Host configuration allows retrieval of all necessary metrics. |
[ 3 / 3 ] Most of time spent in analyzed modules comes from functions with source/debug info -g option gives access to debugging informations, such are source locations. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with source/debug info -g option gives access to debugging informations, such are source locations. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with source/debug info -g option gives access to debugging informations, such are source locations. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with source/debug info -g option gives access to debugging informations, such are source locations. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with source/debug info -g option gives access to debugging informations, such are source locations. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with source/debug info -g option gives access to debugging informations, such are source locations. |
[ 3 / 3 ] Most of time spent in analyzed modules comes from functions with compilation options informations and -fno-omit-frame-pointer is present -fno-omit-frame-pointer improves the accuracy of callchains found during the application profiling. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with compilation options informations and -fno-omit-frame-pointer is present -fno-omit-frame-pointer improves the accuracy of callchains found during the application profiling. | [ 3 / 3 ] Most of time spent in analyzed modules comes from functions with compilation options informations and -fno-omit-frame-pointer is present -fno-omit-frame-pointer improves the accuracy of callchains found during the application profiling. | [ 0 / 3 ] Most of time spent in analyzed modules comes from functions without compilation options informations Functions without compilation options information cumulate 82.02% of the time spent in analyzed modules. For engine_linuxa64_ompi, check that -g is present. | [ 0 / 3 ] Most of time spent in analyzed modules comes from functions without compilation options informations Functions without compilation options information cumulate 81.49% of the time spent in analyzed modules. For engine_linuxa64_ompi, check that -g is present. | [ 0 / 3 ] Most of time spent in analyzed modules comes from functions without compilation options informations Functions without compilation options information cumulate 82.21% of the time spent in analyzed modules. For engine_linuxa64_ompi, check that -g is present. |
[ 2 / 2 ] Application is correctly profiled ("Others" category represents 1.41 % 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 | [ 2 / 2 ] Application is correctly profiled ("Others" category represents 1.17 % 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 | [ 2 / 2 ] Application is correctly profiled ("Others" category represents 1.43 % 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 | [ 2 / 2 ] Application is correctly profiled ("Others" category represents 0.43 % 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 | [ 2 / 2 ] Application is correctly profiled ("Others" category represents 0.42 % 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 | [ 2 / 2 ] Application is correctly profiled ("Others" category represents 0.43 % 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 |
[ 3 / 3 ] Optimization level option is correctly used | [ 3 / 3 ] Optimization level option is correctly used | [ 3 / 3 ] Optimization level option is correctly used | [ 2.99 / 3 ] Optimization level is unknown for some functions (compilation options info are not available) 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. | [ 2.99 / 3 ] Optimization level is unknown for some functions (compilation options info are not available) 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. | [ 2.99 / 3 ] Optimization level is unknown for some functions (compilation options info are not available) 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 ] Compilation of some functions is not optimized for the target processor Application run on the ARM_NEOVERSE_N1 micro-architecture while the code was specialized for armv8-a. Architecture specific options are needed to produce efficient code for a specific processor ( -mcpu=native ). | [ 2.99 / 3 ] Most of time spent in analyzed modules (99.56%) comes from functions compiled with architecture specialization option -mcpu | [ 2.99 / 3 ] Most of time spent in analyzed modules (99.55%) comes from functions compiled with architecture specialization option -mcpu | [ 0 / 3 ] Architecture specific options are unknown for some functions (compilation options info are not available) Application run on the ARM_NEOVERSE_N1 micro-architecture while the code was specialized for armv8-a. Architecture specific options are needed to produce efficient code for a specific processor ( -mcpu=native ). | [ 2.99 / 3 ] Most of time spent in analyzed modules (99.52%) comes from functions compiled with architecture specialization option -mcpu | [ 2.99 / 3 ] Most of time spent in analyzed modules (99.53%) comes from functions compiled with architecture specialization option -mcpu |
[ 4 / 4 ] Application profile is long enough (3335.41 s) To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds. | [ 4 / 4 ] Application profile is long enough (3490.52 s) To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds. | [ 4 / 4 ] Application profile is long enough (3277.50 s) To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds. | [ 4 / 4 ] Application profile is long enough (3445.96 s) To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds. | [ 4 / 4 ] Application profile is long enough (3454.51 s) To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds. | [ 4 / 4 ] Application profile is long enough (3445.01 s) To have good quality measurements, it is advised that the application profiling time is greater than 10 seconds. |
[ 0 / 0 ] Fastmath not used Consider to add ffast-math to compilation flags (or replace -O3 with -Ofast) to unlock potential extra speedup by relaxing floating-point computation consistency. Warning: floating-point accuracy may be reduced and the compliance to IEEE/ISO rules/specifications for math functions will be relaxed, typically 'errno' will no longer be set after calling some math functions. | [ 0 / 0 ] Fastmath not used Consider to add ffast-math to compilation flags (or replace -O3 with -Ofast) to unlock potential extra speedup by relaxing floating-point computation consistency. Warning: floating-point accuracy may be reduced and the compliance to IEEE/ISO rules/specifications for math functions will be relaxed, typically 'errno' will no longer be set after calling some math functions. | [ 0 / 0 ] Fastmath not used Consider to add ffast-math to compilation flags (or replace -O3 with -Ofast) to unlock potential extra speedup by relaxing floating-point computation consistency. Warning: floating-point accuracy may be reduced and the compliance to IEEE/ISO rules/specifications for math functions will be relaxed, typically 'errno' will no longer be set after calling some math functions. | Not available for this run | Not available for this run | Not available for this run |
[ 1 / 1 ] Lstopo present. The Topology lstopo report will be generated. | [ 1 / 1 ] Lstopo present. The Topology lstopo report will be generated. | [ 1 / 1 ] Lstopo present. The Topology lstopo report will be generated. | [ 1 / 1 ] Lstopo present. The Topology lstopo report will be generated. | [ 1 / 1 ] Lstopo present. The Topology lstopo report will be generated. | [ 1 / 1 ] Lstopo present. The Topology lstopo report will be generated. |
| gcc-dflt | gcc-O2 | gcc-O3 | armclang-dflt | armclang-O2 | armclang-O3 |
|---|---|---|---|---|---|
[ 4 / 4 ] CPU activity is good CPU cores are active 99.69% of time | [ 4 / 4 ] CPU activity is good CPU cores are active 99.75% of time | [ 4 / 4 ] CPU activity is good CPU cores are active 99.48% of time | [ 4 / 4 ] CPU activity is good CPU cores are active 99.62% of time | [ 4 / 4 ] CPU activity is good CPU cores are active 99.59% of time | [ 4 / 4 ] CPU activity is good CPU cores are active 99.70% of time |
[ 4 / 4 ] Affinity is good (99.99%) Threads are not migrating to CPU cores: probably successfully pinned | [ 4 / 4 ] Affinity is good (99.99%) Threads are not migrating to CPU cores: probably successfully pinned | [ 4 / 4 ] Affinity is good (99.99%) Threads are not migrating to CPU cores: probably successfully pinned | [ 4 / 4 ] Affinity is good (99.99%) Threads are not migrating to CPU cores: probably successfully pinned | [ 4 / 4 ] Affinity is good (100.00%) Threads are not migrating to CPU cores: probably successfully pinned | [ 4 / 4 ] Affinity is good (99.99%) Threads are not migrating to CPU cores: probably successfully pinned |
[ 3 / 3 ] Functions mostly use all threads Functions running on a reduced number of threads (typically sequential code) cover less than 10% of application walltime (0.00%) | [ 3 / 3 ] Functions mostly use all threads Functions running on a reduced number of threads (typically sequential code) cover less than 10% of application walltime (0.00%) | [ 3 / 3 ] Functions mostly use all threads Functions running on a reduced number of threads (typically sequential code) cover less than 10% of application walltime (0.00%) | [ 3 / 3 ] Functions mostly use all threads Functions running on a reduced number of threads (typically sequential code) cover less than 10% of application walltime (0.00%) | [ 3 / 3 ] Functions mostly use all threads Functions running on a reduced number of threads (typically sequential code) cover less than 10% of application walltime (0.00%) | [ 3 / 3 ] Functions mostly use all threads Functions running on a reduced number of threads (typically sequential code) cover less than 10% of application walltime (0.00%) |
[ 3 / 3 ] Cumulative Outermost/In between loops coverage (2.67%) lower than cumulative innermost loop coverage (73.27%) Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex | [ 3 / 3 ] Cumulative Outermost/In between loops coverage (5.54%) lower than cumulative innermost loop coverage (75.29%) Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex | [ 3 / 3 ] Cumulative Outermost/In between loops coverage (2.73%) lower than cumulative innermost loop coverage (75.35%) Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex | [ 3 / 3 ] Cumulative Outermost/In between loops coverage (2.53%) lower than cumulative innermost loop coverage (75.05%) Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex | [ 3 / 3 ] Cumulative Outermost/In between loops coverage (10.70%) lower than cumulative innermost loop coverage (66.32%) Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex | [ 3 / 3 ] Cumulative Outermost/In between loops coverage (8.90%) lower than cumulative innermost loop coverage (68.90%) Having cumulative Outermost/In between loops coverage greater than cumulative innermost loop coverage will make loop optimization more complex |
[ 4 / 4 ] Threads activity is good On average, more than 99.69% of observed threads are actually active | [ 4 / 4 ] Threads activity is good On average, more than 99.75% of observed threads are actually active | [ 4 / 4 ] Threads activity is good On average, more than 99.48% of observed threads are actually active | [ 4 / 4 ] Threads activity is good On average, more than 99.62% of observed threads are actually active | [ 4 / 4 ] Threads activity is good On average, more than 99.59% of observed threads are actually active | [ 4 / 4 ] Threads activity is good On average, more than 99.70% of observed threads are actually active |
[ 2 / 2 ] Less than 10% (0.00%) is spend in BLAS2 operations BLAS2 calls usually could make a poor cache usage and could benefit from inlining. | [ 2 / 2 ] Less than 10% (0.00%) is spend in BLAS2 operations BLAS2 calls usually could make a poor cache usage and could benefit from inlining. | [ 2 / 2 ] Less than 10% (0.00%) is spend in BLAS2 operations BLAS2 calls usually could make a poor cache usage and could benefit from inlining. | [ 2 / 2 ] Less than 10% (0.00%) is spend in BLAS2 operations BLAS2 calls usually could make a poor cache usage and could benefit from inlining. | [ 2 / 2 ] Less than 10% (0.00%) is spend in BLAS2 operations BLAS2 calls usually could make a poor cache usage and could benefit from inlining. | [ 2 / 2 ] Less than 10% (0.00%) is spend in BLAS2 operations BLAS2 calls usually could make a poor cache usage and could benefit from inlining. |
[ 4 / 4 ] Enough time of the experiment time spent in analyzed innermost loops (73.27%) 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. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed innermost loops (75.29%) 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. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed innermost loops (75.35%) 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. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed innermost loops (75.05%) 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. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed innermost loops (66.32%) 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. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed innermost loops (68.90%) 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% (0.00%) is spend in BLAS1 operations It could be more efficient to inline by hand BLAS1 operations | [ 3 / 3 ] Less than 10% (0.00%) is spend in BLAS1 operations It could be more efficient to inline by hand BLAS1 operations | [ 3 / 3 ] Less than 10% (0.00%) is spend in BLAS1 operations It could be more efficient to inline by hand BLAS1 operations | [ 3 / 3 ] Less than 10% (0.00%) is spend in BLAS1 operations It could be more efficient to inline by hand BLAS1 operations | [ 3 / 3 ] Less than 10% (0.00%) is spend in BLAS1 operations It could be more efficient to inline by hand BLAS1 operations | [ 3 / 3 ] Less than 10% (0.00%) is spend in BLAS1 operations It could be more efficient to inline by hand BLAS1 operations |
[ 2 / 2 ] Less than 10% (0.00%) is spend in Libm/SVML (special functions) | [ 2 / 2 ] Less than 10% (0.00%) is spend in Libm/SVML (special functions) | [ 2 / 2 ] Less than 10% (0.00%) is spend in Libm/SVML (special functions) | [ 2 / 2 ] Less than 10% (0.00%) is spend in Libm/SVML (special functions) | [ 2 / 2 ] Less than 10% (0.00%) is spend in Libm/SVML (special functions) | [ 2 / 2 ] Less than 10% (0.00%) is spend in Libm/SVML (special functions) |
[ 4 / 4 ] Loop profile is not flat No hotspot found in the application (greatest loop coverage is 3.27%), but the twenty hottest loops cumulated coverage is representative enough (37.12% > 20%) | [ 4 / 4 ] Loop profile is not flat At least one loop coverage is greater than 4% (4.34%), representing an hotspot for the application | [ 4 / 4 ] Loop profile is not flat No hotspot found in the application (greatest loop coverage is 3.68%), but the twenty hottest loops cumulated coverage is representative enough (38.52% > 20%) | [ 4 / 4 ] Loop profile is not flat No hotspot found in the application (greatest loop coverage is 4.00%), but the twenty hottest loops cumulated coverage is representative enough (41.65% > 20%) | [ 4 / 4 ] Loop profile is not flat At least one loop coverage is greater than 4% (4.15%), representing an hotspot for the application | [ 4 / 4 ] Loop profile is not flat At least one loop coverage is greater than 4% (4.18%), representing an hotspot for the application |
[ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (75.94%) If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (80.83%) If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (78.08%) If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (77.57%) If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (77.02%) If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances. | [ 4 / 4 ] Enough time of the experiment time spent in analyzed loops (77.79%) If the time spent in analyzed loops is less than 30%, standard loop optimizations will have a limited impact on application performances. |
| Analysis | r0 | r1 | r2 | r3 | r4 | r5 | |
|---|---|---|---|---|---|---|---|
| Loop Computation Issues | Less than 10% of the FP ADD/SUB/MUL arithmetic operations are performed using FMA | 9 | 9 | 9 | 8 | 8 | 8 |
| Presence of a large number of scalar integer instructions | 8 | 9 | 7 | 8 | 9 | 9 | |
| Bottleneck in the front-end | 5 | 4 | 4 | 4 | 4 | 5 | |
| Control Flow Issues | Presence of 2 to 4 paths | 3 | 3 | 3 | 3 | 1 | 1 |
| Presence of more than 4 paths | 2 | 2 | 2 | 3 | 0 | 0 | |
| Non-innermost loop | 0 | 1 | 0 | 0 | 1 | 1 | |
| Data Access Issues | Presence of constant non-unit stride data access | 8 | 8 | 8 | 7 | 6 | 6 |
| Presence of indirect access | 4 | 4 | 4 | 6 | 4 | 4 | |
| Vectorization Roadblocks | Presence of 2 to 4 paths | 3 | 3 | 3 | 3 | 1 | 1 |
| Presence of more than 4 paths | 2 | 2 | 2 | 3 | 4 | 4 | |
| Non-innermost loop | 0 | 1 | 0 | 0 | 1 | 1 | |
| Presence of constant non-unit stride data access | 8 | 8 | 8 | 7 | 6 | 6 | |
| Presence of indirect access | 4 | 4 | 4 | 6 | 4 | 4 | |