report-knob

Set configuration options for the specified report type.

Syntax

-report-knob<knobName>=<knobValue>

Arguments

<knobName> <knobValue> Supported Report Description
show-issues true | false. Default: true summary

Skip issue descriptions in the generated report.

Note

This knob is available only for the HPC Performance Characterization analysis report.

Actions Modified

report

Description

Use the -report-knob action-option to configure knob settings for a report action.

Example

This example generates the summary report for the HPC Performance Characterization analysis result and skips issue descriptions.

$ amplxe-cl -report summary -r r001hpc -report-knob show-issues=false
amplxe: Executing actions 75 % Generating a report
Elapsed Time: 23.182s
GFLOPS: 14.748
CPU Utilization: 58.0%
    Average CPU Usage: 13.920 Out of 24 logical CPUs
    Serial Time: 0.069s (0.3%)
    Parallel Region Time: 23.113s (99.7%)
        Estimated Ideal Time: 14.010s (60.4%)
        OpenMP Potential Gain: 9.103s (39.3%)
Memory Bound: 0.446
    Cache Bound: 0.175
    DRAM Bound: 0.216
    NUMA: % of Remote Accesses: 38.3%
FPU Utilization: 2.7%
    GFLOPS: 14.748
        Scalar GFLOPS: 4.801
        Packed GFLOPS: 9.947
Collection and Platform Info
    Application Command Line: ./sp.B.x
    User Name: vtune
    Operating System: 3.10.0-327.el7.x86_64 NAME="Red Hat Enterprise Linux Server" VERSION="7.2 (Maipo)" ID="rhel" ID_LIKE="fedora" VERSION_ID="7.2" P
RETTY_NAME="Red Hat Enterprise Linux Server 7.2 (Maipo)" ANSI_COLOR="0;31" CPE_NAME="cpe:/o:redhat:enterprise_linux:7.2:GA:server" HOME_URL="https://w
ww.redhat.com/" BUG_REPORT_URL="https://bugzilla.redhat.com/"  REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7" REDHAT_BUGZILLA_PRODUCT_VERSION=7.
2 REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux" REDHAT_SUPPORT_PRODUCT_VERSION="7.2"
    Computer Name: test
    Result Size: 1 GB
    Collection start time: 19:04:30 13/07/2016 UTC
    Collection stop time: 19:04:53 13/07/2016 UTC
    Name: Intel(R) Xeon(R) E5/E7 v2 Processor code named Ivytown
    Frequency: 2.694 GHz
    Logical CPU Count: 24
    CPU
        Name: Intel(R) Xeon(R) E5/E7 v2 Processor code named Ivytown
        Frequency: 2.694 GHz
        Logical CPU Count: 24

This example generates the summary report for the HPC Performance Characterization analysis result and shows issue descriptions.

$ amplxe-cl -report summary -r r001hpc -report-knob show-issues=true
amplxe: Executing actions 75 % Generating a report
Elapsed Time: 23.182s
GFLOPS: 14.748
CPU Utilization: 58.0%
 | The metric value is low, which may signal a poor logical CPU cores
 | utilization caused by load imbalance, threading runtime overhead, contended
 | synchronization, or thread/process underutilization. Explore CPU Utilization
 | sub-metrics to estimate the efficiency of MPI and OpenMP parallelism or run
 | the Threading analysis to identify parallel bottlenecks for other
 | parallel runtimes.
 |
    Average CPU Usage: 13.920 Out of 24 logical CPUs
    Serial Time: 0.069s (0.3%)
    Parallel Region Time: 23.113s (99.7%)
        Estimated Ideal Time: 14.010s (60.4%)
        OpenMP Potential Gain: 9.103s (39.3%)
         | The time wasted on load imbalance or parallel work arrangement is
         | significant and negatively impacts the application performance and
         | scalability. Explore OpenMP regions with the highest metric values.
         | Make sure the workload of the regions is enough and the loop schedule
         | is optimal.
         |
...

For more complete information about compiler optimizations, see our Optimization Notice.
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