User Guide

Contents

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.
This knob is available only for the HPC Performance Characterization analysis report.
Actions Modified
Description
Use the
-report-knob
action-option to configure knob settings for a
report
action.
This example generates the summary report for the HPC Performance Characterization analysis result and skips issue descriptions.
vtune -report summary -r r001hpc -report-knob show-issues=false vtune: 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.
vtune -report summary -r r001hpc -report-knob show-issues=true vtune: 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. | ...

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.