Unable to collection openmp* performance with VTune

yang_w_1 — Wed, 16 Dec 2015 06:07:20 GMT

hi,

Currently,I want profiling openmp* in my programs,so i write a test program,then compile it with icpc.run .but ,unfortunate VTune do not collect any openmp informations.

follow is my steps:

1、edit a sample test code,

2、edit makefile,

ADD_DEFINITIONS(-g -O2 -openmp),

SET(CMAKE_C_COMPILER icc)SET(CMAKE_CXX_COMPILER icpc)

TARGET_LINK_LIBRARIES(OMPMKL libiomp5.so mkl_rt)

3、make

4、run on debian 6(elapsed time : about 20s.),use command line :

amplxe-cl -collect advanced-hotspots -k collection-detail=stack-sampling -data-limit=0 --target-pid=20540.and the console print:

amplxe-cl -collect advanced-hotspots -k collection-detail=stack-sampling -data-limit=0 --target-pid=20540
amplxe: Collection started. To stop the collection, either press CTRL-C or enter from another console window: amplxe-cl -r /UIH/bin/r028ah -command stop.
amplxe: Collection detached.
amplxe: Collection stopped.
amplxe: Using result path `/UIH/bin/r028ah'
amplxe: Executing actions 16 % Resolving module symbols
amplxe: Warning: Cannot locate file `[vsyscall]'.
amplxe: Executing actions 16 % Resolving information for `libiomp5.so'
amplxe: Warning: Cannot locate debugging symbols for file `/usr/lib/libstdc++.so.6.0.13'.
amplxe: Executing actions 17 % Resolving information for `libdl-2.11.3.so'
amplxe: Warning: Cannot locate debugging symbols for file `/lib/libdl-2.11.3.so'.
amplxe: Executing actions 17 % Resolving information for `libpthread-2.11.3.so'
amplxe: Warning: Cannot locate file `vtsspp.ko'.
amplxe: Executing actions 17 % Resolving information for `vtsspp'
amplxe: Warning: Cannot locate debugging symbols for file `/lib/libpthread-2.11.3.so'.
amplxe: Executing actions 17 % Resolving information for `libmkl_intel_thread.s
amplxe: Warning: Cannot locate debugging symbols for file `/lib/libc-2.11.3.so'.
amplxe: Executing actions 18 % Resolving information for `ld-2.11.3.so'
amplxe: Warning: Cannot locate debugging symbols for file `/lib/ld-2.11.3.so'.
amplxe: Executing actions 50 % Generating a report

Collection and Platform Info
----------------------------
Parameter                 r028ah
------------------------ -----------------------
Application Command Line
Operating System          2.6.32-5-amd64 6.0.10
Computer Name             debian-irip-test1
Result Size               68809086
Collection start time     02:02:34 16/12/2015 UTC
Collection stop time      02:02:58 16/12/2015 UTC

CPU
---
Parameter          r028ah
----------------- -----------------------------------
Name               Intel(R) Xeon(R) E5/E7 v2 processor
Frequency          2793150674
Logical CPU Count 20

Summary
-------
Elapsed Time:       23.295
CPU Time:           78.232
Average CPU Usage: 3.466
CPI Rate:           0.390

Event summary
-------------
Hardware Event Type       Hardware Event Count:Self Hardware Event Sample Count:Self Events Per Sample
------------------------ ------------------------- -------------------------------- -----------------
INST_RETIRED.ANY                       559902227941                            109204 2800000
CPU_CLK_UNHALTED.THREAD                218545613987                            109312 2800000
CPU_CLK_UNHALTED.REF_TSC               218514693572                            109085 2000003
amplxe: Executing actions 100 % done

5、because i don't have linux gui,so copy the result to a windows7,and open result by VTune(windows version).

I did not find any openmp informations.

versions: icpc version 15.0.0 (gcc version 4.4.5 compatibility);VTune Amplifier XE 2015;

Intel(R) OMP Copyright (C) 1997-2014, Intel Corporation. All Rights Reserved.
Intel(R) OMP version: 5.0.20140611
Intel(R) OMP library type: performance
Intel(R) OMP link type: dynamic
Intel(R) OMP build time: 2014-06-13 19:14:45 UTC
Intel(R) OMP build compiler: Intel C++ Compiler 14.0
Intel(R) OMP alternative compiler support: yes
Intel(R) OMP API version: 4.0 (201307)
Intel(R) OMP dynamic error checking: no
Intel(R) OMP thread affinity support: not used
Intel(R) OMP debugger support version: 1.1

i can't understand what's wrong with me,somebody help me!

thank you very much.

df

yang_w_1 — Thu, 17 Dec 2015 01:34:44 GMT

Hello Yang,

Dmitry_P_Intel1 — Thu, 17 Dec 2015 15:34:47 GMT

Hello Yang,

Could you please upgrade VTune to 2016 U1 version? It might be the case that 2015 VTune that you use does not support attach mode for UserAPI that OpenMP runtime uses for VTune analysis.

Or try launch mode if you cannot upgrade.

Thanks & Regards, Dmitry

topic Hello Yang, in Analyzers

Unable to collection openmp* performance with VTune

df

Hello Yang,