It's very interesting. I - Page 2

CSlat2 · ‎01-11-2018

I have created a simple C++ app called timeWaster. Built it using MSVC 19. This app runs fine in a command window created by Parallel Studio. (compiled using cl -EHsc -Zi timeWaster.cpp)

Sample run:

D:\Users\...\VTune\timeWaster>timeWaster64.exe

a=3.21061e+006

primeCnt=348844

11.2066 seconds

Done

Launch Vtune with admin rights.

Go to configure, select “Launch Application”, browse to the timeWaster64.exe, set working dir to same.

Toggle over to the run screen, “Basic Hotspots” selected, everything set to default. Hit start …

Up pops a command window … that stays empty (this window sticks around till killed with task master, timeWaster process still running 0% cpu).

Then within seconds of hitting start:

Intel VTune Amplifier XE 2017 has faced a serious problem

1/11/2018 6:21:45 AM Cannot open data: Intel VTune Amplifier XE 2017 has faced a serious problem.

Error 0x40000024 (No data) -- No data is collected. Possible reasons:

- Workload is too small. No samples are collected.

- The application environment is not specified correctly.

See the Troubleshooting help topic for more details.

Trouble shooting area of of no help so I am here.

So where do I start tracking this down? I have already considered dll dependencies and pruned that list down to a minimum.

bsv__venki · ‎06-19-2018

Hi,

Please reply ASAP, am waiting for any suggestion.

Thanks,

venkatesh.

PAVEL_G_Intel · ‎06-19-2018

It's very interesting. I thought that you have a problem with PMU settings in your KVM. But looks like it's ok.

1) Could you get command line from gui for running analysis?
2) Let's run collection without sep driver. Please unload it and try to start collection. It will use perf for hardware events collection

bsv__venki · ‎06-19-2018

Hi ok..

I will try.. wil get back in few minutes.

Thanks,

Venkatesh.

bsv__venki · ‎06-19-2018

{code}

root@ubuntu:~/target_drivers/sepdk/src# ./rmmod-sep

Removing sep4_1 driver from the kernel ... done.
Deleting /dev/sep4_1 devices ... done.
The sep4_1 driver has been successfully unloaded.
Removing vtsspp driver from the kernel ... done.
The vtsspp driver has been successfully unloaded.
Removing socperf2_0 driver from the kernel ... done.
Deleting /dev/socperf2_0 devices ... done.
The socperf2_0 driver has been successfully unloaded.
No driver needs PMU arbitration anymore: the PAX service can be safely removed.
Attempting to stop PAX service ...
Removing pax driver from the kernel ... done.
Deleting previously created /dev/pax device ... done.
The pax driver has been successfully unloaded.
PAX service has been stopped.
root@iubuntu:~/target_drivers/sepdk/src# amplxe-cl -target-tmp-dir=/root/fp-vtune -collect advanced-hotspots -knob collection-detail=stack-sampling -target-process=*process_name* -r=1st-run-f -target-tmp-dir=/root/fp-vtune -data-limit=2048
amplxe: Error: Cannot enable Hardware Event-based Sampling: problem with the driver (sep*/sepdrv*). Check that the driver is running and the driver group is in the current user group list. See "Building and Managing the Sampling Driver" help topic for further details.
amplxe: Error: Cannot enable advanced capabilities for Hardware Event-based Sampling: problem with the driver (vtss/vtsspp). Check that the driver is running and the driver group is in the current user group list. See "Building and Managing the Sampling Driver" help topic for further details.
root@it2-17-sfcgw-ubuntu:~/target_drivers/sepdk/src#

{code}

bsv__venki · ‎06-19-2018

Hi,

its asking for sampling drivers , without that we are notr able to run advanced hot spots or hardware events.

i tried to run via "driverless perf option" => but not sure what's wrong , it is not running.

we had installed for this purpose.

-ubuntu:~/target_drivers/sepdk/src# perf -v
perf version 4.13.13
-ubuntu:~/target_drivers/sepdk/src#

Thanks,

Venkatesh.

PAVEL_G_Intel · ‎06-19-2018

Without -knob collection-detail=stack-sampling you will be able to collect.

According to previous information. I think you will not able to use sep due to errors on Writing/Reading msr's.
With perf-based collection it's impossible to collect stacks.

For what reason you need Event Based sampling with stacks? Basic hotspots provide the stacks based on another mechanism.

- Pavel

bsv__venki · ‎06-19-2018

Hi,

Please see below.

ubuntu:~/target_drivers/sepdk/src# amplxe-cl -target-tmp-dir=/root/fp-vtune -collect advanced-hotspots -target-process=process_name -r=1st-run-f -target-tmp-dir=/root/fp-vtune -data-limit=2048
amplxe: Error: Cannot enable Hardware Event-based Sampling: problem with the driver (sep*/sepdrv*). Check that the driver is running and the driver group is in the current user group list. See "Building and Managing the Sampling Driver" help topic for further details.
amplxe: Error: Cannot enable advanced capabilities for Hardware Event-based Sampling: problem with the driver (vtss/vtsspp). Check that the driver is running and the driver group is in the current user group list. See "Building and Managing the Sampling Driver" help topic for further details.
ubuntu:~/target_drivers/sepdk/src#

Thanks,

Venkatesh.

PAVEL_G_Intel · ‎06-19-2018

What is output of <VTune Amplifier install path>/bin64/amplxe-perf list ?

bsv__venki · ‎06-19-2018

Hi,

Please find the command output.

Thanks,

venkatesh.

bsv__venki · ‎06-19-2018

Hi,

Please find the command output.

Thanks,

venkatesh.

bsv__venki · ‎06-19-2018

Hi,

Please find the command output.

Thanks,

venkatesh.

PAVEL_G_Intel · ‎06-19-2018

I recommend you to download new version of VTune Amplifier...

Last try. Do this command also failed with the output?
amplxe-cl -collect advanced-hotspots -- find /tmp

bsv__venki · ‎06-19-2018

ubuntu:~/vtune_amplifier_2018_update3# amplxe-cl -collect advanced-hotspots -target-process=fastpath -- find /tmp
amplxe: Warning: To profile kernel modules during the session, make sure they are available in the /lib/modules/kernel_version/ location.
amplxe: Collection started. To stop the collection, either press CTRL-C or enter from another console window: amplxe-cl -r /root/vtune_amplifier_2018_update3/r000ah -command stop.
^Camplxe: Collection detached.
amplxe: Collection stopped.
amplxe: Using result path `/root/vtune_amplifier_2018_update3/r000ah'
amplxe: Executing actions 20 % Resolving information for `libxylog.so'
amplxe: Warning: Cannot locate debugging information for file `/opt/nec/vcpe/lib64/libxylog.so'.
amplxe: Executing actions 20 % Resolving information for `vmlinux'
amplxe: Warning: Cannot locate debugging information for the Linux kernel. Source-level analysis will not be possible. Function-level analysis will be limited to kernel symbol tables. See the Enabling Linux Kernel Analysis topic in the product online help for instructions.
amplxe: Executing actions 21 % Resolving information for `libstdc++.so.6.0.21'
amplxe: Warning: Cannot locate debugging information for file `/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21'.
amplxe: Executing actions 22 % Resolving information for `kvm.ko'
amplxe: Warning: Cannot locate debugging information for file `/lib/modules/4.13.0-26-generic/kernel/arch/x86/kvm/kvm.ko'.
amplxe: Executing actions 75 % Generating a report
Collection and Platform Info
----------------------------
Parameter r000ah
------------------------ ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Application Command Line find
Operating System 4.13.0-26-generic NAME="Ubuntu"
VERSION="16.04.3 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.3 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial
Computer Name it2-17-sfcgw-ubuntu
Result Size 46467703
Collection start time 16:05:38 19/06/2018 UTC
Collection stop time 16:05:51 19/06/2018 UTC
Collector Type Driverless Perf system-wide sampling

CPU
---
Parameter r000ah
----------------- ------------------------------------------------------
Name Intel(R) Xeon(R) E5/E7 v3 Processor code named Haswell
Frequency 2299998030
Logical CPU Count 6

Summary
-------
Elapsed Time: 12.607
Paused Time: 0.0
CPU Time: 34.963
Average CPU Utilization: 2.914
CPI Rate: 0.594

Event summary
-------------
Hardware Event Type Hardware Event Count:Self Hardware Event Sample Count:Self Events Per Sample
---------------------------------- ------------------------- -------------------------------- -----------------
CPU_CLK_UNHALTED.THREAD 79980200000 34774 2300000
CPU_CLK_UNHALTED.REF_TSC 80414900000 34963 2300000
INST_RETIRED.ANY 134651200000 58544 2300000
CPU_CLK_UNHALTED.REF_XCLK 3494004817 34939 100003
CPU_CLK_UNHALTED.ONE_THREAD_ACTIVE 1726851804 17268 100003
amplxe: Executing actions 100 % done
-ubuntu:~/vtune_amplifier_2018_update3#

bsv__venki · ‎06-19-2018

I think this looks ok with this..

Thanks,

Venkatesh.

bsv__venki · ‎06-19-2018

Am trying to get hardware event analysis, my xsrever is stopping..

am checking...

Thanks,

VEnkatesh.

bsv__venki · ‎06-19-2018

Hi,

One issue i am observing is "Hardware event analysis" option not shown in gui..

Any reason ?

Thanks,

Venkatesh.

bsv__venki · ‎06-19-2018

Hi,

If i run amplex-gui , am not seeing any "hardware events anlayisi option in vtune gui ".

Please guide me how to get that.

Thanks,

Venkatesh.

bsv__venki · ‎06-20-2018

Hi,

Any suggestions ?

Thanks,

Venkatesh.

bsv__venki · ‎06-20-2018

Hi,

Please some one help, Please we need to do complete this task.

issues:

=====

1. hardware vents option not coming.

2. my xserver crashing once i start and stop amplxe-gui.

Thanks,

Venkatesh.

PAVEL_G_Intel · ‎06-20-2018

Hi,

Please read documentation about event based sampling:
https://software.intel.com/en-us/vtune-amplifier-help-hardware-event-based-sampling-collection

There is not hardware events option - it's hided from user by analysis types.

bsv__venki · ‎06-20-2018

Hi,

2. my xserver crashing once i start and stop amplxe-gui.

or

once i import the result from the command line.

Any suggestions.

Please suggest, atelast we can analyse some thing using vtune...

otherwise this tool is not @ all useful for us.

Please sugeest some help for issues faced, so that we can use vtune.

Am trying to get some results from past 15 days, but because of so may issues, i was not able to get result.

Thanks,

Venkatesh.

Win 7, Vtune 2017 update 3 ... cannot do first hot spot ... "serious problem"