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sun_l_
New Contributor I
94 Views

amplxe: Warning: Cannot locate debugging symbols for file `xxx'.

Run vtune on host, and there are warnings "amplxe: Warning: Cannot locate debugging symbols for file `/lib64/libc-2.12.so' " and ".amplxe: Warning: Cannot locate debugging symbols for file `/usr/bin/ssh' "

The program run on xeon phi mic.

Does the warnnings have infulence to the result? why this happen as the xxx.so is just there?

 

 
[root@amax inputs]# amplxe-cl -collect hotspots  -- ssh mic1 ' cd /home/wang/ &&  export LD_LIBRARY_PATH=/home/wang/lib  && ./blackscholes   240 '
amplxe: Collection started. To stop the collection, either press CTRL-C or enter from another console window: amplxe-cl -r /home/wang/r006hs -command stop.
PARSEC Benchmark Suite
Num of Options: 10000000
Num of Runs: 100
Size of data: 400000000
amplxe: Collection stopped.
amplxe: Using result path `/home/kwang/parsecMIC/blackscholes/inputs/r006hs'
amplxe: Executing actions 17 % Resolving information for `ssh'                 
amplxe: Warning: Cannot locate debugging symbols for file `/usr/bin/ssh'.
amplxe: Executing actions 17 % Resolving information for `libc-2.12.so'        
amplxe: Warning: Cannot locate debugging symbols for file `/lib64/libc-2.12.so'.
amplxe: Executing actions 50 % Generating a report                             

Collection and Platform Info
----------------------------
Parameter                 r006hs                                                                                                                                                    
------------------------  ----------------------------------------------------------------------------------------------------------------------------------------------------------
Application Command Line  ssh "mic1" " cd /home/wang/ &&  export LD_LIBRARY_PATH=/home/wang/lib  && ./blackscholes   240 
Operating System          2.6.32-358.23.2.el6.x86_64 CentOS release 6.4 (Final)                                                                                                     
Computer Name             amax                                                                                                                                                      
Result Size               1877228                                                                                                                                                   
Collection start time     02:58:23 23/04/2015 UTC                                                                                                                                   
Collection stop time      03:01:39 23/04/2015 UTC                                                                                                                                   

CPU
---
Parameter          r006hs                       
-----------------  -----------------------------
Name               Intel(R) Xeon(R) E5 processor
Frequency          2400001403                   
Logical CPU Count  8                            

Summary
-------
Elapsed Time:       196.416
CPU Time:           0.020  
Average CPU Usage:  0.000  
amplxe: Executing actions 100 % done      

 

[root@amax inputs]# locate libc-2.12.so
/lib/libc-2.12.so
/lib/i686/nosegneg/libc-2.12.so
/lib64/libc-2.12.so
[root@amax inputs]# 

0 Kudos
9 Replies
Peter_W_Intel
Employee
94 Views

1. You need to specify search path that VTune will re-solve the symbol for result, based on path (on host side)

2. Basic hotspots is not available on MIC, please use advanced-hotspots instead.(Now your result wass for Intel(R) Xeon(R) E5 processor)

3. Please use latest VTune Amplifier XE 2015 U3.

For example:

amplxe-cl -c advanced-hotspots -target-system=mic-native:1 -search-dir=$dir  -- path-program args

Peter_W_Intel
Employee
94 Views

You can ignore warning info that the tool cannot locate symbol info on some modules, like glibc.

Using above CLI, you don't need to specify "ssh" - although that was workable in 2013 version.

sun_l_
New Contributor I
94 Views

Peter Wang (Intel) wrote:

1. You need to specify search path that VTune will re-solve the symbol for result, based on path (on host side)

2. Basic hotspots is not available on MIC, please use advanced-hotspots instead.(Now your result wass for Intel(R) Xeon(R) E5 processor)

3. Please use latest VTune Amplifier XE 2015 U3.

For example:

amplxe-cl -c advanced-hotspots -target-system=mic-native:1 -search-dir=$dir  -- path-program args

Thanks for your allert! I didn't notice the basic hotspots not workable.

I use advanced-hotspots instead, and can see event summary when finished:

Event summary
-------------
Hardware Event Type       Hardware Event Count:Self  Hardware Event Sample Count:Self  Events Per Sample
------------------------  -------------------------  --------------------------------  -----------------
CPU_CLK_UNHALTED.THREAD                    40800000                                17  2400000          
CPU_CLK_UNHALTED.REF_TSC                   76800000                                32  2400000          
INST_RETIRED.ANY                           38400000                                16  2400000          
amplxe: Executing actions 100 % done   

-----------------------

(Now your result wass for Intel(R) Xeon(R) E5 processor)

what does this mean?  It's host. I'm sure the program runs on MIC with 240 threads.

--------

where do I find more information about using amplxe-cl to test a program on MIC?

-------

[root@amax inputs]# amplxe-cl -collect advanced-hotspots  -target-system=mic-native:1 -search-dir=/home/wang/blackscholes    --  ' cd /home/kwang/blackscholes &&  export LD_LIBRARY_PATH=/home/wang/lib  && ./blackscholes   240 ../inputs/in_10M.txt ../ouput'                  
amplxe: Using target: mic-native:1
amplxe: Error: Amplifier cannot detect Intel Xeon Phi coprocessor configuration.
amplxe: Error: Amplifier cannot detect Intel Xeon Phi coprocessor configuration.
amplxe: Fatal error: Cannot create analysis type. Check input parameters or reinstall the product. 

I used vtune_amplifier_xe_2015.2.0.393444, the command without ssh is failed. 

 

Peter_W_Intel
Employee
94 Views

First, my opinion is to write a script for - ' cd /home/kwang/blackscholes &&  export LD_LIBRARY_PATH=/home/wang/lib  && ./blackscholes   240 ../inputs/in_10M.txt ../ouput'       

Second, ensure if VTune works on MIC without target application:

#amplxe-cl -collect advanced-hotspots  -target-system=mic-native -d 5 ; are you sure that you use mic1?

If failed, need to check if vtune driver is loaded on MIC:

ssh mic1 lsmod | grep sep

If vtune driver is not loaded, please run:

vtune_amplifier_xe_2015/bin64/k1om/sep_micboot_install.sh

If it failed, check MPSS status

Good luck! 

 

Peter_W_Intel
Employee
94 Views

>amplxe: Using target: mic-native:1
>amplxe: Error: Amplifier cannot detect Intel Xeon Phi coprocessor configuration.
>amplxe: Error: Amplifier cannot detect Intel Xeon Phi coprocessor configuration.
>amplxe: Fatal error: Cannot create analysis type. Check input parameters or reinstall the product.

You also need to check if app can run on MIC, without VTune. 

 

sun_l_
New Contributor I
94 Views

Peter Wang (Intel) wrote:

>amplxe: Using target: mic-native:1
>amplxe: Error: Amplifier cannot detect Intel Xeon Phi coprocessor configuration.
>amplxe: Error: Amplifier cannot detect Intel Xeon Phi coprocessor configuration.
>amplxe: Fatal error: Cannot create analysis type. Check input parameters or reinstall the product.

You also need to check if app can run on MIC, without VTune. 

As you can see, using "ssh mic1" works. I'm sure it run on MIC, as I saw it running with 240 threads using Micsmc command on MIC.

#amplxe-cl -collect hotspots  -- ssh mic1 ' cd /home/wang/ &&  export LD_LIBRARY_PATH=/home/wang/lib  && ./blackscholes   240 '

 

Without Vtune,

#ssh mic1

#./blackscholes 240 input/in_10M.txt ouput

app can run on MIC.

sun_l_
New Contributor I
94 Views

Peter Wang (Intel) wrote:

First, my opinion is to write a script for - ' cd /home/kwang/blackscholes &&  export LD_LIBRARY_PATH=/home/wang/lib  && ./blackscholes   240 ../inputs/in_10M.txt ../ouput'       

Second, ensure if VTune works on MIC without target application:

#amplxe-cl -collect advanced-hotspots  -target-system=mic-native -d 5 ; are you sure that you use mic1?

If failed, need to check if vtune driver is loaded on MIC:

ssh mic1 lsmod | grep sep

If vtune driver is not loaded, please run:

vtune_amplifier_xe_2015/bin64/k1om/sep_micboot_install.sh

If it failed, check MPSS status

Good luck! 

#ssh mic1 lsmod | grep sep;  displays nothing. The vtune driver seems didn't installed on MIC.

 

It seems that using "amplxe-cl" with "ssh mic1" can get a result. Do I have to install vtune driver on MIC or not? 

TimP
Black Belt
94 Views

You won't get any data collection from code running in MIC without engaging the VTune driver there.  Profiling what happens on host during a MIC native run isn't interesting.

With current VTune, you should be able to collect using both the MIC and the host sep drivers in the same run (although it didn't work for me, on my hardware which may no longer be supported). 

sun_l_
New Contributor I
94 Views

Tim Prince wrote:

You won't get any data collection from code running in MIC without engaging the VTune driver there.  Profiling what happens on host during a MIC native run isn't interesting.

With current VTune, you should be able to collect using both the MIC and the host sep drivers in the same run (although it didn't work for me, on my hardware which may no longer be supported). 

Thanks.

I realised how foolish I am. What I got is something that happened on host.