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intel APS reports unusually large message transfer time

psing51
New Contributor I
544 Views

Hi,
I was trying to use intel APS tool, as - 
mpirun -np X -ppn Y aps -c mpi ./application.exe

and i came across following observation - 

Messagesize(B) Volume(MB) Volume(%) Transfers Time(sec) Time(%)
589824 1.71E+08 26.79 290070590 220680.08 18.12
35512 860687.7 0.13 24236532 19085.79 1.57
37056 899539 0.14 24275124 19037.67 1.56
38600 904379.9 0.14 23429532 18470.59 1.52

.....


as per this report, the 290070590x transfers of the 589824 message size data took 220680.08 seconds (= ~61 hours ) but the application finished normally in ~3 hours.
(and there are more messages sizes  in the report ~600 lines)

this was a run of an application with 4 process per node (10 threads per process) on 128 nodes.


Is this report incorrect or i am interpreting this incorrectly?


0 Kudos
3 Replies
JaideepK_Intel
Moderator
499 Views

Hi,

 

Thank you for posting in Intel Communities.

Can you please share the below information for better understanding of the issue.

1. The steps to reproduce the problem, as well as the operating system (for example, Windows 10, linux: Ubuntu 18.04.1, Centos8).

2. The version of Vtune you are using (if it is old, please upgrade) and the steps to reproduce your problem. (if possible attach screen shots too)

3. If possible, a sample reproducer or sample executable.

 

Thanks,

Jaideep


JaideepK_Intel
Moderator
430 Views

Hi,


Could you please share the details mentioned above? so we can reproduce your issue from our end.


Thanks,

Jaideep



JaideepK_Intel
Moderator
377 Views

Hi,


We have not heard back from you. This thread will no longer be monitored by Intel. If you need further assistance, please post a new question.


Thanks,

Jaideep


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