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Oracle Solaris Studio 12.3: Performance Analyzer MPI Tutorial     Oracle Solaris Studio 12.3 Information Library
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1.  Performance Analyzer MPI Tutorial

About MPI and Performance Analyzer

Setting Up for the Tutorial

Obtaining MPI Software

MPI Software for Oracle Solaris 10 and Linux

MPI Software for Oracle Solaris 11

Prepare the Sample Source Code

Sample Code for ClusterTools and Open MPI

Sample Code for Oracle Message Passing Toolkit in Oracle Solaris 11

Compile and Run the Sample Program

Collecting Data on the ring_c Example

Opening the Experiment

Navigating the MPI Timeline

Viewing Message Details

Viewing Function Details and Application Source Code

Filtering Data in the MPI Tabs

Using the Filter Stack

Using the MPI Chart Tab

Using the MPI Chart Controls

Make a Chart to Show Where Messages are Being Sent

Make a Chart to Show Which Ranks Waited Longest to Receive a Message

Look for Slow Message Effects on Time Spent in MPI Functions


A.  MPI Chart Control Settings

B.  Sample Code for the Tutorial

Navigating the MPI Timeline

  1. Click the MPI Timeline tab if it is not already selected.

  2. Zoom in on the data by clicking and dragging from the left to the right on any process row as shown by the directional arrow in the graphic below. When you release the mouse button, the area inside the box automatically expands to reveal a zoomed in view.

    image:Arrow showing clicking and dragging

    An alternative to clicking and dragging is to use the zooming slider controls in the top left of the timeline.

    image:Zooming controls in the MPI Timeline

    Use the horizontal slider to change the time scale. You'll see progressively smaller chunks of time, while still showing all the processes, as you zoom.

    Use the vertical slider to zoom in on the MPI processes.

    Click the Revert to Previous Zoom button in the MPI Timeline Controls tab shown below to go back to the previous level of zooming.

    image:Revert to Previous Zoom button

    Click the Revert to Previous Zoom button a second time to return to the first zoom.

  3. Pan across the data by sliding the scroll bars located at the bottom and the right of the timeline.

    Alternatively you can toggle between a pointer that zooms and a pointer that pans by clicking the hand icon in the MPI Timeline Controls tab.

    image:Zoom Pan toggle button

    When the pointer is a hand, you can drag across the MPI Timeline to pan horizontally.