VTune Amplifier XE 2011 can only collect performance data on one node. You have to install the product on other nodes separately,and collect performance data from different node.
SoI suggest you to start data collection by using amplxe-cl but set start-paused, set duration time for all nodes. SecondaryrunMPI application without VTune Amplifier XE from one node, you can insert __itt code to do resume/paused control in MPI application (seethis article).Again, you have to set duration to terminate data collectionon all nodes.
If you want tocollect performance data of MPI application on singlenode with multicore, please refer to this article.
Ok thanks for those suggestions. I made a lot of tests, I re-installed the soft et the driver. I think there was conflicts or side effects between the first installation and the method to launch amplifier on diskless nodes (cluster SGI ICE) with login ldap, batch server LSF, MPI libraries (Intel or MPT), etc ......
On one node everythings works ! Now my problem is to find a methodology to launch amplifier-cl on multinodes and to process the results in a uniq amplifier gui.
We would like to estimate the Flops, is it possible ?
Sounds good - it works after uninstalling/reinstalling the product.
There is no predefined analysis type for Flops, you can define (create) yourself new analysis typeto measure Flops: 1) On left-bottom of "Choose Analysis Type" dialog, click "New..." button to select "Hardware Event-based Sampling Analysis" 2) Edit new analysis type name 3) Click "Edit" button then click "Add Event" button to add new event(s) to your new analysis type. You might select event "X87_OPS_RETIRED.ANY" or/and event "FP_ASSIST"