Current PAPI Software and Patches
PAPI 5.1.1 is Here
PAPI 5.1.1, a new incremental release of PAPI is now ready for download.
The main reason for this release was to add support for Intel IvyBridge EP.
But while we were at it we couldn't resist throwing in a few more things including:
- build fixes for SPARC and IA64
- assorted perf_event fixes, including support for perf_event_paranoid = 2
- CUDA component fixes to eventset ordering
- ARM support for pthread_mutexes
- better overflow support for BG/Q components
- tighter logic in the execution of the run_tests.sh script
As always, you can get more details on these changes in the file ChangeLogP511.txt inside the PAPI tarball.
PAPI 5.1.0 Ready for Download
Well, it's really PAPI 18.104.22.168, but who's counting?
A few final last minute fixes caused us to bump the version number, just to keep the source code repository happy.
We added support for PAPI on the Intel Xeon Phi processor, aka MIC or KNC or Knight's Corner. PAPI cross-compiles on the host and runs on the MIC. Note that this currently requires a kernel patch to the MIC kernel. Details can be found in INSTALL.txt.
We also added a new component to measure power usage on MIC cards. This is a host-based component that provides a selection of power, current and voltage measures.
PAPI now supports measuring uncore events on Intel Sandy Bridge processors, which requires support for a new domain: PAPI_DOM_SUPERVISOR to measure events at the system level.
We added a new API, PAPI_get_eventset_component, which returns the component index of a given eventset and is parallel to the PAPI_get_event_component call introduced in PAPI 5.0.
We improved the papi_command_line utility to print output in a variety of formats, and to display event units if they're available.
Other changes and enhancements include:
- Various build system fixes.
- NVML component fixes.
- ARM Cortex A15 support.
- Enhanced doxygen formatting for html pages.
- and a host of miscellaneous bug fixes.
Minor Release, Major Impact
PAPI 5.0.1 is now available both as a tarball and as a patch to the recent 5.0.0 release. We recommend that all users and tools upgrade to this release.
Why, you may ask, are we releasing again so soon after the 5.0 release?
Primarily because we discovered a bug that randomly causes derived PRESET events to be computed incorrectly. This is a small fix with big implications, and was reported by an early PAPI 5.0 user in our bug reports forum. Thank you for helping to improve our package.
While we were at it, we decided to polish a few other less important things as well:
- we updated the libpfm4 library with some Sandy Bridge fixes
- we fixed some problems with the build system and external libpfm4 libraries
- we fixed some event definitions for Intel Ivy Bridge processors
- we updated the CUDA component to support CUDA 5 and Kepler
- we added support for RAPL energy measurement on Ivy Bridge
If you've already installed PAPI 5.0.0, you can download a patch here and apply it to your source code and rebuild the library.
If you'd rather install from a tarball you can use the download link below.
Source Code Repository
If you would like to interactively browse the PAPI source code, go to the Web based source browser here:
This source browser is also accessible through the Trac bug reporting system or directly through the Browse Source link in the menu to the left.
You can also stay up to date directly by cloning a copy of our git Source Code Repository
Make sure git is installed on your machine. You can download a copy here.
Download the PAPI repository the first time with the following command:
> git clone https://icl.cs.utk.edu/git/papi.git
This creates a complete copy of the papi git repository on your computer in a folder called 'papi'.
To make sure your copy is up to date with the repository:
> cd papi
> git pull https://icl.cs.utk.edu/git/papi.git
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