See the software page for details and to download the tarball.

We had a minor mishap with yesterday's PAPI 4.1.3 tarball. A few changes were inadvertently ommitted. A new tarball was uploaded to the software page at 3:30 ET today (Friday). If you downloaded PAPI 4.1.3 yesterday or this morning, you may want to download a new copy.

Thanks,

- the (chagrined) management

The PAPI 4.1.3 release is now available for download. This is a minor release of PAPI-C. It addresses a number of bugs and other issues that have surfaced since the 4.1.2 release. See the software page to download the tarball.

PAPI community,
We would like to announce that the PAPI CUDA component is now available from the PAPI cvs repository. The CUDA component is a hardware performance counter measurement technology for the NVIDIA CUDA platform which provides access to the hardware counters inside the GPU. PAPI CUDA is based on CUPTI support - shipped with CUDA 4.0rc - in the NVIDIA driver library. In any environment where the CUPTI-enabled driver is installed, the PAPI CUDA component can provide detailed performance counter information regarding the execution of GPU kernels. If users want to test the component, they will have to do a clean checkout from cvs. Also, we are planning on releasing PAPI 4.2 when NVIDIA has a stable CUDA release in case you want to wait for an official release.

Let us know if you have questions.
Thanks,

The PAPI 4.1.2.1 release is now available for download. This is a minor release of PAPI-C. It addresses a bug in event selection for Westmere processors. See the software page to download the tarball.

The PAPI 4.1.2 release is now available for download. This is a minor release of PAPI-C. It addresses a number of bugs and other issues that have surfaced since the 4.1.1 release. See the software page to download the tarball.

The PAPI 4.1.1 release is now available for download. This is a minor release of PAPI-C. It addresses a number of bugs and other issues that have surfaced since the 4.1.0 release. See the software page to download the tarball.

We've fixed a bug that was causing a crash in Blue Gene P. Go to the Software page and download Patch # 3 if this applies to you. Read more details there.

In order to help keep PAPI releases current, we're trying something different. PAPI patches will be made available periodically to help keep the most recent release up-to-date and bug free.

Visit the Software page to read about and download the first of the patches for PAPI 4.0.0.

After much too long a wait, Component PAPI, or PAPI-C, or PAPI 4.0.0 has finally arrived.

The inaugural release of Component PAPI represents a  significant architectural change from PAPI 3.7.x and earlier. As such, your  application must be recompiled and relinked to libpapi, the PAPI library for this version to work. PAPI-C is backward compatible with earlier versions of PAPI. All new library features are supported through new APIs and all old APIs still work as expected. Applications instrumented for PAPI should continue to work as expected with no changes.

Just in time for SC09, PAPI 3.7.1 is now available for download. This is an incremental release of Classic PAPI with a few bug fixes and a few new or improved features.

The newly released PAPI 3.7.0 runs great on the newly upgraded Jaguar 6-Core XT5.

The latest release of PAPI Classic is here.

PAPI version 3.7.0 provides support for the latest processors from Intel and AMD, including Core i7 (Nehalem) and Atom, Shanghai and Istanbul.

In a blatant attempt to remain trendy and relevant, PAPI now has its very own User Discussion Forum. You can find it at: http://icl.cs.utk.edu/papi/forum/, or by following the link at the bottom left of the PAPI web page. Of course, we'll continue to maintain our mailing lists, but anyone who is truly cool will want to start their own topic in this forum -- or at least chime in on someone else's topic. Register now. It's easy. The more people that use it, the more value it will have. You might even be the first to post!

PAPI now supports Intel's new Core i7 (Nehalem) processor. To download the development version of PAPI with this support use cvs as described in this FAQ.

There's a bug in the papi_cost utility that grossly under-reports the start/stop times for PAPI execution.

To fix it, download the new source from: papi/src/utils/cost.c and rebuild.

We now support IBM POWER6 on AIX.

Really.

The incremental PAPI 3.6.1 release is here.

In addition to a handful of important bug fixes, this release also introduces support for SiCortex and Cell processors.

A pre-release of the new PAPI-C Component technology, PAPI-C version 3.9.0, is now available for select platforms.

If you missed the PAPI BOF at this year's Supercomputing, you can catch up on what's happening with Phil Mucci's BOF presentation slides, found here: [papi-bof-sc06.pdf]

The much anticipated (and much delayed) release of PAPI 3.5 is finally here. It adds support for Intel Core2Duo, and brings support for IBM Blue Gene and Cray XT3 into compatibility with the rest of the PAPI world.

The latest release of PAPI is a well tested stable release that includes support for AIX/POWER5 and enhanced support for Cray XT3.

A PAPI release is now available to provide support for IBM's Blue Gene / L. This release, based on the stable PAPI 2.3.4.3 core, is intended as a transitional release to provide immediate support for this important platform. Work is underway to port PAPI 3.x to Blue Gene as well.

A new technology release of PAPI 3 is now available.

It includes support for the POWER4, POWER5, and PowerPC970 platforms on Linux.

It also includes a number of bug fixes and enhancements.

A new maintenance release of PAPI 3.0 is now available.

PAPI 3.0.8.1 fixes installation problems with the utilities and their new man pages. The rest of the changes are summarized in the PAPI 3.0.8 release.

PAPI 3.0.8 addresses a number of issues of some significance to specific platforms.

For a complete description of the changes between PAPI 3.0.7 and PAPI 3.0.8, see the Release Notes

A new maintenance release of PAPI 3.0 is now available.

The Innovative Computing Laboratory at the University of Tennessee announces the recent release of PAPI 3.0.

It's been a long time coming, but PAPI 3 is finally here.

This release will be the final release before PAPI 3.0 comes out.

The latest PAPI 3.0.4 beta now supports the Cray X1.

The beta 3 release of PAPI 3 is now available for download.

Two separate installers are now available for running PAPI on your Windows machine.

PapiEx is a performance analysis tool designed to transparently and passively measure the hardware performance counters of an application.

The beta 2 release of PAPI 3 is now available for download.

So you'd like to upgrade your code to PAPI 3, but you're scared to take the plunge? The PAPI Conversion Cookbook is just what you need.

The PAPI 3.0 - beta tarball has been posted to the software download section.

Look for a tarball of the long-awaited PAPI 3.0 beta 1 release before the end of the week.

Please update your CVS/Root entries to point to the machine icl.cs.utk.edu.

Get the latest snapshot. You need to use PerfCtr version 2.5.x with this hardware.

This release fixes a couple of typos in the power Makefiles *Ok laugh*, and makes sure PAPI is shutdown in tests which is important for all those using Alpha-DADD. Download the release at: PAPI 2.3.4.3.

It's fixed in PAPI 2.3.4.2. Go ahead and snicker. We can take it.

Stop snickering. The only change in this tarball from PAPI 2.3.4 is 64-bit support on POWER 4. If that's not you, you can safely ignore this release.

This release fixes several bugs with Makefiles, multiplex support, locking, and other bug fixes. There is also better Pentium 4 support, for full details look at the HISTORY.txt file. See the software archive page for more details.

APART is a network of researchers and vendors interested in performance technology and tools. See the APART web page for details.

This version fixes various bugs and adds perfctr-2.4.5 support. This should add support for hyper-threading but has not been tested yet. See the software archive page for details.

This version adds libpfm2.0 support, *alpha* memory extensions and hardware overflow on Itanium. Bug fixes including making profile 64 bit safe, itanium out of order values returned,Makefile problems and various other bugs. See the software archive page for details.

Includes support for PAPI 2.3 architectures and alpha support for Pentium 4. See the software archive page for details.