Hi all, There is a pre-release version of Darshan 2.2.1 available at http://www.mcs.anl.gov/darshan/download/. As with any pre-release, this 2.2.1-pre1 version should not be used in production. We may make changes before the final 2.2.1 release based on testing. We would love to hear feedback from anyone who would like to try it out, though. This release does a better job of tracking concurrent access from multi-threaded applications, which should be helpful for hybrid applications that use a combination of MPI and threading (or OpenMP). The other big change is significantly improved Cray support, although we intend to polish this further in upcoming releases. thanks, - the Darshan team darshan-2.2.1-pre1 Changelog ============= * significant improvements to how counters are handled in multi-threaded applications * initial (rough) documentation for using Darshan in the default Cray programming environment with static linking * bug fixes: - workarounds for various runtime problems with cuserid() and stat() in Cray environments - build problems with darshan-utils on some versions of OSX - accurate shared file statistics for libraries that use deferred opens