Hi All, I am wondering if anyone else can confirm this.
I have customers who have for a long time used HDF5-1.6.5. They recently switched to 1.8.1 and are seeing a 3-4x slow down in I/O performance to files in lustre filesystems. Note, I am talking about ONLY serial HDF5 here, not parallel. There is also a slowdown to standard ext3 and nfs filesystems but not as pronounced. Is anyone aware of any known, serious performance issues with 1.8.1? Mark -- Mark C. Miller, Lawrence Livermore National Laboratory ================!!LLNL BUSINESS ONLY!!================ [email protected] urgent: [email protected] T:8-6 (925)-423-5901 M/W/Th:7-12,2-7 (530)-753-8511 _______________________________________________ Hdf-forum is for HDF software users discussion. [email protected] http://mail.hdfgroup.org/mailman/listinfo/hdf-forum_hdfgroup.org
