10/03/2006 -- libhugetlbfs-1.0 Released After roughly one year in development, version 1.0 of libhugetlbfs is here. It can be downloaded from SourceForge or the OzLabs mirror: http://sourceforge.net/project/showfiles.php?group_id=156936 http://libhugetlbfs.ozlabs.org/snapshots/ After a series of preview releases, we have tested a huge array of the supported usage scenarios using benchmarks and real HPC applications. Usability and reliability have greatly improved. But... due to the incredible diversity of applications that exist, there is bound to be a few that will not work correctly. If using libhugetlbfs makes your application slower: * Play around with the different combinations of hugetlb malloc and the two different supported link types to see which combination works best. * Keep in mind that huge pages are a niche performance tweak and are not suitable for every type of application. They are specifically known to hurt performance in certain situations. If you experience problems: * You've already read the HOWTO document, but read through it again. It is full of hints, notes, warnings, and caveats that we have found over time. This is the best starting point for a quick resolution to your issue. * Make sure you have enough huge pages allocated. Even if you think you have enough, try increasing it to a number you know you will not use. * Set HUGETLB_VERBOSE=99 and HUGETLB_DEBUG=yes. These options increase the verbosity of the library and enable extra checking to help diagnose the problem. If the above steps do not help, send as much information about the problem (including all libhugetlbfs debug output) to email@example.com and we'll help out as much as we can. We will probably ask you to collect things like: straces, /proc/pid/maps and gdb back traces.