BLCR 0.5.0_b3 (beta) release now available

From: Paul H. Hargrove (PHHargrove_at_lbl_dot_gov)
Date: Wed Feb 14 2007 - 11:55:50 PST

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    A third (and hopefully final) beta release of BLCR 0.5.0 is now
    available at
    There are two changes since Monday's beta2:
      - Fix bug1925 - pthread_atfork() link failure on fc5
      - Fix rpm specfile for --disable-multilib and/or --enable-static
    Below is the full NEWS entry, relative to the Nov. 2005 0.4.2 release.
    This will become 0.5.0 in about 7 days, unless significant new bugs are
    You are receiving this either because you are on the checkpoint_at_lbl_dot_gov
    list, or because you've recently sent email to the list (or me directly)
    asking about BLCR status.
    February 14, 2007
    Functionality and expanded-support release.
     - Expanded kernel coverage
       + 2.6.0 through 2.6.19 for x86 and x86_64
       + 2.4.0 through 2.4.34 for x86 only
     - Multi-process support (related processes and associated pipes)
       + See BLCR_Users_Guide.html and the cr_checkpoint man page
     - Support for 32-bit apps on 64-bit kernels
       + See "--enable-multilib" in BLCR_Admin_Guide.html
     - Support for directories opened with opendir()
     - Support for checkpoints on Luster file systems
       + Contributed by Dean Luick <luick_at_cray_dot_com>
     - Support for building static libcr
       + Contributed by Dean Luick <luick_at_cray_dot_com>
     - Fixes to many distclean problems
       + Issues identified by Dean Luick <luick_at_cray_dot_com>
     - I/O aggregation for improved performance
       + Contributed by Qi Gao <>
     - Additional examples and test cases
     - API addition: cr_get_restart_info()
     - "Retool" of configure code for ease of addition/maintenance
     - Numerous bug fixes, including:
       + Bug 1396: SIGPIPE when restarting w/ stdin/out from/to a pipe
       + Bug 1640: context files > 2GB require O_LARGEFILE
       + Bug 1662: context files open R/W leads to restart failure
       + Bug 1669: checkpoint to a socket fails
       + Bug 1807: unrecognized warning suppression flag passed to gcc
       + Bug 1854: libcr link failure w/ stack-protection-enabled gcc
       + Bug 1925: link failure w/ pthread_atfork() on some glibc versions
       + Incorrect treatment of certain anonymous mmap() cases
       + Wrong parent for restored orphans (children of init)
       + dup()ed file descriptors always restored together
    Paul H. Hargrove                          PHHargrove_at_lbl_dot_gov
    Future Technologies Group
    HPC Research Department                   Tel: +1-510-495-2352
    Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900

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