Hello, makedumpfile-1.6.0 was scheduled in May, but still there is a unresolved issue so the release will be delayed. The issue is that the multi-thread feature doesn't work correctly on ia64, the generated dump is indefinite. The dumps below are generated by the same option (-cd31 + --num-thread=3). # ls -l -rw------- 1 kumagai kumagai 20607646 May 30 15:58 dumpfile.cd31-num3_take1 -rw------- 1 kumagai kumagai 20604049 May 30 16:14 dumpfile.cd31-num3_take2 -rw------- 1 kumagai kumagai 20603551 May 30 16:15 dumpfile.cd31-num3_take3 -rw------- 1 kumagai kumagai 20603551 May 30 16:16 dumpfile.cd31-num3_take4 -rw------- 1 kumagai kumagai 20607612 May 30 16:42 dumpfile.cd31-num3_take5 This happen only on ia64, doesn't happen on x86_64 and i386. So I suppose that this issue came from overlapped PT_LOAD. I'll continue to investigate, thanks for your patient. Regards, Atsushi Kumagai