I've been working on debugging someone else's MPI code and am getting error messages that seem pretty strange to me
==32704== Memcheck, a memory error detector ==32704== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al. ==32704== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info ... ==32704== Unaddressable byte(s) found during client check request ... ==32704== Address 0x243e6040 is 16,384 bytes inside a block of size 1,048,576 alloc'd ... and ==32704== Invalid read of size 8 ... ==32704== Address 0x22fe2040 is 0 bytes inside a block of size 1,048,576 alloc'd ... and ==32704== Invalid write of size 8 ... ==32704== Address 0x22fe2048 is 8 bytes inside a block of size 1,048,576 alloc'd ... and on and on and on ... Are these valid errors? Everything I found online seemed to indicate that error addresses should not fall entirely inside allocated blocks. Thanks! -Tyson PS: This was run with --track-origins=yes and --leak-check=yes. ------------------------------------------------------------------------------ _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
