[Valgrind-users] Understand valgrind output when checking a fortran code for memory leaks

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Hi all,

I am having troubles understanding the outputs generated by valgrind.

I compile my fortran code with the following flags:  -c -tp x64 -r8 -i4
-Mnolre -Mnovect -Mnounroll -g

I start it using valgrind doing: valgrind --tool=memcheck --leak-check=full
./rsiNE 54 2002SK1 NAEUa

rsiNE is a csh script starts the code with some parameters and file names
doing:
#!/bin/csh
./paleonSG<< EOF >& out.pal
4 1 1
02
...
...
...
EOF

I use Valgrind-3.5.0 and added the apport-valgrind package

The output results are:

==4880== HEAP SUMMARY:
==4880==     in use at exit: 174,555 bytes in 2,130 blocks
==4880==   total heap usage: 53,125 allocs, 50,995 frees, 16,456,811 bytes
allocated
==4880==
==4880== 4 bytes in 1 blocks are definitely lost in loss record 7 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x439361: ??? (in /bin/tcsh)
==4880==    by 0x43F964: ??? (in /bin/tcsh)
==4880==    by 0x415F14: ??? (in /bin/tcsh)
==4880==    by 0x412012: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x410EBE: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==
==4880== 8 bytes in 1 blocks are definitely lost in loss record 18 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41B33B: ??? (in /bin/tcsh)
==4880==    by 0x404ABC: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x404D84: ??? (in /bin/tcsh)
==4880==    by 0x406910: ??? (in /bin/tcsh)
==4880==    by 0x3522A1D9F3: (below main) (in /lib64/libc-2.5.so)
==4880==
==4880== 8 bytes in 1 blocks are definitely lost in loss record 19 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41B33B: ??? (in /bin/tcsh)
==4880==    by 0x404ABC: ??? (in /bin/tcsh)
==4880==    by 0x4067B9: ??? (in /bin/tcsh)
==4880==    by 0x3522A1D9F3: (below main) (in /lib64/libc-2.5.so)
==4880==
==4880== 8 bytes in 1 blocks are definitely lost in loss record 20 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41B33B: ??? (in /bin/tcsh)
==4880==    by 0x404ABC: ??? (in /bin/tcsh)
==4880==    by 0x41677B: ??? (in /bin/tcsh)
==4880==    by 0x405FD9: ??? (in /bin/tcsh)
==4880==    by 0x3522A1D9F3: (below main) (in /lib64/libc-2.5.so)
==4880==
==4880== 16 bytes in 1 blocks are definitely lost in loss record 120 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41AFC8: ??? (in /bin/tcsh)
==4880==    by 0x410C43: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x404A42: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==
==4880== 24 bytes in 3 blocks are definitely lost in loss record 240 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41B33B: ??? (in /bin/tcsh)
==4880==    by 0x404ABC: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x404A42: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==
==4880== 104 bytes in 13 blocks are definitely lost in loss record 493 of
548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41B33B: ??? (in /bin/tcsh)
==4880==    by 0x404ABC: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x406734: ??? (in /bin/tcsh)
==4880==    by 0x3522A1D9F3: (below main) (in /lib64/libc-2.5.so)
==4880==
==4880== 920 bytes in 3 blocks are definitely lost in loss record 518 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41AFC8: ??? (in /bin/tcsh)
==4880==    by 0x410C43: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F7D8: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x404A42: ??? (in /bin/tcsh)
==4880==
==4880== 1,288 bytes in 4 blocks are definitely lost in loss record 522 of
548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x4392EA: ??? (in /bin/tcsh)
==4880==    by 0x41AFC8: ??? (in /bin/tcsh)
==4880==    by 0x410C43: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F7D8: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x404D84: ??? (in /bin/tcsh)
==4880==
==4880== 2,200 (800 direct, 1,400 indirect) bytes in 1 blocks are
definitely lost in loss record 528 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x439361: ??? (in /bin/tcsh)
==4880==    by 0x415338: ??? (in /bin/tcsh)
==4880==    by 0x415E6D: ??? (in /bin/tcsh)
==4880==    by 0x4133F1: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x406734: ??? (in /bin/tcsh)
==4880==    by 0x3522A1D9F3: (below main) (in /lib64/libc-2.5.so)
==4880==
==4880== 8,148 (1,040 direct, 7,108 indirect) bytes in 1 blocks are
definitely lost in loss record 542 of 548
==4880==    at 0x4A0610C: malloc (vg_replace_malloc.c:195)
==4880==    by 0x439361: ??? (in /bin/tcsh)
==4880==    by 0x43FF0A: ??? (in /bin/tcsh)
==4880==    by 0x411C0F: ??? (in /bin/tcsh)
==4880==    by 0x412020: ??? (in /bin/tcsh)
==4880==    by 0x41FD30: ??? (in /bin/tcsh)
==4880==    by 0x41F827: ??? (in /bin/tcsh)
==4880==    by 0x403BC4: ??? (in /bin/tcsh)
==4880==    by 0x40470B: ??? (in /bin/tcsh)
==4880==    by 0x404931: ??? (in /bin/tcsh)
==4880==    by 0x404D84: ??? (in /bin/tcsh)
==4880==    by 0x406910: ??? (in /bin/tcsh)
==4880==
==4880== LEAK SUMMARY:
==4880==    definitely lost: 4,220 bytes in 30 blocks
==4880==    indirectly lost: 8,508 bytes in 143 blocks
==4880==      possibly lost: 0 bytes in 0 blocks
==4880==    still reachable: 161,827 bytes in 1,957 blocks
==4880==         suppressed: 0 bytes in 0 blocks
==4880== Reachable blocks (those to which a pointer was found) are not
shown.
==4880== To see them, rerun with: --leak-check=full --show-reachable=yes
==4880==
==4880== For counts of detected and suppressed errors, rerun with: -v
==4880== ERROR SUMMARY: 11 errors from 11 contexts (suppressed: 4 from 4)

Any idea of what I am doing wrong??

Thanks in advance for any clarification.

-- 
Kevin Le Morzadec - Ph.D. candidate
                               Dept of Physics and Physical Oceanography,
                               Memorial University of Newfoundland, Canada
                               Tel 709-864-8654