Whats odd is totalview, STAT, and GDB see the correct values despite them being
in the B section. What does padb do differently?
This is a dynamic, optimized build of 1.5.5rc1.
-Nathan Hjelm
HPC-3, LANL
On Thu, 15 Dec 2011, Ashley Pittman wrote:
If I add a new symbol to orte/mca/debugger/base/debugger_base_open.c and
declare it in orte/mca/debugger/base/base.h, the same as MPIR_proctable_size is
defined then it appears in the .so but not in the binary, if I then reference
this variable in orte/tools/orterun/orterun.c the symbol appears in orterun.
It's definably coming from that declaration, what isn't so clear is how it's
getting into the binary. I can only assume that
orte/mca/debugger/base/debugger_base_fns.c is linked into the binary directly
and the symbol is optimised away in the case where it's defined but not used.
Ashley.
On 15 Dec 2011, at 22:09, Nathan Hjelm wrote:
orte/tools/orterun/debuggers.c does not exist anymore (its not in the 1.5.5rc1
tarball). I don't know why the symbols are showing up in section B of orterun.
Investigating now.
-Nathan Hjelm
HPC-3, LANL
On Thu, 15 Dec 2011, George Bosilca wrote:
On Dec 15, 2011, at 16:55 , Ashley Pittman wrote:
There is a problem with 1.5.5rc1 that prevents padb from loading the process
table start from the orterun process, what appears to be happening is that
MPIR_proctable and MPIR_proctable_size is present in both orterun itself and
also in libopen-rte.so, the code is correctly setting them in libopen-rte.so
however when gdb is picking the variable from orterun in preference and hence
padb is reading NULL values.
Indeed, there are two definitions, but a single declaration. This is true for
both the trunk and the 1.5.
./orte/mca/debugger/base/base.h:61:ORTE_DECLSPEC extern struct MPIR_PROCDESC
*MPIR_proctable;
./orte/mca/debugger/base/base.h:62:ORTE_DECLSPEC extern int MPIR_proctable_size;
./orte/mca/debugger/base/debugger_base_open.c:42:struct MPIR_PROCDESC
*MPIR_proctable = NULL;
./orte/mca/debugger/base/debugger_base_open.c:43:int MPIR_proctable_size = 0;
./orte/tools/orterun/debuggers.c:142:struct MPIR_PROCDESC *MPIR_proctable =
NULL;
./orte/tools/orterun/debuggers.c:143:int MPIR_proctable_size = 0;
george.
Attached is a log showing the problem, the only change I made to the source is
to add a call to orte_debugger_base_dump() before the return from
orte_debugger_base_init_after_spawn(), it looks like this could also have been
achieved via a debug setting but I couldn't see how.
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