On 07/28/2015 01:47 PM, Jim Galarowicz wrote:
Hi Bill, all,
I cancelled my original post - too large. Resending a shortened version..
I sent mail to a NASA representative about the elf.h EM_ architecture
enumerated value.
The elf.h files that I've been able to locate only go up to the
enumerated value of 95.
The Intel MIC application seems to be indicating a value of 181.
As per one of your suggestions, I put a switch case block in for the
enum value of 181 in dwarfHandle.C and mapped it to
#define EM_X86_64 62 /* AMD x86-64 architecture */
From dwarfHandle.C:
Dyninst::Architecture arch;
fprintf(stderr,"file->e_machine()=%d\n", file->e_machine());
switch (file->e_machine()) {
case EM_386:
arch = Arch_x86;
break;
case EM_X86_64:
arch = Arch_x86_64;
break;
case EM_PPC:
arch = Arch_ppc32;
break;
case EM_PPC64:
arch = Arch_ppc64;
break;
//steve: added, defination found: /usr/include/linux/elf-em.h
case EM_ARM:
arch = Arch_aarch32;
break;
#if defined(arch_aarch64)
case EM_AARCH64:
arch = Arch_aarch64;
break;
#endif
* case 181:**
** arch = Arch_x86_64;**
** break;*
default:
assert(0 && "Unsupported architecture in ELF file.");
return false;
}
sw = Dwarf::DwarfFrameParser::create(*frame_data, arch);
init_dwarf_status = dwarf_status_ok;
return true;
}
The execution of dyninst on the Intel MIC binary completes with this
change in.
*However, we don't get any statement or loop information. It looks like
we are not finding any functions when we use the code below.**
**functions.size() is always 0.**
**Could this be because Dyninst doesn't have the correct architecture
settings to work with? Or were there more subtle changes to the API?*
I'm not sure. Can you send me a sample binary and an address you're
failing to get functions/loops at, and I can take a look?
(Do you guys try to get statement information through symtab directly,
or only through BPatch? If the latter, does going directly through
symtab work?)
--bw
std::vector<LoopInfo> getLoopsAt(const Address& address,
BPatch_image& image)
{
std::vector<LoopInfo> retval;
// Iterate over each module within the specified image
BPatch_Vector<BPatch_module*>* modules = image.getModules();
std::cerr << "DyninstSymbols.cxx: modules=" << modules <<
std::endl;
if (modules == NULL)
{
return retval;
}
std::cerr << "DyninstSymbols.cxx: modules->size()=" <<
modules->size() << std::endl;
for (unsigned int m = 0; m < modules->size(); ++m)
{
BPatch_module* module = (*modules)[m];
if (module == NULL)
{
continue;
}
Address module_base = (uint64_t)module->getBaseAddr();
// Find the function(s) containing the specified address
BPatch_Vector<BPatch_function*> functions;
*module->findFunctionByAddress( (void*)((module_base +
address).getValue()), functions, false, false);*
std::cerr << "DyninstSymbols.cxx: functions.size()=" <<
functions.size() << std::endl;
Here is the output from the OpenSpeedShop run:
PBS maia96 3> osspcsamp "mpiexec.hydra -host mic0 -np 30 ./nbody.mic"
[openss]: pcsamp experiment using the pcsamp experiment default
sampling rate: "100".
[openss]: pcsamp experiment calling openss.
[openss]: Setting up offline raw data directory in
/nobackup/jgalarow/offline-oss
[openss]: Running offline pcsamp experiment using the command:
"mpiexec.hydra -host mic0 -np 30
/nobackupp8/jgalarow/maia/ossoffline/compute/bin/ossrun -c pcsamp
./nbody.mic"
/nasa/mic_knc/mic/basic/basic.2.0/bin/modulecmd: Command not found.
Iteration 1 of 50...
Iteration 2 of 50...
..
..
Iteration 48 of 50...
Iteration 49 of 50...
Iteration 50 of 50...
[openss]: Converting raw data from /nobackup/jgalarow/offline-oss
into temp file X.0.openss
Processing raw data for nbody.mic ...
Processing processes and threads ...
Processing performance data ...
Processing symbols ...
Resolving symbols for /nobackupp8/jgalarow/demos/nbody/nbody.mic
file->e_machine()=181
file->e_machine()=62
Resolving symbols for /lib64/libc-2.14.90.so
--SERIOUS-- #68: Can't read executable file /lib64/libc-2.14.90.so:
No such file or directory
WARNING: Dyninst failed to open the linked object
"/lib64/libc-2.14.90.so"!
Resolving symbols for
/nasa/intel/impi/5.0.3.048/mic/lib/release_mt/libmpi.so.12.0
file->e_machine()=181
Resolving symbols for
/nobackupp8/jgalarow/maia/ossoffline/compute/lib64/openspeedshop/pcsamp-rt-offline.so
file->e_machine()=181
Resolving symbols for
/nasa/intel/impi/5.0.3.048/mic/lib/libmpifort.so.12.0
file->e_machine()=181
Updating database with symbols ...
Finished ...
[openss]: Restoring and displaying default view for:
/nobackupp8/jgalarow/demos/nbody/nbody.mic-pcsamp-4.openss
[openss]: The restored experiment identifier is: -x 1
Exclusive % of CPU Function (defining location)
CPU time Time
in
seconds.
154.130000 53.387600 main (nbody.mic)
98.710000 34.191202 __svml_div8_mask (nbody.mic)
33.140000 11.479044 MPIDI_CH3I_Progress (libmpi.so.12.0)
2.350000 0.813994 sqrt (nbody.mic)
0.060000 0.020783 MPIDI_CH3_iSendv (libmpi.so.12.0)
0.050000 0.017319 MPID_Isend (libmpi.so.12.0)
0.050000 0.017319 MPI_Irecv (libmpi.so.12.0)
0.040000 0.013855 MPI_Isend (libmpi.so.12.0)
0.020000 0.006928 __I_MPI___intel_lrb_memcpy (libmpifort.so.12.0)
0.020000 0.006928 MPIR_Waitall_impl (libmpi.so.12.0)
0.020000 0.006928 MPIDI_CH3_Request_destroy (libmpi.so.12.0)
0.020000 0.006928 MPIDI_CH3U_Recvq_FDU_or_AEP (libmpi.so.12.0)
0.010000 0.003464 MPIU_Handle_obj_alloc (libmpi.so.12.0)
0.010000 0.003464 MPIC_Wait (libmpi.so.12.0)
0.010000 0.003464 MPID_Irecv (libmpi.so.12.0)
0.010000 0.003464 MPIDI_CH3_PktHandler_EagerSend (libmpi.so.12.0)
0.010000 0.003464 MPIDI_nem_active_vc (libmpi.so.12.0)
0.010000 0.003464 MPID_Send (libmpi.so.12.0)
0.010000 0.003464 PMPI_Waitall (libmpi.so.12.0)
0.010000 0.003464 MPIDI_CH3I_Posted_recv_enqueued (libmpi.so.12.0)
0.010000 0.003464 MPIR_Allreduce_intra (libmpi.so.12.0)
PBS maia96 4> openss -cli -f
/nobackupp8/jgalarow/demos/nbody/nbody.mic-pcsamp-4.openss
openss>>[openss]: The restored experiment identifier is: -x 1
openss>>expview
Exclusive % of CPU Function (defining location)
CPU time Time
in
seconds.
154.130000 53.387600 main (nbody.mic)
98.710000 34.191202 __svml_div8_mask (nbody.mic)
33.140000 11.479044 MPIDI_CH3I_Progress (libmpi.so.12.0)
2.350000 0.813994 sqrt (nbody.mic)
0.060000 0.020783 MPIDI_CH3_iSendv (libmpi.so.12.0)
0.050000 0.017319 MPID_Isend (libmpi.so.12.0)
0.050000 0.017319 MPI_Irecv (libmpi.so.12.0)
0.040000 0.013855 MPI_Isend (libmpi.so.12.0)
0.020000 0.006928 __I_MPI___intel_lrb_memcpy (libmpifort.so.12.0)
0.020000 0.006928 MPIR_Waitall_impl (libmpi.so.12.0)
0.020000 0.006928 MPIDI_CH3_Request_destroy (libmpi.so.12.0)
0.020000 0.006928 MPIDI_CH3U_Recvq_FDU_or_AEP (libmpi.so.12.0)
0.010000 0.003464 MPIU_Handle_obj_alloc (libmpi.so.12.0)
0.010000 0.003464 MPIC_Wait (libmpi.so.12.0)
0.010000 0.003464 MPID_Irecv (libmpi.so.12.0)
0.010000 0.003464 MPIDI_CH3_PktHandler_EagerSend (libmpi.so.12.0)
0.010000 0.003464 MPIDI_nem_active_vc (libmpi.so.12.0)
0.010000 0.003464 MPID_Send (libmpi.so.12.0)
0.010000 0.003464 PMPI_Waitall (libmpi.so.12.0)
0.010000 0.003464 MPIDI_CH3I_Posted_recv_enqueued (libmpi.so.12.0)
0.010000 0.003464 MPIR_Allreduce_intra (libmpi.so.12.0)
openss>>expview -vstatements
(There are no objects specified for the basic Detail report.)
openss>>expview -vloops
(There are no objects specified for the basic Detail report.)
openss>>expview -v linkedobjects
Exclusive % of CPU LinkedObject
CPU time Time
in
seconds.
255.200000 88.270900 nbody.mic
33.730000 11.666840 libmpi.so.12.0
0.140000 0.048424 libc-2.14.90.so
0.030000 0.010377 libmpifort.so.12.0
0.010000 0.003459 pcsamp-rt-offline.so
openss>>
openss>>quit
On 07/28/2015 11:40 AM, Bill Williams wrote:
On 07/28/2015 11:31 AM, Jim Galarowicz wrote:
Hi Bill,
I've built dyninst from the latest git bits for dyninst and then changed
our source to get around the loop head API issue.
When I run using the new version of dyninst, I'm still getting the
architecture assert shown below.
Is there anything I can try to get around this issue?
Have you tracked down the target elf.h on maia? If I can get my hands
on the enums from that, I can (or you can, for that matter) patch
appropriately in that switch--it's entirely a matter of mapping ELF
machine IDs to the closest available dyninst architecture (if one
exists).
--
--bw
Bill Williams
Paradyn Project
bill@xxxxxxxxxxx
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