<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I did 2 things:<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">- use mpich-3.1.3<br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">- configure it with --enable-g=meminit<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Now there is no warning at all, see attached. Is it too good to be true?<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Sherry<br><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 2, 2016 at 2:22 PM, Satish Balay <span dir="ltr"><<a href="mailto:balay@mcs.anl.gov" target="_blank">balay@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Also suggest using mpich-3.1.3 - as latest mpich is not valgrind clean.<br>
<span class="HOEnZb"><font color="#888888"><br>
Satish<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
On Wed, 2 Mar 2016, Barry Smith wrote:<br>
<br>
><br>
> When you configured MPICH did you use the flag --enable-g=meminit so it would not generate its own valgrind errors?<br>
><br>
> Barry<br>
><br>
> > On Mar 2, 2016, at 4:11 PM, Xiaoye S. Li <<a href="mailto:xsli@lbl.gov">xsli@lbl.gov</a>> wrote:<br>
> ><br>
> > I check that file, it also show not stripped. Not sure why it doesn't work. Now I am using static library build to run valgrind, which works fine.<br>
> ><br>
> > Now on to the valgrind output, I see quite a few warnings are unnecessary. For example,<br>
> ><br>
> > ==13292== Conditional jump or move depends on uninitialised value(s)<br>
> > ==13292== at 0x5452D86: MPIC_Waitall (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > ==13292== by 0x53AB23F: MPIR_Alltoall_intra (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > ==13292== by 0x53ABFD4: MPIR_Alltoall (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > ==13292== by 0x53AC08D: MPIR_Alltoall_impl (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > ==13292== by 0x53AC896: PMPI_Alltoall (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > ==13292== by 0x418161: dReDistribute_A (pddistribute.c:108)<br>
> > ==13292== by 0x41950B: pddistribute (pddistribute.c:450)<br>
> > ==13292== by 0x407D6A: pdgssvx (pdgssvx.c:1080)<br>
> > ==13292== by 0x4027E5: main (pddrive.c:171)<br>
> ><br>
> > The line in pddistribute.c: 108 is this:<br>
> ><br>
> > MPI_Alltoall( nnzToSend, 1, mpi_int_t, nnzToRecv, 1, mpi_int_t,<br>
> > grid->comm);<br>
> ><br>
> > For both buffers nnzToSend and nnzToRecv, I use "calloc" version to allocate memory, i.e., malloc first, followed by zeroing the buffer.<br>
> > mpi_int_t is defined as MPI_INT.<br>
> > Why does it complain about uninitialized values?<br>
> ><br>
> ><br>
> > Sherry<br>
> ><br>
> ><br>
> ><br>
> ><br>
> > On Tue, Mar 1, 2016 at 8:27 PM, Satish Balay <<a href="mailto:balay@mcs.anl.gov">balay@mcs.anl.gov</a>> wrote:<br>
> > sometimes 'cmake' does a 'strip' during install of the library [which<br>
> > can delete the debug symbols]. We had to track this down for one of<br>
> > the cmake packages. I don't remember what we did to workarround it..<br>
> ><br>
> > >><br>
> > petsc@es:/scratch/petsc/petsc/arch-linux-pkgs-valgrind/lib$ file libsuperlu_dist.so.5.0.0<br>
> > libsuperlu_dist.so.5.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped<br>
> > <<<br>
> ><br>
> > looks like superlu_dist installed by petsc is not stripped. Perhaps<br>
> > you can try:<br>
> ><br>
> > file /home/xiaoye/Dropbox/Codes/SuperLU/superlu_dist.git/lib/libsuperlu_dist.so.5.0.0<br>
> ><br>
> > Satish<br>
> ><br>
> > On Tue, 1 Mar 2016, Barry Smith wrote:<br>
> ><br>
> > ><br>
> > > Satish will know far better than me. I only use Linux when my Mac OS fails me :-(<br>
> > ><br>
> > ><br>
> > > > On Mar 1, 2016, at 8:41 PM, Xiaoye S. Li <<a href="mailto:xsli@lbl.gov">xsli@lbl.gov</a>> wrote:<br>
> > > ><br>
> > > > This is on linux (ubunto). I did compile with -g, but only the example driver (which is outside library) shows the line number, the routine in the *.so does not show line number, see this:<br>
> > > ><br>
> > > > ==31609== Conditional jump or move depends on uninitialised value(s)<br>
> > > > ==31609== at 0x51EED86: MPIC_Waitall (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > > > ==31609== by 0x5148F99: MPIR_Alltoallv_intra (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > > > ==31609== by 0x5149916: MPIR_Alltoallv (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > > > ==31609== by 0x51499F6: MPIR_Alltoallv_impl (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > > > ==31609== by 0x514A0C7: PMPI_Alltoallv (in /home/xiaoye/mpich-install/lib/libmpi.so.12.1.0)<br>
> > > > ==31609== by 0x4E7C56A: pdCompRow_loc_to_CompCol_global (in /home/xiaoye/Dropbox/Codes/SuperLU/superlu_dist.git/lib/libsupe\<br>
> > > > rlu_dist.so.5.0.0)<br>
> > > > ==31609== by 0x4E71761: pdgssvx (in /home/xiaoye/Dropbox/Codes/SuperLU/superlu_dist.git/lib/libsuperlu_dist.so.5.0.0)<br>
> > > > ==31609== by 0x401400: main (pddrive.c:171)<br>
> > > ><br>
> > > ><br>
> > > > Here are the flags:<br>
> > > ><br>
> > > > C_FLAGS = -DUSE_VENDOR_BLAS -DAdd_ -DDEBUGlevel=0 -DPRNTlevel=0 -std=c99 -g -fPIC -I/home/xiaoye/Dropbox/Codes/SuperLU/superl\<br>
> > > > u_dist.git/SRC -I/home/xiaoye/lib/parmetis-4.0.3/include -I/home/xiaoye/lib/parmetis-4.0.3/metis/include -I/home/xiaoye/mpich-\<br>
> > > > install/include<br>
> > > ><br>
> > > ><br>
> > > > Any idea?<br>
> > > > Sherry<br>
> > > ><br>
> > > ><br>
> > > > On Tue, Mar 1, 2016 at 6:00 PM, Barry Smith <<a href="mailto:bsmith@mcs.anl.gov">bsmith@mcs.anl.gov</a>> wrote:<br>
> > > ><br>
> > > > > On Mar 1, 2016, at 7:41 PM, Xiaoye S. Li <<a href="mailto:xsli@lbl.gov">xsli@lbl.gov</a>> wrote:<br>
> > > > ><br>
> > > > > Barry,<br>
> > > > ><br>
> > > > > I am cleaning up the valgrind errors. I did a build with shared library option, but valgrind doesn't give me the source code line number. Is it true that I need to build as static library?<br>
> > > ><br>
> > > > No but if you are running on an Apple you may need the additional valgrind option --dsymutil=yes (yes it is totally goofy that it doesn't just do this automatically). Also, of course, the source code needs be compiled with the -g option.<br>
> > > ><br>
> > > > Barry<br>
> > > ><br>
> > > > ><br>
> > > > > Sherry<br>
> > > > ><br>
> > > ><br>
> > > ><br>
> > ><br>
> > ><br>
> ><br>
> ><br>
><br>
><br>
<br>
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