Perhaps someone with a pathscale compiler support contract can investigate this with them.
Have them contact us if they want/need help understanding our atomics; we're happy to explain, etc. (the atomics are fairly localized to a small part of OMPI). On Feb 9, 2010, at 11:42 AM, Mostyn Lewis wrote: > All, > > FWIW, Pathscale is dying in the new atomics in 1.4.1 (and svn trunk) - > actually looping - > > from gdb: > > opal_progress_event_users_decrement () at > ../.././opal/include/opal/sys/atomic_impl.h:61 > 61 } while (0 == opal_atomic_cmpset_32(addr, oldval, oldval - delta)); > Current language: auto; currently asm > (gdb) where > #0 opal_progress_event_users_decrement () at > ../.././opal/include/opal/sys/atomic_impl.h:61 > #1 0x0000000000000001 in ?? () > #2 0x00002aec4cf6a5e0 in ?? () > #3 0x00000000000000eb in ?? () > #4 0x00002aec4cfb57e0 in ompi_mpi_init () at > ../.././ompi/runtime/ompi_mpi_init.c:818 > #5 0x00007fff5db3bd58 in ?? () > Backtrace stopped: previous frame inner to this frame (corrupt stack?) > (gdb) list > 56 { > 57 int32_t oldval; > 58 > 59 do { > 60 oldval = *addr; > 61 } while (0 == opal_atomic_cmpset_32(addr, oldval, oldval - delta)); > 62 return (oldval - delta); > 63 } > 64 #endif /* OPAL_HAVE_ATOMIC_SUB_32 */ > 65 > (gdb) > > DM > > On Tue, 9 Feb 2010, Jeff Squyres wrote: > > > FWIW, I have had terrible luck with the patschale compiler over the years. > > Repeated attempts to get support from them -- even when I was a paying > > customer -- resulted in no help (e.g., a pathCC bug with the OMPI C++ > > bindings that I filed years ago was never resolved). > > > > Is this compiler even supported anymore? I.e., is there a support > > department somewhere that you have a hope of getting any help from? > > > > I can't say for sure, of course, but if MPI hello world hangs, it smells > > like a compiler bug. You might want to attach to "hello world" in a > > debugger and see where it's hung. You might need to compile OMPI with > > debugging symbols to get any meaningful information. > > > > ** NOTE: My personal feelings about the pathscale compiler suite do not > > reflect anyone else's feelings in the Open MPI community. Perhaps someone > > could change my mind someday, but *I* have personally given up on this > > compiler. :-( > > > > > > On Feb 8, 2010, at 2:38 AM, Rafael Arco Arredondo wrote: > > > >> Hello, > >> > >> It does work with version 1.4. This is the hello world that hangs with > >> 1.4.1: > >> > >> #include <stdio.h> > >> #include <mpi.h> > >> > >> int main(int argc, char **argv) > >> { > >> int node, size; > >> > >> MPI_Init(&argc,&argv); > >> MPI_Comm_rank(MPI_COMM_WORLD, &node); > >> MPI_Comm_size(MPI_COMM_WORLD, &size); > >> > >> printf("Hello World from Node %d of %d.\n", node, size); > >> > >> MPI_Finalize(); > >> return 0; > >> } > >> > >> El mar, 26-01-2010 a las 03:57 -0500, Åke Sandgren escribió: > >>> 1 - Do you have problems with openmpi 1.4 too? (I don't, haven't built > >>> 1.4.1 yet) > >>> 2 - There is a bug in the pathscale compiler with -fPIC and -g that > >>> generates incorrect dwarf2 data so debuggers get really confused and > >>> will have BIG problems debugging the code. I'm chasing them to get a > >>> fix... > >>> 3 - Do you have an example code that have problems? > >> > >> -- > >> Rafael Arco Arredondo > >> Centro de Servicios de Informática y Redes de Comunicaciones > >> Universidad de Granada > >> > >> _______________________________________________ > >> users mailing list > >> us...@open-mpi.org > >> http://www.open-mpi.org/mailman/listinfo.cgi/users > >> > > > > > > -- > > Jeff Squyres > > jsquy...@cisco.com > > > > For corporate legal information go to: > > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > > > > _______________________________________________ > > users mailing list > > us...@open-mpi.org > > http://www.open-mpi.org/mailman/listinfo.cgi/users > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/