From bug-request at octave dot org Fri Feb 4 11:01:10 2005 Subject: Re: pinv() runs forever From: David Bateman To: Bert dot Burgemeister at mailbox dot tu-dresden dot de CC: bug at octave dot org Date: Fri, 04 Feb 2005 18:02:42 +0100 See the thread on FC3, altas, lapack, gcc 3.4 and the famous -ffloat-store option. This is either a gcc or a lapack bug, to do with the over precision of calculations that aren't written back to memory. D. Bert Burgemeister wrote: > Bug report for Octave 2.1.64 configured for i686-pc-linux-gnu > > Description: > ----------- > > pinv() does never return in batch mode (not for hours or days). > In interactive mode, the first call of pinv does not return as well > but once stopped by control-C, following invocations work fine. > > As an attempted workaround, something like > function pseudoinv (X) inverse(X'*X)*X' endfunction > shows the same buggy behaviour. > > Repeat-By: > --------- > > Probably any invocation of pinv, e.g. > > pinv([[1;1;1;1],[4;5;6;7]]) > > > > > Configuration (please do not edit this section): > ----------------------------------------------- > > uname output: Linux vvastr190.vkw.tu-dresden.de 2.6.10-1.741_FC3 > #1 Thu Jan 13 16:38:22 EST 2005 i686 athlon i386 GNU/Linux > configure opts: > Fortran compiler: g77 > FFLAGS: -O -mieee-fp > F2C: > F2CFLAGS: > FLIBS: -L/usr/lib/gcc/i386-redhat-linux/3.4.2 > -L/usr/lib/gcc/i386-redhat-linux/3.4.2/../../.. -lfrtbegin -lg2c -lm > -lgcc_s > CPPFLAGS: > INCFLAGS: -I. -I. -I./liboctave -I./src -I./libcruft/misc > -I./glob -I./glob > C compiler: gcc, version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3) > CFLAGS: -g -O2 > CPICFLAG: -fPIC > C++ compiler: g++, version 3.4.2 > CXXFLAGS: -g -O2 > CXXPICFLAG: -fPIC > LD_CXX: g++ > LDFLAGS: > LIBFLAGS: -L. > RLD_FLAG: -Wl,-rpath -Wl,/usr/local/lib/octave-2.1.64 > BLAS_LIBS: -llapack -lblas > FFTW_LIBS: > LIBS: -lreadline -lncurses -lm > LEXLIB: > LIBPLPLOT: > LIBDLFCN: > LIBGLOB: ./glob/glob.o ./glob/fnmatch.o > SED: /bin/sed > DEFS: > > -DPACKAGE_NAME="" -DPACKAGE_TARNAME="" -DPACKAGE_VERSION="" > -DPACKAGE_STRING="" -DPACKAGE_BUGREPORT="" -DOCTAVE_SOURCE=1 > -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 > -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 > -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 > -DHAVE_UNISTD_H=1 -DSEPCHAR=1 -DSEPCHAR_STR=":" -D__NO_MATH_INLINES=1 > -DCXX_NEW_FRIEND_TEMPLATE_DECL=1 -DCXX_ISO_COMPLIANT_LIBRARY=1 > -DCXX_ABI=gnu_v3 -DHAVE_LIBM=1 -DHAVE_IEEE754_DATA_FORMAT=1 > -DF77_FUNC(name,NAME)=name ## _ -DF77_FUNC_(name,NAME)=name ## __ > -DHAVE_BLAS=1 -DHAVE_GETHOSTNAME=1 -DHAVE_GETPWNAM=1 -DHAVE_DEV_T=1 > -DHAVE_INO_T=1 -DHAVE_NLINK_T=1 -DHAVE_NLINK_T=1 -DHAVE_LONG_LONG_INT=1 > -DHAVE_UNSIGNED_LONG_LONG_INT=1 -DHAVE_SIGSET_T=1 -DHAVE_SIG_ATOMIC_T=1 > -DSIZEOF_SHORT=2 -DSIZEOF_INT=4 -DSIZEOF_LONG=4 -DSIZEOF_LONG_LONG=8 > -DHAVE_ALLOCA_H=1 -DHAVE_ALLOCA=1 -DNPOS=std::string::npos > -DHAVE_PLACEMENT_DELETE=1 -DHAVE_DYNAMIC_AUTO_ARRAYS=1 -DSTDC_HEADERS=1 > -DHAVE_DIRENT_H=1 -DTIME_WITH_SYS_TIME=1 -DHAVE_SYS_WAIT_H=1 > -DHAVE_ASSERT_H=1 -DHAVE_CURSES_H=1 -DHAVE_DLFCN_H=1 -DHAVE_FCNTL_H=1 > -DHAVE_FLOAT_H=1 -DHAVE_GRP_H=1 -DHAVE_LIMITS_H=1 -DHAVE_MEMORY_H=1 > -DHAVE_NCURSES_H=1 -DHAVE_POLL_H=1 -DHAVE_PWD_H=1 -DHAVE_STDLIB_H=1 > -DHAVE_STRING_H=1 -DHAVE_SYS_IOCTL_H=1 -DHAVE_SYS_PARAM_H=1 > -DHAVE_SYS_POLL_H=1 -DHAVE_SYS_RESOURCE_H=1 -DHAVE_SYS_SELECT_H=1 > -DHAVE_SYS_STAT_H=1 -DHAVE_SYS_TIME_H=1 -DHAVE_SYS_TIMES_H=1 > -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_UTSNAME_H=1 -DHAVE_TERMCAP_H=1 > -DHAVE_UNISTD_H=1 -DHAVE_SSTREAM=1 -DHAVE_TERMIO_H=1 -DHAVE_SGTTY_H=1 > -DHAVE_GLOB_H=1 -DHAVE_FNMATCH_H=1 -DHAVE_ATEXIT=1 -DHAVE_BASENAME=1 > -DHAVE_BCOPY=1 -DHAVE_BZERO=1 -DHAVE_DUP2=1 -DHAVE_ENDGRENT=1 > -DHAVE_ENDPWENT=1 -DHAVE_EXECVP=1 -DHAVE_FCNTL=1 -DHAVE_FORK=1 > -DHAVE_GETCWD=1 -DHAVE_GETEGID=1 -DHAVE_GETEUID=1 -DHAVE_GETGID=1 > -DHAVE_GETGRENT=1 -DHAVE_GETGRGID=1 -DHAVE_GETGRNAM=1 -DHAVE_GETPGRP=1 > -DHAVE_GETPID=1 -DHAVE_GETPPID=1 -DHAVE_GETPWENT=1 -DHAVE_GETPWUID=1 > -DHAVE_GETTIMEOFDAY=1 -DHAVE_GETUID=1 -DHAVE_GETWD=1 -DHAVE_KILL=1 > -DHAVE_LINK=1 -DHAVE_LOCALTIME_R=1 -DHAVE_LSTAT=1 -DHAVE_MEMMOVE=1 > -DHAVE_MKDIR=1 -DHAVE_MKFIFO=1 -DHAVE_MKSTEMP=1 -DHAVE_ON_EXIT=1 > -DHAVE_PIPE=1 -DHAVE_POLL=1 -DHAVE_PUTENV=1 -DHAVE_RAISE=1 > -DHAVE_READLINK=1 -DHAVE_RENAME=1 -DHAVE_RINDEX=1 -DHAVE_RMDIR=1 > -DHAVE_ROUND=1 -DHAVE_SELECT=1 -DHAVE_SETGRENT=1 -DHAVE_SETPWENT=1 > -DHAVE_SETVBUF=1 -DHAVE_SIGACTION=1 -DHAVE_SIGLONGJMP=1 > -DHAVE_SIGPENDING=1 -DHAVE_SIGPROCMASK=1 -DHAVE_SIGSUSPEND=1 > -DHAVE_STAT=1 -DHAVE_STRCASECMP=1 -DHAVE_STRDUP=1 -DHAVE_STRERROR=1 > -DHAVE_STRFTIME=1 -DHAVE_STRNCASECMP=1 -DHAVE_STRPTIME=1 > -DHAVE_SYMLINK=1 > -DHAVE_TEMPNAM=1 -DHAVE_UMASK=1 -DHAVE_UNLINK=1 -DHAVE_USLEEP=1 > -DHAVE_VFPRINTF=1 -DHAVE_VSPRINTF=1 -DHAVE_VSNPRINTF=1 -DHAVE_WAITPID=1 > -DHAVE_TIMEVAL=1 -DHAVE_FINITE=1 -DHAVE_ISNAN=1 -DHAVE_ISINF=1 > -DHAVE_COPYSIGN=1 -DHAVE_ACOSH=1 -DHAVE_ASINH=1 -DHAVE_ATANH=1 > -DHAVE_ERF=1 -DHAVE_ERFC=1 -DHAVE_STRUCT_STAT_ST_BLKSIZE=1 > -DHAVE_STRUCT_STAT_ST_BLOCKS=1 -DHAVE_STRUCT_STAT_ST_RDEV=1 > -DHAVE_STRUCT_TM_TM_ZONE=1 -DHAVE_TM_ZONE=1 -DUSE_READLINE=1 > -DEXCEPTION_IN_MATH=1 -DRETSIGTYPE=void -DSYS_SIGLIST_DECLARED=1 > -DHAVE_SYS_SIGLIST=1 -DHAVE_POSIX_SIGNALS=1 -DHAVE_GETRUSAGE=1 > -DHAVE_TIMES=1 -DYYTEXT_POINTER=1 -DGNUPLOT_BINARY="gnuplot" > -DGNUPLOT_HAS_FRAMES= > > User-preferences (please do not edit this section): > -------------------------------------------------- > > DEFAULT_EXEC_PATH = > "/usr/local/libexec/octave/2.1.64/site/exec/i686-pc-linux-gnu:/usr/local/libexec/octave/site/exec/i686-pc-linux-gnu:/usr/local/libexec/octave/2.1.64/exec/i686-pc-linux-gnu:/usr/local/bin" > > DEFAULT_LOADPATH = > ".:/usr/local/libexec/octave/2.1.64/site/oct/i686-pc-linux-gnu//:/usr/local/libexec/octave/site/oct/api-v12/i686-pc-linux-gnu//:/usr/local/libexec/octave/site/oct/i686-pc-linux-gnu//:/usr/local/share/octave/2.1.64/site/m//:/usr/local/share/octave/site/api-v12/m//:/usr/local/share/octave/site/m//:/usr/local/libexec/octave/2.1.64/oct/i686-pc-linux-gnu//:/usr/local/share/octave/2.1.64/m//" > > EDITOR = "emacs" > EXEC_PATH = > ":/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/lib/jre/bin" > > IMAGEPATH = ".:/usr/local/share/octave/2.1.64/imagelib//" > INFO_FILE = "/usr/local/info/octave.info" > INFO_PROGRAM = "info" > LOADPATH = ":" > PAGER = "less -e -P'-- less ?pB(%pB\\%):--. (f)orward, (b)ack, > (q)uit$'" > PS1 = "\\s:\\#> " > PS2 = "> " > PS4 = "+ " > automatic_replot = 1 > beep_on_error = 0 > completion_append_char = " " > crash_dumps_octave_core = 1 > default_save_format = "ascii" > echo_executing_commands = 0 > fixed_point_format = 0 > gnuplot_binary = "gnuplot" > gnuplot_command_end = "\n" > gnuplot_command_plot = "pl" > gnuplot_command_replot = "rep" > gnuplot_command_splot = "sp" > gnuplot_command_title = "t" > gnuplot_command_using = "u" > gnuplot_command_with = "w" > gnuplot_has_frames = 1 > history_file = "/home/bertb/.octave_hist" > history_size = 1024 > ignore_function_time_stamp = "system" > max_recursion_depth = 256 > output_max_field_width = 10 > output_precision = 5 > page_output_immediately = 0 > page_screen_output = 1 > print_answer_id_name = 1 > print_empty_dimensions = 1 > print_rhs_assign_val = 0 > # return_last_computed_value = > save_precision = 15 > saving_history = 1 > sighup_dumps_octave_core = 1 > sigterm_dumps_octave_core = 1 > silent_functions = 0 > split_long_rows = 1 > string_fill_char = " " > struct_levels_to_print = 2 > suppress_verbose_help_message = 0 > warn_assign_as_truth_value = 1 > warn_divide_by_zero = 1 > warn_empty_list_elements = 0 > warn_fortran_indexing = 0 > warn_function_name_clash = 1 > warn_future_time_stamp = 1 > warn_imag_to_real = 0 > warn_missing_semicolon = 0 > warn_neg_dim_as_zero = 0 > warn_num_to_str = 1 > warn_resize_on_range_error = 0 > warn_separator_insert = 0 > warn_single_quote_string = 0 > warn_str_to_num = 0 > warn_undefined_return_values = 1 > warn_variable_switch_label = 0 > > > > ------------------------------------------------------------- > Octave is freely available under the terms of the GNU GPL. > > Octave's home on the web: http://www.octave.org > How to fund new projects: http://www.octave.org/funding.html > Subscription information: http://www.octave.org/archive.html > ------------------------------------------------------------- > > -- David Bateman David dot Bateman at motorola dot com Motorola Labs - Paris +33 1 69 35 48 04 (Ph) Parc Les Algorithmes, Commune de St Aubin +33 1 69 35 77 01 (Fax) 91193 Gif-Sur-Yvette FRANCE The information contained in this communication has been classified as: [x] General Business Information [ ] Motorola Internal Use Only [ ] Motorola Confidential Proprietary ------------------------------------------------------------- Octave is freely available under the terms of the GNU GPL. 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