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openmpi/config/opal_config_threads.m4
Brian Barrett 6ef938de3f * Per the Developer's meeting today, restructure the threading in Open MPI a bit
more:
  - Remove OPAL_ENABLE_MULTI_THREADS, since it didn't really do anything
    correctly.  Opal always has threads enabled at this point.
  - Remove OMPI_ENABLE_PROGRESS_THREADS, since this hasn't worked in
    8 years and it has performance issues we'll never be able to
    overcome.  Note that we have plans for re-adding async progress, using
    a hybrid protocol of async and sync sends.
  - OMPI_ENABLE_THREAD_MULTIPLE now determines whether the thread lock
    macros do the check or not.
  - Condition variables are ALWAYS polling right now, which fixes the thread
    live-lock currently found when THREAD_MULTIPLE is turned on.

This commit was SVN r29891.
2013-12-13 19:40:12 +00:00

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dnl
dnl Copyright (c) 2004-2010 The Trustees of Indiana University and Indiana
dnl University Research and Technology
dnl Corporation. All rights reserved.
dnl Copyright (c) 2004-2005 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
dnl University of Stuttgart. All rights reserved.
dnl Copyright (c) 2004-2005 The Regents of the University of California.
dnl All rights reserved.
dnl Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
dnl Copyright (c) 2009-2011 Oak Ridge National Labs. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
AC_DEFUN([OPAL_CONFIG_THREADS],[
#
# Arguments: none
#
# Dependencies: None
#
# Modifies:
# none - see called tests
#
# configure threads
#
# create templates
AH_TEMPLATE([OPAL_HAVE_SOLARIS_THREADS],
[Do we have native Solaris threads])
AH_TEMPLATE([OPAL_HAVE_POSIX_THREADS],
[Do we have POSIX threads])
#
# Check for thread types - add your type here...
#
OMPI_CONFIG_POSIX_THREADS(HAVE_POSIX_THREADS=1, HAVE_POSIX_THREADS=0)
AC_MSG_CHECKING([for working POSIX threads package])
if test "$HAVE_POSIX_THREADS" = "1" ; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
export HAVE_POSIX_THREADS
OMPI_CONFIG_SOLARIS_THREADS(HAVE_SOLARIS_THREADS=1, HAVE_SOLARIS_THREADS=0)
AC_MSG_CHECKING([for working Solaris threads package])
if test "$HAVE_SOLARIS_THREADS" = "1" ; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
export HAVE_SOLARIS_THREADS
#
# Ask what threading we want (allow solaris / posix right now)
#
AC_MSG_CHECKING([for type of thread support])
AC_ARG_WITH(threads,
AC_HELP_STRING([--with-threads],
[Set thread type (solaris / posix)]),
[THREAD_TYPE=$withval])
if test "$THREAD_TYPE" = "solaris"; then
if test "$HAVE_SOLARIS_THREADS" = "0"; then
AC_MSG_WARN(["*** You have chosen Solaris threads, which are not"])
AC_MSG_WARN(["*** available on your system "])
AC_MSG_ERROR(["*** Can not continue"])
fi
elif test "$THREAD_TYPE" = "posix"; then
if test "$HAVE_POSIX_THREADS" = "0"; then
AC_MSG_WARN(["*** You have chosen POSIX threads, which are not"])
AC_MSG_WARN(["*** available on your system "])
AC_MSG_ERROR(["*** Can not continue"])
fi
elif test "$THREAD_TYPE" = "no"; then
THREAD_TYPE="none"
elif test -z "$THREAD_TYPE" -o "$THREAD_TYPE" = "yes"; then
# Actual logic here - properly set THREAD_TYPE - we go for system
# optimized where ever possible
case "$host" in
*solaris*)
if test "$HAVE_SOLARIS_THREADS" = "1"; then
THREAD_TYPE="solaris"
elif test "$HAVE_POSIX_THREADS" = "1"; then
THREAD_TYPE="posix"
else
THEAD_TYPE="none found"
fi
;;
*)
if test "$HAVE_POSIX_THREADS" = "1"; then
THREAD_TYPE="posix"
else
THREAD_TYPE="none found"
fi
;;
esac
else
AC_MSG_WARN(["*** You have specified a thread type that I do not"])
AC_MSG_WARN(["*** understand. Valid options are posix and solaris"])
AC_MSG_ERROR(["*** Can not continue."])
fi
AC_MSG_RESULT($THREAD_TYPE)
#
# Ok, now run the configuration for that thread package.
#
# Blah - this should be made better, but I don't know how...
#
if test "$THREAD_TYPE" = "solaris"; then
AC_DEFINE(OPAL_HAVE_SOLARIS_THREADS, 1)
AC_DEFINE(OPAL_HAVE_POSIX_THREADS, 0)
THREAD_CFLAGS="$STHREAD_CFLAGS"
THREAD_FCFLAGS="$STHREAD_FCFLAGS"
THREAD_CXXFLAGS="$STHREAD_CXXFLAGS"
THREAD_CPPFLAGS="$STHREAD_CPPFLAGS"
THREAD_CXXCPPFLAGS="$STHREAD_CXXCPPFLAGS"
THREAD_LDFLAGS="$STHREAD_LDFLAGS"
THREAD_LIBS="$STHREAD_LIBS"
elif test "$THREAD_TYPE" = "posix"; then
AC_DEFINE(OPAL_HAVE_SOLARIS_THREADS, 0)
AC_DEFINE(OPAL_HAVE_POSIX_THREADS, 1)
THREAD_CFLAGS="$PTHREAD_CFLAGS"
THREAD_FCFLAGS="$PTHREAD_FCFLAGS"
THREAD_CXXFLAGS="$PTHREAD_CXXFLAGS"
THREAD_CPPFLAGS="$PTHREAD_CPPFLAGS"
THREAD_CXXCPPFLAGS="$PTHREAD_CXXCPPFLAGS"
THREAD_LDFLAGS="$PTHREAD_LDFLAGS"
THREAD_LIBS="$PTHREAD_LIBS"
OPAL_CHECK_PTHREAD_PIDS
else
AC_DEFINE(OPAL_HAVE_SOLARIS_THREADS, 0)
AC_DEFINE(OPAL_HAVE_POSIX_THREADS, 0)
TRHEAD_CFLAGS=
THREAD_FCFLAGS=
THREAD_CXXFLAGS=
THREAD_CPPFLAGS=
THREAD_CXXCPPFLAGS=
THREAD_LDFLAGS=
THREAD_LIBS=
if test "$THREAD_TYPE" != "none" ; then
cat <<EOF
************************************************************************
Open MPI was unable to find threading support on your system. The
OMPI development team is considering requiring threading support for
proper OMPI execution. This is in part because we are not aware of
any OpenFabrics users that do not have thread support -- so we need
you to e-mail the Open MPI Users mailing list to tell us if this is a
problem for you.
************************************************************************
EOF
fi
fi
AM_CONDITIONAL(OPAL_HAVE_POSIX_THREADS, test "$THREAD_TYPE" = "posix")
AM_CONDITIONAL(OPAL_HAVE_SOLARIS_THREADS, test "$THREAD_TYPE" = "solaris")
# Make sure we have threads
if test "$THREAD_TYPE" = "none" ; then
AC_MSG_ERROR([User requested MPI threads, but no threading model supported])
fi
AC_DEFINE_UNQUOTED([OPAL_ENABLE_MULTI_THREADS], [1],
[Whether we should enable thread support within the OPAL code base])
])dnl