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openmpi/opal/mca/threads/configure.m4
Noah Evans ee3517427e Add threads framework
Add a framework to support different types of threading models including
user space thread packages such as Qthreads and argobot:

https://github.com/pmodels/argobots

https://github.com/Qthreads/qthreads

The default threading model is pthreads.  Alternate thread models are
specificed at configure time using the --with-threads=X option.

The framework is static.  The theading model to use is selected at
Open MPI configure/build time.

mca/threads: implement Argobots threading layer

config: fix thread configury

- Add double quotations
- Change Argobot to Argobots
config: implement Argobots check

If the poll time is too long, MPI hangs.

This quick fix just sets it to 0, but it is not good for the
Pthreads version. Need to find a good way to abstract it.

Note that even 1 (= 1 millisecond) causes disastrous performance
degradation.

rework threads MCA framework configury

It now works more like the ompi/mca/rte configury,
modulo some edge items that are special for threading package
linking, etc.

qthreads module
some argobots cleanup

Signed-off-by: Noah Evans <noah.evans@gmail.com>
Signed-off-by: Shintaro Iwasaki <siwasaki@anl.gov>
Signed-off-by: Howard Pritchard <howardp@lanl.gov>
2020-03-27 10:15:45 -06:00

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 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) 2019 Sandia National Laboratories. All rights reserved.
dnl Copyright (c) 2019 Triad National Security, LLC. All rights
dnl reserved.
dnl
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
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dnl we only want one :)
m4_define(MCA_opal_threads_CONFIGURE_MODE, STOP_AT_FIRST)
AC_DEFUN([MCA_opal_threads_CONFIG],[
#
# Arguments: none
#
# Dependencies: None
#
# Modifies:
# none - see called tests
#
# configure threads
#
#
# First see what kind of threads we are going to use
#
AC_ARG_WITH([threads],
[AC_HELP_STRING([--with-threads=TYPE],
[Specify thread TYPE to use. default:pthreads. Other options are qthreads and argobots.])])
#
# Configure components
#
MCA_CONFIGURE_FRAMEWORK($1, $2, 1)
AS_IF([test x"$opal_thread_type_found" = x""],
[AC_MSG_ERROR([Did not find a suitable threads component])])
AC_MSG_RESULT([Found thread type $opal_thread_type_found])
OPAL_SUMMARY_ADD([[Miscellaneous]],[[Threading Package]],[], [$opal_thread_type_found])
])dnl