From 6357c3d07dc8d54c7cc90b43fe5e98ff884fdbf5 Mon Sep 17 00:00:00 2001
From: Moe Jette <jette1@llnl.gov>
Date: Mon, 16 Oct 2006 16:08:00 +0000
Subject: [PATCH] Add very simple gang scheduler.
---
configure | 5 +-
configure.ac | 1 +
src/plugins/sched/Makefile.am | 2 +-
src/plugins/sched/Makefile.in | 2 +-
src/plugins/sched/gang/Makefile.am | 17 +
src/plugins/sched/gang/Makefile.in | 561 ++++++++++++++++++++++++++++
src/plugins/sched/gang/gang.c | 197 ++++++++++
src/plugins/sched/gang/gang.h | 50 +++
src/plugins/sched/gang/sched_gang.c | 108 ++++++
9 files changed, 939 insertions(+), 4 deletions(-)
create mode 100644 src/plugins/sched/gang/Makefile.am
create mode 100644 src/plugins/sched/gang/Makefile.in
create mode 100644 src/plugins/sched/gang/gang.c
create mode 100644 src/plugins/sched/gang/gang.h
create mode 100644 src/plugins/sched/gang/sched_gang.c
diff --git a/configure b/configure
index 9f53303c4b2..236c0f7bcf7 100755
--- a/configure
+++ b/configure
@@ -3851,7 +3851,7 @@ if test "${with_proctrack+set}" = set; then
fi;
if test -f "$PROCTRACKDIR/lib/proctrackext.exp"; then
- PROCTRACKDIR="$PROCTRACKDIR/lib"
+ PROCTRACKDIR="$PROCTRACKDIR/lib"
CPPFLAGS="-I$PROCTRACKDIR/include $CPPFLAGS"
@@ -25868,7 +25868,7 @@ _ACEOF
- ac_config_files="$ac_config_files Makefile config.xml auxdir/Makefile src/Makefile src/api/Makefile src/common/Makefile src/sacct/Makefile src/salloc/Makefile src/sbatch/Makefile src/sattach/Makefile src/srun/Makefile src/slaunch/Makefile src/slurmd/Makefile src/slurmd/slurmd/Makefile src/slurmd/slurmstepd/Makefile src/slurmctld/Makefile src/sbcast/Makefile src/scontrol/Makefile src/scancel/Makefile src/squeue/Makefile src/sinfo/Makefile src/smap/Makefile src/sview/Makefile src/plugins/Makefile src/plugins/auth/Makefile src/plugins/auth/authd/Makefile src/plugins/auth/munge/Makefile src/plugins/auth/none/Makefile src/plugins/checkpoint/Makefile src/plugins/checkpoint/aix/Makefile src/plugins/checkpoint/none/Makefile src/plugins/jobacct/Makefile src/plugins/jobacct/linux/Makefile src/plugins/jobacct/aix/Makefile src/plugins/jobacct/none/Makefile src/plugins/jobcomp/Makefile src/plugins/jobcomp/filetxt/Makefile src/plugins/jobcomp/none/Makefile src/plugins/jobcomp/script/Makefile src/plugins/proctrack/Makefile src/plugins/proctrack/aix/Makefile src/plugins/proctrack/pgid/Makefile src/plugins/proctrack/linuxproc/Makefile src/plugins/proctrack/rms/Makefile src/plugins/proctrack/sgi_job/Makefile src/plugins/sched/Makefile src/plugins/sched/backfill/Makefile src/plugins/sched/builtin/Makefile src/plugins/sched/hold/Makefile src/plugins/sched/wiki2/Makefile src/plugins/select/Makefile src/plugins/select/bluegene/Makefile src/plugins/select/bluegene/block_allocator/Makefile src/plugins/select/bluegene/plugin/Makefile src/plugins/select/linear/Makefile src/plugins/select/cons_res/Makefile src/plugins/switch/Makefile src/plugins/switch/elan/Makefile src/plugins/switch/none/Makefile src/plugins/switch/federation/Makefile src/plugins/mpi/Makefile src/plugins/mpi/mpichgm/Makefile src/plugins/mpi/mvapich/Makefile src/plugins/mpi/lam/Makefile src/plugins/mpi/none/Makefile src/plugins/task/Makefile src/plugins/task/affinity/Makefile src/plugins/task/none/Makefile doc/Makefile doc/man/Makefile doc/html/Makefile doc/html/configurator.html testsuite/Makefile testsuite/expect/Makefile testsuite/slurm_unit/Makefile testsuite/slurm_unit/common/Makefile testsuite/slurm_unit/slurmctld/Makefile testsuite/slurm_unit/slurmd/Makefile testsuite/slurm_unit/api/Makefile testsuite/slurm_unit/api/manual/Makefile"
+ ac_config_files="$ac_config_files Makefile config.xml auxdir/Makefile src/Makefile src/api/Makefile src/common/Makefile src/sacct/Makefile src/salloc/Makefile src/sbatch/Makefile src/sattach/Makefile src/srun/Makefile src/slaunch/Makefile src/slurmd/Makefile src/slurmd/slurmd/Makefile src/slurmd/slurmstepd/Makefile src/slurmctld/Makefile src/sbcast/Makefile src/scontrol/Makefile src/scancel/Makefile src/squeue/Makefile src/sinfo/Makefile src/smap/Makefile src/sview/Makefile src/plugins/Makefile src/plugins/auth/Makefile src/plugins/auth/authd/Makefile src/plugins/auth/munge/Makefile src/plugins/auth/none/Makefile src/plugins/checkpoint/Makefile src/plugins/checkpoint/aix/Makefile src/plugins/checkpoint/none/Makefile src/plugins/jobacct/Makefile src/plugins/jobacct/linux/Makefile src/plugins/jobacct/aix/Makefile src/plugins/jobacct/none/Makefile src/plugins/jobcomp/Makefile src/plugins/jobcomp/filetxt/Makefile src/plugins/jobcomp/none/Makefile src/plugins/jobcomp/script/Makefile src/plugins/proctrack/Makefile src/plugins/proctrack/aix/Makefile src/plugins/proctrack/pgid/Makefile src/plugins/proctrack/linuxproc/Makefile src/plugins/proctrack/rms/Makefile src/plugins/proctrack/sgi_job/Makefile src/plugins/sched/Makefile src/plugins/sched/backfill/Makefile src/plugins/sched/builtin/Makefile src/plugins/sched/gang/Makefile src/plugins/sched/hold/Makefile src/plugins/sched/wiki2/Makefile src/plugins/select/Makefile src/plugins/select/bluegene/Makefile src/plugins/select/bluegene/block_allocator/Makefile src/plugins/select/bluegene/plugin/Makefile src/plugins/select/linear/Makefile src/plugins/select/cons_res/Makefile src/plugins/switch/Makefile src/plugins/switch/elan/Makefile src/plugins/switch/none/Makefile src/plugins/switch/federation/Makefile src/plugins/mpi/Makefile src/plugins/mpi/mpichgm/Makefile src/plugins/mpi/mvapich/Makefile src/plugins/mpi/lam/Makefile src/plugins/mpi/none/Makefile src/plugins/task/Makefile src/plugins/task/affinity/Makefile src/plugins/task/none/Makefile doc/Makefile doc/man/Makefile doc/html/Makefile doc/html/configurator.html testsuite/Makefile testsuite/expect/Makefile testsuite/slurm_unit/Makefile testsuite/slurm_unit/common/Makefile testsuite/slurm_unit/slurmctld/Makefile testsuite/slurm_unit/slurmd/Makefile testsuite/slurm_unit/api/Makefile testsuite/slurm_unit/api/manual/Makefile"
cat >confcache <<\_ACEOF
@@ -26594,6 +26594,7 @@ do
"src/plugins/sched/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/sched/Makefile" ;;
"src/plugins/sched/backfill/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/sched/backfill/Makefile" ;;
"src/plugins/sched/builtin/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/sched/builtin/Makefile" ;;
+ "src/plugins/sched/gang/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/sched/gang/Makefile" ;;
"src/plugins/sched/hold/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/sched/hold/Makefile" ;;
"src/plugins/sched/wiki2/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/sched/wiki2/Makefile" ;;
"src/plugins/select/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/plugins/select/Makefile" ;;
diff --git a/configure.ac b/configure.ac
index f1f846e4c34..350e24b70cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -281,6 +281,7 @@ AC_CONFIG_FILES([Makefile
src/plugins/sched/Makefile
src/plugins/sched/backfill/Makefile
src/plugins/sched/builtin/Makefile
+ src/plugins/sched/gang/Makefile
src/plugins/sched/hold/Makefile
src/plugins/sched/wiki2/Makefile
src/plugins/select/Makefile
diff --git a/src/plugins/sched/Makefile.am b/src/plugins/sched/Makefile.am
index 8a1b9ba6a06..0b3f99233c4 100644
--- a/src/plugins/sched/Makefile.am
+++ b/src/plugins/sched/Makefile.am
@@ -1,3 +1,3 @@
# Makefile for scheduler plugins
-SUBDIRS = backfill builtin hold wiki2
+SUBDIRS = backfill builtin gang hold wiki2
diff --git a/src/plugins/sched/Makefile.in b/src/plugins/sched/Makefile.in
index aeaa2c09377..fda18b02469 100644
--- a/src/plugins/sched/Makefile.in
+++ b/src/plugins/sched/Makefile.in
@@ -254,7 +254,7 @@ target_alias = @target_alias@
target_cpu = @target_cpu@
target_os = @target_os@
target_vendor = @target_vendor@
-SUBDIRS = backfill builtin hold wiki2
+SUBDIRS = backfill builtin gang hold wiki2
all: all-recursive
.SUFFIXES:
diff --git a/src/plugins/sched/gang/Makefile.am b/src/plugins/sched/gang/Makefile.am
new file mode 100644
index 00000000000..ec41427238c
--- /dev/null
+++ b/src/plugins/sched/gang/Makefile.am
@@ -0,0 +1,17 @@
+# Makefile for gang scheduler plugin
+
+AUTOMAKE_OPTIONS = foreign
+
+CXXFLAGS = -fexceptions
+
+PLUGIN_FLAGS = -module -avoid-version --export-dynamic
+
+INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src/common
+
+pkglib_LTLIBRARIES = sched_gang.la
+
+sched_gang_la_SOURCES = \
+ gang.c \
+ gang.h \
+ sched_gang.c
+sched_gang_la_LDFLAGS = $(SO_LDFLAGS) $(PLUGIN_FLAGS)
diff --git a/src/plugins/sched/gang/Makefile.in b/src/plugins/sched/gang/Makefile.in
new file mode 100644
index 00000000000..32c75ead62c
--- /dev/null
+++ b/src/plugins/sched/gang/Makefile.in
@@ -0,0 +1,561 @@
+# Makefile.in generated by automake 1.9 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004 Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Makefile for gang scheduler plugin
+
+SOURCES = $(sched_gang_la_SOURCES)
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ../../../..
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+INSTALL = @INSTALL@
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+host_triplet = @host@
+subdir = src/plugins/sched/gang
+DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
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+am__aclocal_m4_deps = $(top_srcdir)/auxdir/acx_pthread.m4 \
+ $(top_srcdir)/auxdir/slurm.m4 \
+ $(top_srcdir)/auxdir/x_ac__system_configuration.m4 \
+ $(top_srcdir)/auxdir/x_ac_affinity.m4 \
+ $(top_srcdir)/auxdir/x_ac_aix.m4 \
+ $(top_srcdir)/auxdir/x_ac_bluegene.m4 \
+ $(top_srcdir)/auxdir/x_ac_debug.m4 \
+ $(top_srcdir)/auxdir/x_ac_elan.m4 \
+ $(top_srcdir)/auxdir/x_ac_federation.m4 \
+ $(top_srcdir)/auxdir/x_ac_gpl_licensed.m4 \
+ $(top_srcdir)/auxdir/x_ac_gtk.m4 \
+ $(top_srcdir)/auxdir/x_ac_munge.m4 \
+ $(top_srcdir)/auxdir/x_ac_ncurses.m4 \
+ $(top_srcdir)/auxdir/x_ac_pam.m4 \
+ $(top_srcdir)/auxdir/x_ac_ptrace.m4 \
+ $(top_srcdir)/auxdir/x_ac_readline.m4 \
+ $(top_srcdir)/auxdir/x_ac_setpgrp.m4 \
+ $(top_srcdir)/auxdir/x_ac_setproctitle.m4 \
+ $(top_srcdir)/auxdir/x_ac_sgi_job.m4 \
+ $(top_srcdir)/auxdir/x_ac_slurm_ssl.m4 \
+ $(top_srcdir)/auxdir/x_ac_xcpu.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+ $(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h $(top_builddir)/slurm/slurm.h
+CONFIG_CLEAN_FILES =
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+ $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+ *) f=$$p;; \
+ esac;
+am__strip_dir = `echo $$p | sed -e 's|^.*/||'`;
+am__installdirs = "$(DESTDIR)$(pkglibdir)"
+pkglibLTLIBRARIES_INSTALL = $(INSTALL)
+LTLIBRARIES = $(pkglib_LTLIBRARIES)
+sched_gang_la_LIBADD =
+am_sched_gang_la_OBJECTS = gang.lo sched_gang.lo
+sched_gang_la_OBJECTS = $(am_sched_gang_la_OBJECTS)
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+am__depfiles_maybe = depfiles
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+ $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) \
+ $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
+ $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(LIBTOOL) --mode=link --tag=CC $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+ $(AM_LDFLAGS) $(LDFLAGS) -o $@
+SOURCES = $(sched_gang_la_SOURCES)
+DIST_SOURCES = $(sched_gang_la_SOURCES)
+ETAGS = etags
+CTAGS = ctags
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
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+host_vendor = @host_vendor@
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+prefix = @prefix@
+program_transform_name = @program_transform_name@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+sysconfdir = @sysconfdir@
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+target_alias = @target_alias@
+target_cpu = @target_cpu@
+target_os = @target_os@
+target_vendor = @target_vendor@
+AUTOMAKE_OPTIONS = foreign
+PLUGIN_FLAGS = -module -avoid-version --export-dynamic
+INCLUDES = -I$(top_srcdir) -I$(top_srcdir)/src/common
+pkglib_LTLIBRARIES = sched_gang.la
+sched_gang_la_SOURCES = \
+ gang.c \
+ gang.h \
+ sched_gang.c
+
+sched_gang_la_LDFLAGS = $(SO_LDFLAGS) $(PLUGIN_FLAGS)
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
+ && exit 0; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/plugins/sched/gang/Makefile'; \
+ cd $(top_srcdir) && \
+ $(AUTOMAKE) --foreign src/plugins/sched/gang/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+ cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+ esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+install-pkglibLTLIBRARIES: $(pkglib_LTLIBRARIES)
+ @$(NORMAL_INSTALL)
+ test -z "$(pkglibdir)" || $(mkdir_p) "$(DESTDIR)$(pkglibdir)"
+ @list='$(pkglib_LTLIBRARIES)'; for p in $$list; do \
+ if test -f $$p; then \
+ f=$(am__strip_dir) \
+ echo " $(LIBTOOL) --mode=install $(pkglibLTLIBRARIES_INSTALL) $(INSTALL_STRIP_FLAG) '$$p' '$(DESTDIR)$(pkglibdir)/$$f'"; \
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+ else :; fi; \
+ done
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+uninstall-pkglibLTLIBRARIES:
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+ @set -x; list='$(pkglib_LTLIBRARIES)'; for p in $$list; do \
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+ done
+
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+ @list='$(pkglib_LTLIBRARIES)'; for p in $$list; do \
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+ test "$$dir" != "$$p" || dir=.; \
+ echo "rm -f \"$${dir}/so_locations\""; \
+ rm -f "$${dir}/so_locations"; \
+ done
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+ $(LINK) -rpath $(pkglibdir) $(sched_gang_la_LDFLAGS) $(sched_gang_la_OBJECTS) $(sched_gang_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+ -rm -f *.$(OBJEXT)
+
+distclean-compile:
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+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/gang.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sched_gang.Plo@am__quote@
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+.c.o:
+@am__fastdepCC_TRUE@ if $(COMPILE) -MT $@ -MD -MP -MF "$(DEPDIR)/$*.Tpo" -c -o $@ $<; \
+@am__fastdepCC_TRUE@ then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@ DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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+
+.c.obj:
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+@am__fastdepCC_TRUE@ then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Po"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
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+.c.lo:
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+@am__fastdepCC_TRUE@ then mv -f "$(DEPDIR)/$*.Tpo" "$(DEPDIR)/$*.Plo"; else rm -f "$(DEPDIR)/$*.Tpo"; exit 1; fi
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+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
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+
+distclean-libtool:
+ -rm -f libtool
+uninstall-info-am:
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
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+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+ done | \
+ $(AWK) ' { files[$$0] = 1; } \
+ END { for (i in files) print i; }'`; \
+ mkid -fID $$unique
+tags: TAGS
+
+TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
+ $(TAGS_FILES) $(LISP)
+ tags=; \
+ here=`pwd`; \
+ list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
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+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
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+ tags=; \
+ here=`pwd`; \
+ list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
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+GTAGS:
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+distdir: $(DISTFILES)
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+ echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
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+clean-generic:
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
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+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/plugins/sched/gang/gang.c b/src/plugins/sched/gang/gang.c
new file mode 100644
index 00000000000..0f13ba89219
--- /dev/null
+++ b/src/plugins/sched/gang/gang.c
@@ -0,0 +1,197 @@
+/*****************************************************************************
+ * gang.c - Gang scheduler functions.
+ *****************************************************************************
+ * Copyright (C) 2006 The Regents of the University of California.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Morris Jette <jette1@llnl.gov>
+ * UCRL-CODE-217948.
+ *
+ * This file is part of SLURM, a resource management program.
+ * For details, see <http://www.llnl.gov/linux/slurm/>.
+ *
+ * SLURM is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * In addition, as a special exception, the copyright holders give permission
+ * to link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two. You must obey the GNU
+ * General Public License in all respects for all of the code used other than
+ * OpenSSL. If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not obligated to do
+ * so. If you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files in
+ * the program, then also delete it here.
+ *
+ * SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with SLURM; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+\*****************************************************************************/
+
+#include "./gang.h"
+#include "src/common/slurm_protocol_defs.h"
+#include "src/slurmctld/slurmctld.h"
+#include "src/slurmctld/locks.h"
+
+static bool thread_running = false;
+static bool thread_shutdown = false;
+static pthread_mutex_t thread_flag_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_t gang_thread_id;
+
+/* Global configuration parameters */
+uint16_t multi_prog_level = 2; /* maximum multi-programming level */
+uint16_t slice_time = 10; /* seconds */
+
+static bool _context_switch(void);
+static void * _gang_thread(void *no_data);
+static int _gang_resume_job(uint32_t jobid);
+static int _gang_suspend_job(uint32_t jobid);
+static void _parse_gang_config(void);
+
+
+/* _parse_gang_config - load gang scheduler configuration parameters.
+ * To read gang.conf configuration file, see _parse_wiki_config
+ * code in src/wiki/msg.c, or add parameters to main config file */
+static void
+_parse_gang_config(void)
+{
+ /* Reset multi_prog_level and slice_time as needed */
+}
+
+static int
+_gang_resume_job(uint32_t jobid)
+{
+ int slurm_rc;
+ suspend_msg_t msg;
+
+ msg.job_id = jobid;
+ msg.op = RESUME_JOB;
+ slurm_rc = job_suspend(&msg, 0, -1);
+ if (slurm_rc != SLURM_SUCCESS)
+ error("gang: Failed to resume job %u (%m)", jobid);
+ else
+ info("gang: Resumed job %u", jobid);
+ return slurm_rc;
+}
+
+static int
+_gang_suspend_job(uint32_t jobid)
+{
+ int slurm_rc;
+ suspend_msg_t msg;
+
+ msg.job_id = jobid;
+ msg.op = SUSPEND_JOB;
+ slurm_rc = job_suspend(&msg, 0, -1);
+ if (slurm_rc != SLURM_SUCCESS)
+ error("gang: Failed to suspend job %u (%m)", jobid);
+ else
+ info("gang: Suspended job %u", jobid);
+ return slurm_rc;
+}
+
+/* _context_switch - This is just a very simple proof of concept sample.
+ * The production version needs to maintain an Ousterhout matrix and
+ * make intelligent scheduling decisions. This version supports a
+ * multi-programming level of 2 only. In practice we'll want a
+ * time slice much larger than 10 seconds too, but that's fine for
+ * testing. - Moe */
+static bool
+_context_switch(void)
+{
+ bool run_scheduler = false;
+ struct job_record *job_ptr;
+ ListIterator job_iterator;
+
+ job_iterator = list_iterator_create(job_list);
+ while ((job_ptr = (struct job_record *) list_next(job_iterator))) {
+ if (job_ptr->job_state == JOB_RUNNING)
+ _gang_suspend_job(job_ptr->job_id);
+ else if (job_ptr->job_state == JOB_SUSPENDED) {
+ _gang_resume_job(job_ptr->job_id);
+ run_scheduler = true;
+ }
+ }
+ list_iterator_destroy(job_iterator);
+ return run_scheduler;
+}
+
+/* _gang_thread - A pthread to periodically perform gang scheduler context
+ * switches. */
+static void *
+_gang_thread(void *no_data)
+{
+ bool run_scheduler;
+
+ /* Locks: write job and node info */
+ slurmctld_lock_t job_write_lock = {
+ NO_LOCK, WRITE_LOCK, WRITE_LOCK, NO_LOCK };
+
+ while (!thread_shutdown) {
+ lock_slurmctld(job_write_lock);
+ run_scheduler = _context_switch();
+ unlock_slurmctld(job_write_lock);
+ if (run_scheduler)
+ schedule(); /* has own locking */
+ sleep(slice_time);
+ }
+ pthread_exit((void *) 0);
+}
+
+/*
+ * spawn_gang_thread - Create a pthread to perform gang scheduler actions
+ *
+ * NOTE: Create only one pthread in any plugin. Some systems leak memory on
+ * each pthread_create from within a plugin
+ */
+extern int
+spawn_gang_thread(void)
+{
+ pthread_attr_t thread_attr_msg;
+
+ pthread_mutex_lock( &thread_flag_mutex );
+ if (thread_running) {
+ error("gang thread already running, not starting another");
+ pthread_mutex_unlock(&thread_flag_mutex);
+ return SLURM_ERROR;
+ }
+
+ _parse_gang_config();
+ slurm_attr_init(&thread_attr_msg);
+ if (pthread_create(&gang_thread_id, &thread_attr_msg,
+ _gang_thread, NULL))
+ fatal("pthread_create %m");
+
+ slurm_attr_destroy(&thread_attr_msg);
+ thread_running = true;
+ pthread_mutex_unlock(&thread_flag_mutex);
+ return SLURM_SUCCESS;
+}
+
+extern void
+term_gang_thread(void)
+{
+ pthread_mutex_lock(&thread_flag_mutex);
+ if (thread_running) {
+ int i;
+ thread_shutdown = true;
+ for (i=0; i<4; i++) {
+ if (pthread_cancel(gang_thread_id)) {
+ gang_thread_id = 0;
+ break;
+ }
+ usleep(1000);
+ }
+ if (gang_thread_id)
+ error("Cound not kill gang pthread");
+ }
+ pthread_mutex_unlock(&thread_flag_mutex);
+}
+
diff --git a/src/plugins/sched/gang/gang.h b/src/plugins/sched/gang/gang.h
new file mode 100644
index 00000000000..482f1d375c8
--- /dev/null
+++ b/src/plugins/sched/gang/gang.h
@@ -0,0 +1,50 @@
+/*****************************************************************************\
+ * gang.h - Gang scheduler definitions
+ *****************************************************************************
+ * Copyright (C) 2006 The Regents of the University of California.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Morris Jette <jette1@llnl.gov>
+ * UCRL-CODE-217948.
+ *
+ * This file is part of SLURM, a resource management program.
+ * For details, see <http://www.llnl.gov/linux/slurm/>.
+ *
+ * SLURM is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * In addition, as a special exception, the copyright holders give permission
+ * to link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two. You must obey the GNU
+ * General Public License in all respects for all of the code used other than
+ * OpenSSL. If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not obligated to do
+ * so. If you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files in
+ * the program, then also delete it here.
+ *
+ * SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with SLURM; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+\*****************************************************************************/
+
+#ifndef __SCHED_GANG_H
+#define __SCHED_GANG_H
+
+#include <stdio.h>
+#include <slurm/slurm_errno.h>
+
+#include "src/common/plugin.h"
+#include "src/common/log.h"
+
+extern int spawn_gang_thread(void);
+extern void term_gang_thread(void);
+
+#endif
diff --git a/src/plugins/sched/gang/sched_gang.c b/src/plugins/sched/gang/sched_gang.c
new file mode 100644
index 00000000000..0a50969f209
--- /dev/null
+++ b/src/plugins/sched/gang/sched_gang.c
@@ -0,0 +1,108 @@
+/*****************************************************************************\
+ * sched_gang.c - Gang scheduler plugin functions.
+ *****************************************************************************
+ * Copyright (C) 2006 The Regents of the University of California.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Morris Jette <jette1@llnl.gov>
+ * UCRL-CODE-217948.
+ *
+ * This file is part of SLURM, a resource management program.
+ * For details, see <http://www.llnl.gov/linux/slurm/>.
+ *
+ * SLURM is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * In addition, as a special exception, the copyright holders give permission
+ * to link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two. You must obey the GNU
+ * General Public License in all respects for all of the code used other than
+ * OpenSSL. If you modify file(s) with this exception, you may extend this
+ * exception to your version of the file(s), but you are not obligated to do
+ * so. If you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files in
+ * the program, then also delete it here.
+ *
+ * SLURM is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with SLURM; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+\*****************************************************************************/
+
+#include "./gang.h"
+
+const char plugin_name[] = "Gang Scheduler plugin";
+const char plugin_type[] = "sched/gang";
+const uint32_t plugin_version = 90;
+
+/* A plugin-global errno. */
+static int plugin_errno = SLURM_SUCCESS;
+
+/**************************************************************************/
+/* TAG( init ) */
+/**************************************************************************/
+extern int init( void )
+{
+ verbose( "gang scheduler plugin loaded" );
+ return spawn_gang_thread();
+}
+
+/**************************************************************************/
+/* TAG( fini ) */
+/**************************************************************************/
+extern void fini( void )
+{
+ term_gang_thread();
+}
+
+
+/***************************************************************************/
+/* TAG( slurm_sched_plugin_schedule ) */
+/***************************************************************************/
+extern int slurm_sched_plugin_schedule( void )
+{
+ return SLURM_SUCCESS;
+}
+
+
+/**************************************************************************/
+/* TAG( slurm_sched_plugin_initial_priority ) */
+/**************************************************************************/
+extern uint32_t slurm_sched_plugin_initial_priority( uint32_t last_prio )
+{
+ if (last_prio >= 2)
+ return (last_prio - 1);
+ else
+ return 1;
+}
+
+/**************************************************************************/
+/* TAG( slurm_sched_plugin_job_is_pending ) */
+/**************************************************************************/
+void slurm_sched_plugin_job_is_pending( void )
+{
+ /* No action required */
+}
+
+/**************************************************************************/
+/* TAG( slurm_sched_get_errno ) */
+/**************************************************************************/
+int slurm_sched_get_errno( void )
+{
+ return plugin_errno;
+}
+
+/**************************************************************************/
+/* TAG( slurm_sched_strerror ) */
+/**************************************************************************/
+char *slurm_sched_strerror( int errnum )
+{
+ return NULL;
+}
+
--
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