#!/usr/bin/env expect
############################################################################
# Purpose: Test of Slurm functionality
#          Confirm that node sharing flags are respected  (--nodelist and
#          --oversubscribe options).
#
# Output:  "TEST: #.#" followed by "SUCCESS" if test was successful, OR
#          "WARNING: ..." with an explanation of why the test can't be made, OR
#          "FAILURE: ..." otherwise with an explanation of the failure, OR
#          anything else indicates a failure mode that must be investigated.
############################################################################
# Copyright (C) 2002-2006 The Regents of the University of California.
# Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
# Written by Morris Jette <jette1@llnl.gov>
# CODE-OCEC-09-009. All rights reserved.
#
# This file is part of Slurm, a resource management program.
# For details, see <https://slurm.schedmd.com/>.
# Please also read the included file: DISCLAIMER.
#
# 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.
#
# 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.
############################################################################
source ./globals

set test_id      "17.17"
set exit_code    0
set file_err     "test$test_id.error"
set file_in      "test$test_id.input"
set file_out     "test$test_id.output"
set job_id1      0
set job_id2      0
set nodelist_name ""
set hostname     ""
set gpu_tot      0
set job_tres_cnt 0

print_header $test_id

set timeout $max_job_delay

if {![get_node_config 2]} {
	log_warn "This test requires 2 or more GPUs in a node of the default partition. Skipping.\n"
	exit $exit_code
}

#
# Submit a job and get the node's NodeName from the nodelist
#
set timeout $max_job_delay
set srun_pid [spawn $srun -v -N1 -l -t1 $bin_printenv SLURMD_NODENAME]
expect {
	-re "on host ($alpha_numeric_under)," {
		set nodelist_name $expect_out(1,string)
		exp_continue
	}
	timeout {
		send_user "\nFAILURE: srun not responding\n"
		slow_kill $srun_pid
		set exit_code 1
	}
	eof {
		wait
	}
}
if {[string compare $nodelist_name ""] == 0} {
	send_user "\nFAILURE: Did not get hostname of task 0\n"
	exit 1
}
if {[test_front_end] != 0} {
	send_user "\nWARNING: Additional testing is incompatible with front-end systems\n"
	exit $exit_code
}

#
# Delete left-over input script
# Build input script file
#
exec $bin_rm -f $file_in
make_bash_script $file_in "$srun $bin_sleep 5"

#
# Submit two jobs to the same node, one with no sharing, the other
# with sharing permitted. Ensure the first job completes before the
# second job is started.
#
set sbatch_pid [spawn $sbatch -N1 --exclusive --nodelist=$nodelist_name -t1 --output=$file_out --error=$file_err  $file_in]
expect {
	-re "Submitted batch job ($number)" {
		set job_id1 $expect_out(1,string)
		exp_continue
	}
	timeout {
		send_user "\nFAILURE: sbatch not responding\n"
		slow_kill $sbatch_pid
		exit 1
	}
	eof {
		wait
	}
}
if {$job_id1 == 0} {
	send_user "\nFAILURE: sbatch failed to report jobid\n"
	exit 1
}

set partition "dummy"
set waited 1
set timeout [expr $max_job_delay + 5]
set srun_pid [spawn $srun -N1 --nodelist=$nodelist_name -t1 --oversubscribe $scontrol -o show job $job_id1]
expect {
	-re "JobState=RUN" {
		set waited 0
		exp_continue
	}
	-re "Partition=($alpha_numeric_under)" {
		set partition $expect_out(1,string)
		exp_continue
	}
	timeout {
		send_user "\nFAILURE: srun not responding\n"
		slow_kill $srun_pid
		cancel_job $job_id1
		exit 1
	}
	eof {
		wait
	}
}
if {$waited == 0} {
	spawn $scontrol show partition
	expect {
		-re "OverSubscribe=FORCE" {
			send_user "\nWARNING: Test incompatible with OverSubscribe=FORCE\n"
			set waited 1
			exp_continue
		}
		eof {
			wait
		}
	}
}
if {$waited == 0} {
	send_user "\nFAILURE: srun failed to wait for non-sharing job to complete\n"
	set exit_code 1
}

#
# Verify that all GPUs are allocated with the --exclusive flag
#
set sbatch_pid2 [spawn $sbatch -t1 -N1 -w $hostname --gres=gpu --exclusive --output=$file_out $file_in]
expect {
	-re "Submitted batch job ($number)" {
		set job_id2 $expect_out(1,string)
		exp_continue
	}
	timeout {
		log_error "sbatch not responding\n"
		set exit_code 1
	}
	eof {
		wait
	}
}
if {$job_id2 == 0} {
	log_error "sbatch failed to report jobid\n"
	set exit_code 1
}

if {[wait_for_job $job_id2 "RUNNING"] != 0} {
	log_error "waiting for job to start running\n"
	set exit_code 1
}

set job_gpu_cnt [get_job_gpu_cnt $job_id2]

if {$gpu_tot != $job_gpu_cnt} {
	log_error "Job didn't allocate all GPUs ($gpu_tot != $job_gpu_cnt)"
	set exit_code 1
} else {
	log_info "Node GPU count matches Job GPU count ($gpu_tot == $job_gpu_cnt)"
}

if {[wait_for_job $job_id2 "DONE"] != 0} {
	log_error "job wasn't able to complete\n"
	cancel_job $job_id2
	set exit_code 1
}

cancel_job $job_id1
if {$exit_code == 0} {
	exec $bin_rm -f $file_err $file_in $file_out
	send_user "\nSUCCESS\n"
}
exit $exit_code