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#!/usr/bin/env python3
import argparse, builtins, os, sys, yaml, socket
def parse_args():
parser = argparse.ArgumentParser(description="libfabric multinode test with slurm")
parser.add_argument('--dry-run', action='store_true', help='Perform a dry run without making any changes.')
parser.add_argument("--ci", type=str, help="Commands to prepend to test call. Only used with the internal launcher option", default="")
parser.add_argument("-x", "--capability", type=str, help="libfabric capability", default="msg")
parser.add_argument("-i", "--iterations", type=int , help="Number of iterations", default=1)
parser.add_argument("-l", "--launcher", type=str, choices=['internal', 'srun', 'mpirun'], help="launcher to use for running job. If nothing is specified, test manages processes internally. Available options: internal, srun and mpirun", default="internal")
required = parser.add_argument_group("Required arguments")
required.add_argument("-p", "--provider", type=str, help="libfabric provider")
required.add_argument("-np", "--num-procs", type=int, help="Map process by node, l3cache, etc")
required.add_argument("-c", "--config", type=str, help="Test configuration")
srun_required = parser.add_argument_group("Required if using srun")
srun_required.add_argument("-t", "--procs-per-node", type=int,
help="Number of procs per node", default=-1)
args = parser.parse_args()
return args, parser
def parse_config(config):
with open(config, "r") as f:
yconf = yaml.load(f, Loader=yaml.FullLoader)
return yconf
def mpi_env(config):
env = config['environment']
result = []
for k in env.keys():
result.append(f"-x {k}")
return " ".join(result)
def set_env(config):
env = config['environment']
for k, v in env.items():
os.environ[k] = str(v)
def mpi_mca_params(config):
try:
mca = config['mca']
result = []
for k, v in env.items():
result.append(f"--mca {k} {v}")
return " ".join(result)
except:
return ""
def mpi_bind_to(config):
try:
return f"--bind-to {config['bind-to']}"
except:
return "--bind-to core"
def mpi_map_by(config):
try:
return f"--map-by ppr:{config['map-by-count']}:{config['map-by']}"
except:
return "--map-by ppr:1:l3"
def execute_cmd(cmd, dry_run):
script_dir = os.path.dirname(os.path.abspath(__file__))
sys.path.append(script_dir)
from command import Command
cmd = Command(cmd, fake=dry_run)
rc, out = cmd.exec_cmd()
return rc, out
def split_on_commas(expr):
l = []
c = o = 0
s = expr
stop = False
while not stop and c != -1 and o != -1:
o = s.find('[')
b = s.find(']')
c = s.find(',')
while c > o and c < b:
c = s.find(',', c+1)
if len(l):
l.pop()
if c < o or c > b:
l += [s[:s.find(',', c)], s[s.find(',', c)+1:]]
s = l[-1]
else:
l += s.split(',')
stop = True
for i in range(0, len(l)):
l[i] = l[i].strip()
return l
def expand_host_list_sub(expr):
host_list = []
# first phase split on the commas first
open_br = expr.find('[')
close_br = expr.find(']', open_br)
if open_br == -1 and close_br == -1:
return expr.split(',')
if open_br == -1 or close_br == -1:
return []
rangestr = expr[open_br+1 : close_br]
node = expr[:open_br]
ranges = rangestr.split(',')
for r in ranges:
cur = r.split('-')
if len(cur) == 2:
pre = "{:0%dd}" % len(cur[0])
for idx in range(int(cur[0]), int(cur[1])+1):
host_list.append(f'{node}{pre.format(idx)}')
elif len(cur) == 1:
pre = "{:0%dd}" % len(cur[0])
host_list.append(f'{node}{pre.format(int(cur[0]))}')
return host_list
def expand_host_list(expr):
l = split_on_commas(expr)
host_list = []
for e in l:
host_list += expand_host_list_sub(e)
return host_list
supported_pm = ['pmi', 'pmi2', 'pmix']
def is_srun_pm_supported():
rc, out = execute_cmd('srun --mpi=list', False)
if rc:
return False
input_list = out.split('\n')
cleaned_list = [entry.strip() for entry in input_list if entry.strip()]
for e in supported_pm:
if e in cleaned_list[1:]:
return True
return False
if __name__ == '__main__':
# list of providers which do not address specification
no_addr_prov = ['cxi']
args, parser = parse_args()
if not args.config:
print("**A configuration file is required")
print(parser.format_help())
exit(-1)
mnode = parse_config(args.config)['multinode']
set_env(mnode)
if args.launcher == 'srun':
if not is_srun_pm_supported():
print(f"**Supported process managers are: {','.join(supported_pm)}")
print(parser.format_help())
exit(-1)
# The script assumes it's already running in a SLURM allocation. It can
# then srun fi_multinode
#
if "pattern" not in mnode:
print("Test pattern must be defined in the YAML configuration file")
exit()
if args.provider in no_addr_prov:
cmd = f"fi_multinode -n {args.num_procs} -s {socket.gethostname()} " \
f"-p {args.provider} -x {args.capability} -z {mnode['pattern']} " \
f"-I {args.iterations} -u {args.launcher.lower()} -T"
else:
cmd = f"fi_multinode -n {args.num_procs} -s {socket.gethostname()} " \
f"-p {args.provider} -x {args.capability} -z '{mnode['pattern']}' " \
f"-I {args.iterations} -u {args.launcher.lower()} -T"
if args.launcher.lower() == 'mpirun':
mpi = f"mpirun {mpi_env(mnode)} {mpi_mca_params(mnode)} {mpi_bind_to(mnode)} "\
f"{mpi_map_by(mnode)} -np {args.num_procs} {cmd}"
elif args.launcher.lower() == 'srun':
if args.procs_per_node == -1 or args.num_procs == -1:
print("**Need to specify --procs-per-node and --num-procs")
print(parser.format_help())
exit()
mpi = f"srun --ntasks-per-node {args.procs_per_node} --ntasks {args.num_procs} "\
f"{cmd}"
elif args.launcher.lower() == 'internal':
if args.procs_per_node == -1:
print("**Need to specify --procs-per-node")
print(parser.format_help())
exit()
hl = ",".join(expand_host_list(os.environ['SLURM_NODELIST']))
mpi = f"runmultinode.sh -h {hl} -n {args.procs_per_node} -p {args.provider} " \
f"-x {args.capability} -I {args.iterations} -z {mnode['pattern']}"
if args.ci:
mpi += f" --ci '{args.ci}'"
else:
print("**Unsupported launcher")
print(parser.format_help())
exit()
rc, out = execute_cmd(mpi, args.dry_run)
print(f"Command completed with {rc}\n{out}")
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