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added limit to the number of parallel pipelines #560

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added limit to the number of parallel pipelines #560

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6 changes: 6 additions & 0 deletions compiler/config.py
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Original file line number Diff line number Diff line change
Expand Up @@ -127,6 +127,10 @@ def add_common_arguments(parser):
help="Run multiple pipelines in parallel if they are safe to run",
action="store_true",
default=False)
parser.add_argument("--parallel_pipelines_limit",
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type=int,
help="Configure the limit for the number of parallel pipelines at one time (default: cpu count, 0 is turns parallel pipelines off)",
default=os.cpu_count())
parser.add_argument("--r_split",
help="(experimental) use round robin split, merge, wrap, and unwrap",
action="store_true")
Expand Down Expand Up @@ -197,6 +201,8 @@ def pass_common_arguments(pash_arguments):
arguments.append(string_to_argument("--distributed_exec"))
if (pash_arguments.parallel_pipelines):
arguments.append(string_to_argument("--parallel_pipelines"))
arguments.append(string_to_argument("--parallel_pipelines_limit"))
arguments.append(string_to_argument(str(pash_arguments.parallel_pipelines_limit)))
if (pash_arguments.daemon_communicates_through_unix_pipes):
arguments.append(string_to_argument("--daemon_communicates_through_unix_pipes"))
arguments.append(string_to_argument("--r_split_batch_size"))
Expand Down
11 changes: 8 additions & 3 deletions compiler/pash_runtime_daemon.py
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Original file line number Diff line number Diff line change
Expand Up @@ -327,6 +327,7 @@ def compile_and_add(self, compiled_script_file, var_file, input_ir_file):
self.wait_for_all()

if compile_success:
self.wait_for_limit(config.pash_args.parallel_pipelines_limit)
response = success_response(
f'{process_id} {compiled_script_file} {var_file} {input_ir_file}')
else:
Expand Down Expand Up @@ -357,16 +358,20 @@ def get_next_id(self):
self.next_id += 1
return self.next_id

def wait_for_all(self):
log("Waiting for all processes to finish. There are", self.running_procs, "processes remaining.")
while self.running_procs > 0:
def wait_for_limit(self, limit):
log("Waiting for for number of processes to be less than limit")
while self.running_procs > limit:
input_cmd = self.get_input()
# must be exit command or something is wrong
if (input_cmd.startswith("Exit:")):
self.handle_exit(input_cmd)
else:
raise Exception(
f"Command should be exit but it was {input_cmd}")

def wait_for_all(self):
log("Waiting for all processes to finish. There are", self.running_procs, "processes remaining.")
self.wait_for_limit(0)
self.unsafe_running = False

def handle_exit(self, input_cmd):
Expand Down