#!/usr/bin/env python
+# Copyright (C) The Arvados Authors. All rights reserved.
+#
+# SPDX-License-Identifier: AGPL-3.0
from __future__ import absolute_import, print_function
import logging
+import re
import subprocess
+import arvados.util
+
from . import clientactor
from .config import ARVADOS_ERRORS
+
class ServerCalculator(object):
"""Generate cloud server wishlists from an Arvados job queue.
that would best satisfy the jobs, choosing the cheapest size that
satisfies each job, and ignoring jobs that can't be satisfied.
"""
+ class InvalidCloudSize(object):
+ """
+ Dummy CloudSizeWrapper-like class, to be used when a cloud node doesn't
+ have a recognizable arvados_node_size tag.
+ """
+ def __init__(self):
+ self.id = 'invalid'
+ self.name = 'invalid'
+ self.ram = 0
+ self.disk = 0
+ self.scratch = 0
+ self.cores = 0
+ self.bandwidth = 0
+ self.price = 9999999
+ self.preemptible = False
+ self.extra = {}
+
+ def meets_constraints(self, **kwargs):
+ return False
+
class CloudSizeWrapper(object):
- def __init__(self, real_size, **kwargs):
+ def __init__(self, real_size, node_mem_scaling, **kwargs):
self.real = real_size
for name in ['id', 'name', 'ram', 'disk', 'bandwidth', 'price',
'extra']:
setattr(self, name, getattr(self.real, name))
self.cores = kwargs.pop('cores')
- self.scratch = self.disk
+ # libcloud disk sizes are in GB, Arvados/SLURM are in MB
+ # multiply by 1000 instead of 1024 to err on low side
+ if self.disk is None:
+ self.disk = 0
+ self.scratch = self.disk * 1000
+ self.ram = int(self.ram * node_mem_scaling)
+ self.preemptible = False
for name, override in kwargs.iteritems():
+ if name == 'instance_type': continue
if not hasattr(self, name):
raise ValueError("unrecognized size field '%s'" % (name,))
setattr(self, name, override)
return True
- def __init__(self, server_list, max_nodes=None, max_price=None):
- self.cloud_sizes = [self.CloudSizeWrapper(s, **kws)
+ def __init__(self, server_list, max_nodes=None, max_price=None,
+ node_mem_scaling=0.95):
+ self.cloud_sizes = [self.CloudSizeWrapper(s, node_mem_scaling, **kws)
for s, kws in server_list]
self.cloud_sizes.sort(key=lambda s: s.price)
self.max_nodes = max_nodes or float('inf')
self.max_price = max_price or float('inf')
self.logger = logging.getLogger('arvnodeman.jobqueue')
- self.logged_jobs = set()
+
+ self.logger.info("Using cloud node sizes:")
+ for s in self.cloud_sizes:
+ self.logger.info(str(s.__dict__))
@staticmethod
def coerce_int(x, fallback):
return fallback
def cloud_size_for_constraints(self, constraints):
+ specified_size = constraints.get('instance_type')
want_value = lambda key: self.coerce_int(constraints.get(key), 0)
wants = {'cores': want_value('min_cores_per_node'),
'ram': want_value('min_ram_mb_per_node'),
'scratch': want_value('min_scratch_mb_per_node')}
+ # EC2 node sizes are identified by id. GCE sizes are identified by name.
for size in self.cloud_sizes:
- if size.meets_constraints(**wants):
- return size
+ if (size.meets_constraints(**wants) and
+ (specified_size is None or
+ size.id == specified_size or size.name == specified_size)):
+ return size
return None
def servers_for_queue(self, queue):
servers = []
- seen_jobs = set()
+ unsatisfiable_jobs = {}
for job in queue:
- seen_jobs.add(job['uuid'])
constraints = job['runtime_constraints']
want_count = max(1, self.coerce_int(constraints.get('min_nodes'), 1))
cloud_size = self.cloud_size_for_constraints(constraints)
if cloud_size is None:
- if job['uuid'] not in self.logged_jobs:
- self.logged_jobs.add(job['uuid'])
- self.logger.debug("job %s not satisfiable", job['uuid'])
- elif (want_count <= self.max_nodes) and (want_count*cloud_size.price <= self.max_price):
- servers.extend([cloud_size.real] * want_count)
- self.logged_jobs.intersection_update(seen_jobs)
- return servers
+ unsatisfiable_jobs[job['uuid']] = (
+ "Constraints cannot be satisfied by any node type")
+ elif (want_count > self.max_nodes):
+ unsatisfiable_jobs[job['uuid']] = (
+ "Job's min_nodes constraint is greater than the configured "
+ "max_nodes (%d)" % self.max_nodes)
+ elif (want_count*cloud_size.price <= self.max_price):
+ servers.extend([cloud_size] * want_count)
+ else:
+ unsatisfiable_jobs[job['uuid']] = (
+ "Job's price (%d) is above system's max_price "
+ "limit (%d)" % (want_count*cloud_size.price, self.max_price))
+ return (servers, unsatisfiable_jobs)
def cheapest_size(self):
return self.cloud_sizes[0]
for s in self.cloud_sizes:
if s.id == sizeid:
return s
- return None
+ return self.InvalidCloudSize()
+
class JobQueueMonitorActor(clientactor.RemotePollLoopActor):
"""Actor to generate server wishlists from the job queue.
CLIENT_ERRORS = ARVADOS_ERRORS
- def __init__(self, client, timer_actor, server_calc, *args, **kwargs):
+ def __init__(self, client, timer_actor, server_calc,
+ jobs_queue, slurm_queue, *args, **kwargs):
super(JobQueueMonitorActor, self).__init__(
client, timer_actor, *args, **kwargs)
+ self.jobs_queue = jobs_queue
+ self.slurm_queue = slurm_queue
self._calculator = server_calc
+ @staticmethod
+ def coerce_to_mb(x):
+ v, u = x[:-1], x[-1]
+ if u in ("M", "m"):
+ return int(v)
+ elif u in ("G", "g"):
+ return float(v) * 2**10
+ elif u in ("T", "t"):
+ return float(v) * 2**20
+ elif u in ("P", "p"):
+ return float(v) * 2**30
+ else:
+ return int(x)
+
def _send_request(self):
- # cpus, memory, tempory disk space, reason, job name
- squeue_out = subprocess.check_output(["squeue", "--state=PENDING", "--noheader", "--format=%c %m %d %r %j"])
queuelist = []
- for out in squeue_out.splitlines():
- cpu, ram, disk, reason, jobname = out.split(" ", 4)
- if reason == "Resources":
- queuelist.append({
- "uuid": jobname,
- "runtime_constraints": {
- "min_cores_per_node": cpu,
- "min_ram_mb_per_node": ram,
- "min_scratch_mb_per_node": disk
- }
- })
-
- queuelist.extend(self._client.jobs().queue().execute()['items'])
+ if self.slurm_queue:
+ # cpus, memory, tempory disk space, reason, job name, feature constraints, priority
+ squeue_out = subprocess.check_output(["squeue", "--state=PENDING", "--noheader", "--format=%c|%m|%d|%r|%j|%f|%Q"])
+ for out in squeue_out.splitlines():
+ try:
+ cpu, ram, disk, reason, jobname, features, priority = out.split("|", 6)
+ except ValueError:
+ self._logger.warning("ignored malformed line in squeue output: %r", out)
+ continue
+ if '-dz642-' not in jobname:
+ continue
+ if not re.search(r'BadConstraints|ReqNodeNotAvail|Resources|Priority', reason):
+ continue
+
+ for feature in features.split(','):
+ m = re.match(r'instancetype=(.*)', feature)
+ if not m:
+ continue
+ instance_type = m.group(1)
+ # Ignore cpu/ram/scratch requirements, bring up
+ # the requested node type.
+ queuelist.append({
+ "uuid": jobname,
+ "runtime_constraints": {
+ "instance_type": instance_type,
+ },
+ "priority": int(priority)
+ })
+ break
+ else:
+ # No instance type specified. Choose a node type
+ # to suit cpu/ram/scratch requirements.
+ queuelist.append({
+ "uuid": jobname,
+ "runtime_constraints": {
+ "min_cores_per_node": cpu,
+ "min_ram_mb_per_node": self.coerce_to_mb(ram),
+ "min_scratch_mb_per_node": self.coerce_to_mb(disk)
+ },
+ "priority": int(priority)
+ })
+ queuelist.sort(key=lambda x: x.get('priority', 1), reverse=True)
+
+ if self.jobs_queue:
+ queuelist.extend(self._client.jobs().queue().execute()['items'])
return queuelist
def _got_response(self, queue):
- server_list = self._calculator.servers_for_queue(queue)
+ server_list, unsatisfiable_jobs = self._calculator.servers_for_queue(queue)
+ # Cancel any job/container with unsatisfiable requirements, emitting
+ # a log explaining why.
+ for job_uuid, reason in unsatisfiable_jobs.iteritems():
+ try:
+ self._client.logs().create(body={
+ 'object_uuid': job_uuid,
+ 'event_type': 'stderr',
+ 'properties': {'text': reason},
+ }).execute()
+ # Cancel the job depending on its type
+ if arvados.util.container_uuid_pattern.match(job_uuid):
+ subprocess.check_call(['scancel', '--name='+job_uuid])
+ elif arvados.util.job_uuid_pattern.match(job_uuid):
+ self._client.jobs().cancel(uuid=job_uuid).execute()
+ else:
+ raise Exception('Unknown job type')
+ self._logger.debug("Cancelled unsatisfiable job '%s'", job_uuid)
+ except Exception as error:
+ self._logger.error("Trying to cancel job '%s': %s",
+ job_uuid,
+ error)
self._logger.debug("Calculated wishlist: %s",
- ', '.join(s.name for s in server_list) or "(empty)")
+ ', '.join(s.id for s in server_list) or "(empty)")
return super(JobQueueMonitorActor, self)._got_response(server_list)
projects / arvados.git / blobdiff