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support for adding spot nodes during load balancing #534

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support for adding spot nodes during load balancing #534

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3151090
enable use of spot instances for loadbalancing with -b/--spot_bid opt…
vasisht Jun 5, 2015
8801f59
spaces vs tabs
vasisht Jun 5, 2015
f55fd4d
pep8 fixes to loadbalancer
vasisht Jun 5, 2015
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6 changes: 4 additions & 2 deletions starcluster/balancers/sge/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -418,7 +418,8 @@ class SGELoadBalancer(LoadBalancer):
def __init__(self, interval=60, max_nodes=None, wait_time=900,
add_pi=1, kill_after=45, stab=180, lookback_win=3,
min_nodes=None, kill_cluster=False, plot_stats=False,
plot_output_dir=None, dump_stats=False, stats_file=None):
plot_output_dir=None, dump_stats=False, stats_file=None,
spot_bid=None):
self._cluster = None
self._keep_polling = True
self._visualizer = None
Expand All @@ -437,6 +438,7 @@ def __init__(self, interval=60, max_nodes=None, wait_time=900,
self.stats_file = stats_file
self.plot_stats = plot_stats
self.plot_output_dir = plot_output_dir
self.spot_bit = spot_bid
if plot_stats:
assert self.visualizer is not None

Expand Down Expand Up @@ -724,7 +726,7 @@ def _eval_add_node(self):
log.warn("Adding %d nodes at %s" %
(need_to_add, str(utils.get_utc_now())))
try:
self._cluster.add_nodes(need_to_add)
self._cluster.add_nodes(need_to_add, spot_bid=self.spot_bid)
self.__last_cluster_mod_time = utils.get_utc_now()
log.info("Done adding nodes at %s" %
str(self.__last_cluster_mod_time))
Expand Down
4 changes: 4 additions & 0 deletions starcluster/commands/loadbalance.py
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Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,10 @@ def addopts(self, parser):
parser.add_option("-K", "--kill-cluster", dest="kill_cluster",
action="store_true", default=False,
help="Terminate the cluster when the queue is empty")
parser.add_option("-b", "--bid", dest="spot_bid",
action="callback", type="float", default=None,
callback=self._positive_int,
help="max bid for spot nodes, not used by default")

def execute(self, args):
if not self.cfg.globals.enable_experimental:
Expand Down