geoschem / geos-chem-cloud

Run GEOS-Chem easily on AWS cloud
http://cloud.geos-chem.org
MIT License
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[BUG/ISSUE] Caveat when requesting spot instances #36

Open yantosca opened 4 years ago

yantosca commented 4 years ago

@JiaweiZhuang and I have noted an intermittent error that can happen when trying to request spot instances for the c5 instance type. The requested spot instances would be denied with the "bad parameters" error:

cloud1

In this case, this error occurs because the default subnet field (red box below) must be defaulting to a region (us-east-1e) that does not have any c5 nodes. As you can see, spot prices are quoted for all regions except us-east-1e, which means that there are no nodes of this instance type.

cloud3

The solution is simple. Manually select a subnet value for one of the regions for which a spot price is listed (e.g. us-east-1a):

cloud2

This should cause your spot request to be fulfilled succesfully.

yantosca commented 4 years ago

Also note: we will update the http://cloud.geos-chem.org documentation as time allows, to account for this new information.