Fix for sameNode functionality of ATS with flux.#170
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Also, I bumped the ats version number to 7.0.122 so I could do a public beta install and test the fix. M ats/atsMachines/fluxScheduled.py |
Call get_physical_nodes during init. Need to call this immediately to cache the hardware nodes before any jobs start running. The logic inspects the 'free' nodes reported by flux, which will change during the run, so inspect it immediately, before starting jobs then save the list of hardware nodes.
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Update to map arbitrary strings in the ats 'same_node" option to an actual physical node at run time.
See the test/HelloSameNode directory for test cases.
Basically, one can specify that independent tests are required to run on the same node, and assign an arbitrary string
to specify the node. If two tests have the same string, they will run on the same node. For example:
t1=test (..., same_node='nodeA')
t2=testif(..., same_node='nodeA')
t3=test (..., same_node='nodeB')
t4=testif(..., same_node='nodeB')
t5=test (..., same_node='nodeC')
t6=testif(..., same_node='nodeC')
test 1 and 2 will run on the same node.
test 3 and 4 will run on the same node
test 5 and 6 will run on the same node
The number of node strings is allowed to be greater than the number of physical nodes. The above would work on a 2 node allocation. The ats flux module will wrap around when assigning the tests to nodes. So nodeA and nodeC would be on the same allocation as well (the first node in the allocation). nodeB would be on the seconde node in the allocation.