Experiment approved but not started

[Adithya Anand]

Hi, this Friday I requested for my experiment to be approved in the Indoor OTA lab before the weekend so I can do some work on it. The experiment has been approved but has not yet started, further I see some discrepancies about the ending time of the experiment I created and the one that has been approved. Is the issue because when created experiment I put Monday October 7th (due to POWDER not allowing to start experiments in the Indoor OTA lab before the next business day) 

The approved and experiment I created share the same start time, it might be hard to read. 

[Kirk Webb]

Hello Adithya,

Unfortunately your scheduled experiment was not lined up with the moved reservation. An important point here is that experiments and reservations are not directly coupled (they are not mapped one-to-one); multiple experiments that use mutually exclusive subsets of the reserved resources can overlap in time, and successive experiments can be instantiated and terminated (scheduled, or on-demand) during the reservation window. So, when we moved the reservation, the scheduled experiment (which I didn't know about) was not also "moved." Note that you can terminate a scheduled experiment at any time prior to when it starts. If your reservation window is active, and you aren't yet using the resources in an experiment, you can instantiate a new experiment right away (on-demand). Finally, note that if you don't start or schedule an experiment to start soon after your reservation opens up, then the system will automatically cancel the reservations for the unused resources.

Regards,

-Kirk

--
You received this message because you are subscribed to the Google Groups "Powder Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to powder-users...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/powder-users/d8ff795f-cad7-431b-8a69-0efad6f8b5a9n%40googlegroups.com.

[Adithya Anand]

So I guess I have to make the experiment again and wait for it to be approved tomorrow morning. 

In the future when I want my experiment approved sooner would I have to provide the experiment and the reservation to make sure they get approved with both coupled together. 

[Kirk Webb]

Yes, you will need a new reservation (which you have submitted, and has been approved).

To be clear: Experiments and reservations are not the same thing. Reservations set aside resources for use in/by experiments. Approval is not required for experiments - only for reservations. There is no direct coupling of experiments to reservations. When you schedule an experiment to start and end later, you can select an existing/approved reservation to line up the time windows. However, after submitting the scheduled experiment instantiation, there is no longer any actual connection to the reservation. When the time arrives for the experiment to start, the testbed attempts to instantiate it, and will make use of your reserved resources at that time, if available.  Recall also that I said you can start an experiment on-demand (i.e., "right now"); you do this by not explicitly filling in the start time. But, note that some resources, such as the radios in the indoor OTA lab, do require that a reservation exist for them at the time the experiment is to run. Please let me know if anything is unclear.

-Kirk

To view this discussion on the web visit https://groups.google.com/d/msgid/powder-users/afc673e1-8878-46cf-ad77-054cbc89417bn%40googlegroups.com.