Error of "map all requested links to physical resources"

Yueying Li

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Jan 31, 2022, 4:49:10 PM1/31/22

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Hi Sir / Madam,

I started 3 nodes after checking that all resources are available. Could you help shed some light on this error? Any pointers would be appreciated!

Could not map all requested links to physical resources. Not enough free resources currently. Please try again later. Nodes: client_0 clnode224 client_1 clnode226 server clnode181 lan/lan h-itc-cf33-d5048-022 End Nodes Edges: linklan/lan/server:0 Mapping Failed linklan/lan/client_0:0 direct link-clnode224:eth1-h-itc-cf33-d5048-022:1/1 (clnode224/eth1,h-itc-cf33-d5048-022/1/1) link-clnode224:eth1-h-itc-cf33-d5048-022:1/1 (clnode224/eth1,h-itc-cf33-d5048-022/1/1) linklan/lan/client_1:0 direct link-clnode226:eth1-h-itc-cf33-d5048-022:1/4 (clnode226/eth1,h-itc-cf33-d5048-022/1/4) link-clnode226:eth1-h-itc-cf33-d5048-022:1/4 (clnode226/eth1,h-itc-cf33-d5048-022/1/4) End Edges

Regards,

Lisa

Leigh Stoller

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Jan 31, 2022, 4:51:10 PM1/31/22

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> I started 3 nodes after checking that all resources are available. Could you help shed some light on this error? Any pointers would be appreciated!
>
> Could not map all requested links to physical resources. Not enough free resources currently. Please try again later.

Hi. The best way to approach a problem like this to send us the link
to the status page of your failed experiment. Then we can find all of the
information we need to help you out.

Thanks
Leigh

Yueying Li

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Jan 31, 2022, 5:06:55 PM1/31/22

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Thank you for your quick response. Please check the page attached!

https://www.cloudlab.us/status.php?uuid=b6144bfb-82d1-11ec-b318-e4434b2381fc

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Leigh Stoller

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Jan 31, 2022, 5:16:51 PM1/31/22

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> Thank you for your quick response. Please check the page attached!
>
> https://www.cloudlab.us/status.php?uuid=b6144bfb-82d1-11ec-b318-e4434b2381fc

Hi. I see that you have specified “no interswitch links” in your profile.
And c6420 nodes (which you have a reservation for). The problem is that
the few remaining free c6420 nodes are scattered across multiple switches,
so the mapper cannot satisfy the no inter switch links constraint.

For a small number of nodes we can probably arrange something, but it
will mean waiting for nodes to free up from other experiments until
there are enough.

Leigh

Yueying Li

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Feb 3, 2022, 3:31:34 PM2/3/22

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Hi Leigh,

Thank you so much for your info! (Sorry for the tardiness)

That would be great. I was wondering if it would be possible to arrange something, please let me know.

Thanks,

Lisa

Leigh Stoller

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Feb 3, 2022, 3:54:07 PM2/3/22

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> Hi Leigh,
>
> Thank you so much for your info! (Sorry for the tardiness)
>
> That would be great. I was wondering if it would be possible to arrange something, please let me know.

Hi, it depends on how many nodes you need, please let me know.

Thanks
Leigh

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