# Renku session hangs in starting mode

**URL:** <https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643>\
**Category:** RenkuLab\
**Created:** [16 June 2022 13:12 UTC](https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643 "2022-06-16T13:12:29Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bopekno](https://yyz2.discourse-cdn.com/free1/user_avatar/renku.discourse.group/bopekno/32/104_2.png) [@bopekno](https://renku.discourse.group/u/bopekno)\
**Post date:** [16 June 2022 13:12 UTC](https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643/1 "2022-06-16T13:12:29Z")

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Hello,

I cannot get one of my renku projects started on sv-renku, though I recently worked on it. When I launch a session, it hangs in “starting” (yellow circle icon).

Project URL: [https://sv-renku.epfl.ch/projects/pulver/promoter-te-subfamilies-matrix/](https://sv-renku.epfl.ch/projects/pulver/promoter-te-subfamilies-matrix/)

Can you please help me with this ?

Thanks !

Cyril

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**Author:** ![tolevski](https://yyz2.discourse-cdn.com/free1/user_avatar/renku.discourse.group/tolevski/32/137_2.png) [@tolevski](https://renku.discourse.group/u/tolevski)\
**Post date:** [16 June 2022 13:22 UTC](https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643/2 "2022-06-16T13:22:14Z")

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@bopekno this can happen in some cases because there are not enough resources available on the cluster to schedule your session.

If there is a possibility to do so, can you try to restart your session but request less resources (i.e. less CPU and memory)?

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**Author:** ![pameladelgado](https://yyz2.discourse-cdn.com/free1/user_avatar/renku.discourse.group/pameladelgado/32/28_2.png) [@pameladelgado](https://renku.discourse.group/u/pameladelgado)\
**Post date:** [16 June 2022 13:33 UTC](https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643/3 "2022-06-16T13:33:14Z")

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@bopekno indeed your user session can’t start because there are not enough resources available in the cluster.

With the newest Renku version `0.12.14` the user should be able to see a message like this in the logs

```auto
0/0 nodes are available: 0 Insufficient cpu, 0 Insufficient memory, 0 node(s) had taint {hub.jupyter.org/dedicated: user}, that the pod didn't tolerate. 

```

\*where 0 stants for some number.

When you see this you can, as @tolevski mentioned, start a new session with less resources and/or contact your administrator (cc @nbarriere) to see if more resources can be added to the cluster.

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**Author:** ![tolevski](https://yyz2.discourse-cdn.com/free1/user_avatar/renku.discourse.group/tolevski/32/137_2.png) [@tolevski](https://renku.discourse.group/u/tolevski)\
**Post date:** [16 June 2022 13:46 UTC](https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643/4 "2022-06-16T13:46:34Z")

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Actually with the latest renku version (which has not been deployed at [https://sv-renku.epfl.ch/](https://sv-renku.epfl.ch/) yet) the message will appear here:

 ![image](https://global.discourse-cdn.com/free1/uploads/renku/original/1X/5685bd24849b4e0583687adb88e425b57d7227bb.png)

And it should tell you exactly why your session cannot be scheduled.

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<div class="post-metadata">

**Author:** ![pameladelgado](https://yyz2.discourse-cdn.com/free1/user_avatar/renku.discourse.group/pameladelgado/32/28_2.png) [@pameladelgado](https://renku.discourse.group/u/pameladelgado)\
**Post date:** [17 June 2022 05:53 UTC](https://renku.discourse.group/t/renku-session-hangs-in-starting-mode/643/5 "2022-06-17T05:53:24Z")

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> [@tolevski](#):
>
> the latest renku version (which has not been deployed at [https://sv-renku.epfl.ch/](https://sv-renku.epfl.ch/) yet)

just FYI, the SV Renku deployment will be updated to the latest Renku version today.