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Algorithm stuck "Loading Pipeline Data"


My algorithm is stuck loading pipeline data for more than 30 minutes and fails to start. Anyone facing similar issues?

Best regards,

4 responses

Hi Pravin,

I would be happy to assist. If you want me to take a closer look at the issue, please go to your account page ( and click the "Support Permissions" tab. Then, click the "Add Permissions" button and select the item that you want to grant us permission to see. Please send me the item's URL to [email protected] once you've granted the permission.


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Thanks I raised a support ticket.

I saw something similar yesterday (and recall seeing it before), 30-45 minutes prior to market open. Just a hunch, but are there times when the load on the system is particularly high, and backtests would be affected? Are algos being "warmed up" prior to the open? Other loads on the system, such as database updates/queries? Etc.

Having this issue right now actually, thought maybe Quantopian throttled me for using a little too much CPU?