I have a notebook that I've been working with for days and suddenly this morning it is "failing silently" for lack of a better description after one of the cells. When I try and run the plotting cells, it hangs and if I click play again the counter goes back to 1 and it complains about libraries not being imported.
Does anyone have any ideas? I've tried making a copy, reloading the notebook, the kernel, the browser, etc. all to no avail.
Hi Rob,
We recently changed the way we reclaim memory from idle notebooks. It sounds like we might have been a little too aggressive here. Currently, if a notebook is left idle for over an hour, the kernel will be stopped. Our team will look into tweaking the configuration to accommodate longer delays between cell executions.
Ian
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Rob - one aspect of the problem you're having that confuses me is that you said you reloaded the notebook and got errors. That shouldn't be the case. Once your notebook kernel reloads, you should be able to execute again starting on the first cell. Can you provide more details?
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.
@Ian Ok, quick update. It seems to be related to a specific module (scipy.cluster.hierarchy). If I try to display the seaborn clustermap, it borks the whole notebook. If I skip that cell and do the rest of the plots, it works perfectly. It was definitely working all weekend also.
One additional note: this is not a memory or timeout problem as far as I can tell. Research memory is at 15%. I just tried TW's hierarchical risk parity notebook and no go either. Not sure what to make of this, could the library be damaged or something?
Thanks for the update, Rob. I just checked and your notebook server hasn't been affected by the timeout (I see it's been up for ~3 days). It sounds like you're affected by a different platform issue. I'll bring it up to the rest of engineering.
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian.
In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.
