RCE FAQs

Missing software packages in Anaconda Navigator

Launching Anaconda Navigator should present several pre-installed software packages, including Jupyter Notebook, Jupyter Lab, qtconsole, and Spyder.

If you do not see all of the expected applications on the Anaconda Navigator "Home" screen, you may need to update your package index, as follows:

  • Launch Anaconda Navigator.
  • Select "Environments" from the left menu.
  • Click the "Update Index..." button.
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How do I cite the RCE?

If you found the RCE useful in completing your published research, we would appreciate if you would mention us in a citation, using the following text:

"The computations for this paper were run on the Research Computing Environment supported by the Institute for Quantitative Social Science in the Faculty of Arts and Sciences at Harvard University."

How to remove a frozen RCE application

1) In nx, open a terminal from the Applications->System tools menu

2) Note the host your are on:  [cperry@rce6-5 ~]$ 

3) Run the command below and note the Schedd host and job ID. 

[cperry@rce6-5 ~]$ condor_q cperry

-- Schedd: HMDC.rce@rce6-1.hmdc.harvard.edu : <10.0.0.98:9619?sock=10410_9383_3>

 ID      OWNER            SUBMITTED     RUN_TIME ST PRI SIZE CMD               

...

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Using Stata at 100% quota results in data loss

We uncovered a Stata bug where the application will overwrite output with zero byte content when you reach maximum quota. Please be aware of your quota status and expected output size before running a Stata job. HMDC has submitted a bug report to Stata and their developers are working on a fix.

How can I access the old CVS repository

HMDC houses a legacy CVS repository, we no longer create new CVS project repos, but old repos can be accessed using the following information:

First, find out which shell you work in, from a terminal prompt type the following:

echo $SHELL

If you see tcsh, type the following:

setenv CVS_RSH ssh

Otherwise type:

export CVS_RSH=ssh

Then type the following to checkout your repo to your current directory:

cvs -d <username>@...

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Why do I get the java error "Could not reserve enough space for object heap"?

When running an RCE Powered Application -- for example an RCE Shell -- you have the opportunity to reserve a requested amount of system memory.

The Java JRE is not aware of the resource limit you have set, and will try (and fail) to grab as much of the system memory as is free. (Java bug 8043516)

This will typically result in one of the following errors:

"Could...

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