Installing Science Pipeline for LSST@Europe conf. tuturials, issue with

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#1

Hi everyone,

I’m getting ready for the LSST@Europe2 tutorials in Belgrade next week, but am encountering a permissions problem when trying to set up the science-pipeline stack inside Conda.

Specifically, I have installed Miniconda (Python 2.7) and am working through the setup commands listed in Section 2 on page https://pipelines.lsst.io/install/conda.html. However, having run:

% conda config --add channels http://conda.lsst.codes/stack

—apparently successfully, I encounter an error with the subsequent command:

% conda create --name lsst python=2
Fetching package metadata …Error: HTTPError: 403 Client Error: Forbidden for url: http://conda.lsst.codes/stack/win-64/repodata.json.bz2: http://conda.lsst.codes/stack/win-64/

I’ve tried the install on both a Xubuntu and a Windows 8 machine with exactly the same result.

Any advice as to what I am doing wrong would be much appreciated!

Thanks in advance,
George.

#2

Could you post the.condarc from the xubuntu machine? It is really strange that it thinks it’s arch is win-64.

#3

Sorry, the error I logged in my previous post was from the Windows 8 attempt. I simply meant that I had also tried from a Xubuntu (32-bit) installation and got the same ‘Forbidden URL …’ error.

Thanks,
George.

#4

For completeness, on Xubuntu I get:

$ conda create --name lsst python=2Fetching package metadata …Error: HTTPError: 403 Client Error: Forbidden for url: http://conda.lsst.codes/stack/linux-32/repodata.json.bz2: http://conda.lsst.codes/stack/linux-32/

#5

Unfortunately, we don’t support 32-bit architectures any more. (This means my desktop doesn’t run the stack…)

#6

Hi K-T,

Thanks. This seems to explain why I can’t install the software stack on my 32-bit Ubuntu image, though should I be able to install on my 64-bit Windows laptop?

Thanks again,
George.

#7

I’m afraid not; this thread discusses the closest anyone has gotten to running the stack on Windows, and even with a new embedded Linux feature in a prerelease version of Windows 10, it doesn’t quite work.

If you can create a 64-bit Ubuntu image, that should work fine (though I’d recommend 14.04 rather than the latest Ubuntu LTS release, just because we’ve had more people try that out).

#8

Hi Jim,

Okay, thanks. I’ll see if I can get a 64-bit Ubuntu VM, though might stress the hotel Wi-Fi!

I’ll let you know how I get on,
George.

#9

One more note on this: the stack can require a fair amount of memory to build (we’d very much like to reduce this, but we’re not there yet), so it’d definitely be a good idea to use a binary install (either Conda or CernVM FS) if your VM is limited in that regard (obviously, that’ll be faster too).

#10

Hi Jim (and everyone),

Thanks. I successfully deployed the pipeline software on a 64-bit Linux system and ran the tutorials.

Thanks for your help,
George.