CMB Data Analysis At NERSC
NERSC provides access to world-class high performance computing facilities through allocations of cycles and storage known as repositories. For the last 20 years the CMB community has shared a common repository for its data analysis work. To sign-up for an account in this repository use the link below right (PI Borrill, repo mp107); please include the experiment(s) you are part of and your supervisor (if appropriate) in the comment field.
For the 2021 allocation year we have been awarded 80M NERSC-hours, to be shared by about 300 CMB data analysts from 13 experiments. Each user in a repository is given access to a fraction of the total allocation. If you exhaust your allowance please contact me about increasing your limit. If you are a member of multiple repositories please be careful to charge each of your jobs to the appropriate one.
Each experiment also has a UNIX filegroup defined for it to allow files to be shared between members of that collaboration.
If you are not in a filegroup that you should be in please contact me.
Several experiments also have their own mission-specific project account (with access restricted to the appropriate members), including dedicated project space on the NERSC project filesytem and an associated "pseudo-user" to own the data there.
Key public CMB data - including the Planck Public Release (PR) and Full Focal Plane (FFP) simulation data - are kept spinning on the NERSC project filesystem for general community use.
A range of massively parallel CMB simulation and analysis tools (including TOAST and several experiment-specific extensions) are available here.
When publishing research that has used these resources please acknowledge NERSC support and send the publication details to me so that I can include them in our annual reports.
CMB Experiments Currently Using NERSC
Useful NERSC Links