Finding existing embedding data


Embedding data were produced for each embedding request in the STAR Simulations Request page.
Normaly, they will be stored in PDSF/RCF NFS disks for a while for end users to do their analysis.
However, NFS disk space is limited, and we have new requests constantly, the data will be finally moved
from disks to HPSS for permanent storage on tape, but they can be restaged to disk for analysis later.

In order to find the existing embedding either on disks or in HPSS. Please follow the procedures below:

1) Find the request ID of a particular request that you are interested in, in the STAR Simulations Request page.
    You can use the "Search" box at the top right of this page.

2) For the requests before 2016 (ID# < 2016xxxx), look for the samples at RCF first.
    First, look at the list of embedding samples produced at RCF maintained by Lidia. If you can find the 
    data in this list, then logon to RCF, look for '/star/data18' to see whether the following directories exist:

    /star/data18/embedding/${Trigger set name}/${Embeded Particle}_${fSet}_${RequestID}/

    If it exists, you can further check whether all the ${fSet} from 'fSet min' to 'fSet max' are there. If all exist, 
    you can start to use it. If none of them are there or only some fraction of 'fSet' are there, write to the embedding list
    and ask the Emebedding Coordinator to restage it to there from HPSS.

3) If the samples that you are looking for is not in Lidia's list. They must be in PDSF, which is our major site for
    embedding production now. At PDSF, all the samples on disk are stored at:
     /projecta/projectdirs/starprod/embedding/${Trigger set name}/${Embeded Particle}_${fSet}_${RequestID}/

    You can logon to PDSF, and look around these directories first to see whether the data are there. Or, you can explore
    the structure of "/projecta/projectdirs/starprod/embedding/" directory in a nice weblist, maintained by Jochen Thaeder.
    If you can not find the embedding data in this directory, the data must be in PDSF HPSS. Unfortunately, there is not
    a list of data stored in PDSF HPSS yet. Please write to the embedding list, provide the request ID, Particle Name, file type
    (minimc.root or event.root), and ask the Embedding Coordinator to restage the data to disk for you.