Xiaobo.Gu, Shared reading should be fine. Shared writing is also possible, but it is important to understand that .RData files do only contain the meta-data of ff objects, not the ff data itself.
This means you cannot have multiple processes updating the same .RData metadata but you can have multiple processes writing simultaneously to the same ff datafile. (it is your responsibility to avoid conflicts and to make sure you do not suffer problems with delayed cache refreshs as can happen on network drives) HTH Jens Oehlschlägel ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
