search for: ffbatchbytes

...llowing code and am using R version 10.1 on Windows. >library(ff) > read.csv.ffdf(x=NULL,"file.csv",fileEncoding="",nrows=-1,first.rows=NULL,next.rows=NULL,levels=NULL,appendLevels=TRUE,FUN="read.table",transFUN=NULL,asffdf_args=list(),BATCHBYTES=getOption("ffbatchbytes"),VERBOSE=FALSE) Error in read.table.ffdf(FUN = "read.csv", ...) : formal argument "FUN" matched by multiple actual arguments Can anyone help me to fix this error. Thanks in advance. -- View this message in context: http://r.789695.n4.nabble.com/ff-package-when-readin...

...will remember this setting 2) If you use caching="mmnoflush": check the writeback cache configuration of your filesystem (e.g. set data=writeback for ext3, tune limits for dirty pages, consider different filesystem, consider different OS). 3) Choose a reasonable size for options("ffbatchbytes"), which limits the amount of RAM used for one chunk. With too small chunks you pay more performance overhead. Note that bigger chunks are not always better, for example if you distribute chunked processing on many cores or if some operation involved does not scale well with chunk size...

...will remember this setting 2) If you use caching="mmnoflush": check the writeback cache configuration of your filesystem (e.g. set data=writeback for ext3, tune limits for dirty pages, consider different filesystem, consider different OS). 3) Choose a reasonable size for options("ffbatchbytes"), which limits the amount of RAM used for one chunk. With too small chunks you pay more performance overhead. Note that bigger chunks are not always better, for example if you distribute chunked processing on many cores or if some operation involved does not scale well with chunk size...

I'm having trouble getting ffdfindexget to work right in Windows. Even the most trivial of examples gives me problems. > myVec = ff(1:5) > another = ff(10:14) > littleFrame = ffdf(myVec, another) > posVec = ff(c(2, 4), vmode = 'integer') > ffdfindexget(littleFrame, posVec) Error in if (any(B < 1)) stop("B too small") : missing value where TRUE/FALSE

...- sorting big multicolumn-tables is faster in SAS Win64 binaries and version 2.2.1 supporting Sun should appear during the next days on CRAN. For the impatient: checkout from r-forge with revision 67 or higher. Non-Windows users: please note that you need to set appropriate values for options 'ffbatchbytes' and 'ffmaxbytes' yourself. Note that virtual window support is deprecated now because it leads to too complex code. Let us know if you urgently need this and why. Feedback, ideas and contributions appreciated. To those who offered code during the last months: please forgive us that...

...- sorting big multicolumn-tables is faster in SAS Win64 binaries and version 2.2.1 supporting Sun should appear during the next days on CRAN. For the impatient: checkout from r-forge with revision 67 or higher. Non-Windows users: please note that you need to set appropriate values for options 'ffbatchbytes' and 'ffmaxbytes' yourself. Note that virtual window support is deprecated now because it leads to too complex code. Let us know if you urgently need this and why. Feedback, ideas and contributions appreciated. To those who offered code during the last months: please forgive us that...