search for: 2bit

...tebook: sequential reading 1 mio rows: csv = 32.7 ffdf = 1.3 sequential writing 1 mio rows: csv = 35.5 ffdf = 1.5 Examples of things you can do with ff and bit: - direct random access to rows of large data-frame instead of talking to SQL database (?ffdf) - store 4-level factor like A,T,G,C with 2bit instead of 32bit (?vmode) - fast chunked iteration (?chunk) - run linear model on large dataset using biglm (?chunk.ffdf) - handle boolean selections by factor 32 faster and less RAM consuming (?bit) - handle very skewed selections very fast (?bitwhich) - parallel access to large dataset just by se...

...tebook: sequential reading 1 mio rows: csv = 32.7 ffdf = 1.3 sequential writing 1 mio rows: csv = 35.5 ffdf = 1.5 Examples of things you can do with ff and bit: - direct random access to rows of large data-frame instead of talking to SQL database (?ffdf) - store 4-level factor like A,T,G,C with 2bit instead of 32bit (?vmode) - fast chunked iteration (?chunk) - run linear model on large dataset using biglm (?chunk.ffdf) - handle boolean selections by factor 32 faster and less RAM consuming (?bit) - handle very skewed selections very fast (?bitwhich) - parallel access to large dataset just by se...

I'm trying to import a table into R the file is about 700MB. Here's my first try: > DD<-read.table("01uklicsam-20070301.dat",header=TRUE) Error: cannot allocate vector of size 15.6 Mb In addition: Warning messages: 1: In scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, : Reached total allocation of 1535Mb: see help(memory.size) 2: In scan(file, what,

https://bugs.freedesktop.org/show_bug.cgi?id=37922 Summary: NV86: too high power usage. Product: xorg Version: git Platform: Other OS/Version: All Status: NEW Severity: normal Priority: medium Component: Driver/nouveau AssignedTo: nouveau at lists.freedesktop.org ReportedBy: maximlevitsky

Hi all, this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs with a separate new dma_alloc_pages API, which is available on all platforms. In addition to cleaning up the convoluted code path, this ensures that other drivers that have asked for better support for non-coherent DMA to pages with incurring bounce buffering over can finally be properly supported. I'm still a