[Rd] Pre-building lazyload DB

From: James MacDonald <jmacdon_at_med.umich.edu>
Date: Wed 09 Feb 2005 - 03:29:08 EST


Hi all,

Bioconductor has several metaData packages that contain quite large data sets. In the past, these data were simply held in the /data directory of the package as .rda files and load()ed as needed. Converting to using lazy data loading may have memory and performance advantages, but for the larger metaData packages the installation is painfully slow (it has taken > 30 min to install a large metaData package on a PIII, 933 MHz box running Mandrake 9.2). The vast majority of the time is spent moving datasets to lazyload DB.

It takes a long time to build the win32 packages as well, but once the package is built, the installation is quick, so there is no real problem for our end users. So my question is this; is there a mechanism that can be used to pre-build the lazyload DB for source packages to decrease the installation time for our end users?

Best,

Jim

James W. MacDonald
Affymetrix and cDNA Microarray Core
University of Michigan Cancer Center
1500 E. Medical Center Drive
7410 CCGC
Ann Arbor MI 48109
734-647-5623



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