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An article on an R package for parallel computing:
``In this paper we present an R add-on package for parallel computing: R/parallel. To use it, the programmer does not need to change his algorithm nor install and maintain any additional software as the R/parallel package is self-contained and capable of using current multicore processor desktop computers. It easily and effectively enables the automatic parallelization of loops without data dependencies, thus bringing the benefits of parallel computing within the reach of any bioinformatician using R. Its design allows its direct use with current bioinformatics analysis tools such as R/qtl, MetaNetwork or affyGG for analysis of genome-wide gene expression data.''
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Footwear
Although casual shoes are acceptable, they are not very functional on a golf course. A golfer should choose a pair of golf shoes that are manufactured with soft spikes on the soles to improve footing on the ground. Today, golfers can choose between classic wingtip of
[url=http://www.golfwholesaleseller.com/]wholesale golf clubs[/url] saddle shoes, casual or tennis-style golf shoes, or even golf sandals(ishiner)
.
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I tried to run it on both linix station and windows. It seems to run oK. However, the run time is much longer than running on one cpu. Does anybody know what is the problem? My code is roughly like this. Can somebody help me with this? Thanks
bgSubtract.dym.p <- function (sL.bg, mL.bg, sL.tg, mL.tg, lRT, rRT, ppm, lowThr, ppmAdj,fac)
{
sL.bg <- as.matrix(sL.bg)
sL.tg <- as.matrix(sL.tg)
mL.bg <- as.matrix(mL.bg)
mL.tg <- as.matrix(mL.tg)
mL.tg2 <- NULL
if( "rparallel" %in% names( getLoadedDLLs()) )
{
runParallel( resultVar="mL.tg2", resultOp="c", nWorkers=2 )
}
else
{
for (i in 1:nrow(sL.tg))
{
.....
for (j in start:end)
{
........
}
mL.tg2 <- c(mL.tg2, mL.tg[start:end,2])
}
}
return(mL.tg2)
}
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Footwear
Although casual shoes are acceptable, they are not very functional on a golf course. A golfer should choose a pair of golf shoes that are manufactured with soft spikes on the soles to improve footing on the ground. Today, golfers can choose between classic wingtip of
[url=http://www.golfwholesaleseller.com/]wholesale golf clubs[/url] saddle shoes, casual or tennis-style golf shoes, or even golf sandals(ishiner)
.
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