Displaying 20 results from an estimated 20000 matches similar to: "parallel: Race-condition concern regarding graphics devices in a multi-thread environment"
2010 Aug 21
1
R-level expansion of Rplot%03d.png
Dear list,
I'm using the brew package to generate a report containing various
plots. I wrote a function that creates a plot in png and pdf formats,
and outputs a suitable text string to insert the file in the final
document using the asciidoc syntax,
<%
tmp <- 1
makePlot = function(p, name=paste("tmp",tmp,sep=""), width=300)
{
2008 Nov 07
1
determining plot location in lattice
Hi,
I'm dealing with a lattice plot inserted into a tk widget and would like
to know when a user has clicked on the plot area of a plot (i.e. inside
the axes). For example,
library(tkrplot)
library(lattice)
tt <- tktoplevel()
makePlot <- function() print(xyplot(1 ~ 1))
printCoords <- function(x, y) print(c(x, y))
img <- tkrplot(tt, makePlot)
tkbind(img, "<1>",
2011 Jul 28
1
filterMicroRna function: Sample replicates in preprocessing Agilent miRNA dataset
Hi,
I have a question about filterMicroRna in AgiMicroRna package function for filtering probes in Agilent microRNA dataset.
>ddPROC = filterMicroRna(ddNORM.micro, dd, control = TRUE, IsGeneDetected = TRUE, wellaboveNEG = FALSE, limIsGeneDetected = 75, limNEG = 25, makePLOT = TRUE, target.micro, verbose = TRUE)
If in a dataset there are two or more sample replicates and in the step of
2009 Aug 27
2
setting par(srt) according to plot aspect ratio
How can I look up the aspect ratio of a plot, so I can use that to correctly
adjust the angle of text which is supposed to be parallel to a line in the
plot?
The following example code works for a 1:1 aspect ratio, but puts the text
at the wrong angle if the plot region is short and wide or tall and narrow.
I can't find a par() component containing the plot aspect ratio. It will
be for
2019 May 20
0
Race condition on parallel package's mcexit and rmChild
I've been hacking with parallel package for some time and built a
parallel processing framework with it. However, although very rarely,
I did notice "ignoring SIGPIPE signal" error every now and then.
After a deep dig into the source code, I think I found something worth
noticing.
In short, wring to pipe in the C function mc_exit(SEXP sRes) may cause
a SIGPIPE. Code from
2019 May 20
0
Race condition on parallel package's mcexit and rmChild
This issue has already been addressed in 76462 (R-devel) and also ported
to R-patched. In fact rmChild() is used in mccollect(wait=FALSE).
Best
Tomas
On 5/19/19 11:39 AM, Sun Yijiang wrote:
> I've been hacking with parallel package for some time and built a
> parallel processing framework with it. However, although very rarely,
> I did notice "ignoring SIGPIPE signal"
2019 May 20
1
Race condition on parallel package's mcexit and rmChild
Have read the latest code, but I still don't understand why mc_exit
needs to write zero on exit. If a child closes its pipe, parent will
know that on next select.
Best,
Yijiang
Tomas Kalibera <tomas.kalibera at gmail.com> ?2019?5?20??? ??10:52???
>
> This issue has already been addressed in 76462 (R-devel) and also ported
> to R-patched. In fact rmChild() is used in
2019 May 19
2
Race condition on parallel package's mcexit and rmChild
I've been hacking with parallel package for some time and built a
parallel processing framework with it. However, although very rarely,
I did notice "ignoring SIGPIPE signal" error every now and then.
After a deep dig into the source code, I think I found something worth
noticing.
In short, wring to pipe in the C function mc_exit(SEXP sRes) may cause
a SIGPIPE. Code from
2012 Apr 18
1
multi-machine parallel setup?
Dear R experts:
could someone please point me to a page that explains how to set up
more than 1 machine for library parallel (which is quickly becoming my
favorite!)
my dream setup would be a design where I just pass a list of
hostnames:user:password to my parallel master, and then start R
listener processes on each of my slaves by hand. R would start slave
processes automatically on each slave
2015 Jul 03
6
[Bug 2420] New: Race condition regarding ControlPersist and ControlMaster=auto
https://bugzilla.mindrot.org/show_bug.cgi?id=2420
Bug ID: 2420
Summary: Race condition regarding ControlPersist and
ControlMaster=auto
Product: Portable OpenSSH
Version: 6.6p1
Hardware: amd64
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: ssh
2009 Jun 05
1
Antialiasing plots and text on different devices
I have a question about antialiasing when R generates bitmaps. (This follows
a thread on the ggplot2 mailing list.)
I mostly use R on Linux, although I sometimes use it in Mac and Windows as
well. On Linux, I've found that plotting shapes 15-18 via cairo results in
bad-looking output. The points are not antialiased, and they are jagged and
misshapen. Plots generated in Windows also aren't
2013 Mar 28
1
Makefile race condition with parallel make
When attempting to build syslinux in parallel (make -j5), I encountered
the following error at the end:
rm -f liblpxelinux.a
ar cq liblpxelinux.a rawcon.o ./fs/pxe/dhcp_option.o ./fs/pxe/pxe.o ./fs/pxe/tftp.o ./fs/pxe/urlparse.o ./lwip/src/netif/ethernetif.o ./lwip/src/netif/etharp.o ./lwip/src/netif/slipif.o ./lwip/src/netif/ppp/md5.o ./lwip/src/netif/ppp/randm.o ./lwip/src/netif/ppp/chpms.o
2016 Nov 24
1
[parallel-package] feature request: set default cluster type via environment variable
Dear all,
I?m working as an administrator of a High-Performance Computing (HPC) Cluster which runs on Linux. A lot of people are using R on this Linux cluster and, of course, the *parallel* package to speed up their computations.
It has been our collective experience, that using |makeForkCluster| yields an overall better experience /on Linux/ than the |makePSOCKcluster|, for whatever definition
2012 Feb 16
1
[LLVMdev] parallelization of sequential program in thread level to run on multi-core processors
hi
i have only one week to do this project.i know its impossible.can you help
me?
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2010 May 18
0
The npRmpi package (parallel np package for multi-core environments)
Dear R users,
A parallel implementation of the np package titled `npRmpi' is now available on CRAN. This package can take advantage of multiple core computing environments to reduce the run time associated with the methods contained in the np package.
Kindly see the vignette for details and examples on modifying np code and running it in a parallel environment. You are requested to seek
2010 May 18
0
The npRmpi package (parallel np package for multi-core environments)
Dear R users,
A parallel implementation of the np package titled `npRmpi' is now available on CRAN. This package can take advantage of multiple core computing environments to reduce the run time associated with the methods contained in the np package.
Kindly see the vignette for details and examples on modifying np code and running it in a parallel environment. You are requested to seek
2013 Oct 21
2
png(type='cairo'): point symbols without boarders are not anti-aliased?
Hi,
It seems that anti-aliasing in png(type = 'cairo') is not well
supported for the point symbols without boarders, e.g. pch = 16. The
Cairo package works well, though. You can compare png() with
CairoPNG():
png(): http://i.imgur.com/8niB3jX.png
CairoPNG(): http://i.imgur.com/FZBJOxm.png
f = function(dev, ..., main = '') {
dev(...)
plot(c(1, 2, 1, 2), c(1, 1, 2, 2),
2012 Sep 15
2
Risk of readRDS() not detecting race conditions with parallel saveRDS()?
I hardly know anything about the format used in (non-compressed)
serialization/RDS, but hoping someone with more knowledge could give
me some feedback;
Consider two R processes running in parallel on the same unknown file
system. Both of them write and read to the same RDS file foo.rds
(without compression) at random times using saveRDS(object,
file="foo.rds", compress=FALSE) and
2017 Aug 21
1
Control multi-threading in standard matrix product
Hi Ista,
Maybe a little comment in the 'matmult {base}' doc page or on the
'options {base}' in the field 'matprod' would be useful to remind users
to be cautious regarding BLAS multi-threading?
I understand why this is a BLAS related issue and not directly an R
related issue. Nonetheless, my concern was for non-advanced R users,
that may don't even know what BLAS
2012 Dec 13
1
possible bug in function 'mclapply' of package parallel
Dear parallel users and developers,
I might have encountered a bug in the function 'mclapply' of package
'parallel'. I construct a matrix using the same input data and code with a
single difference: Once I use mclapply and the other time lapply.
Shockingly the result is NOT the same.
To evaluate please unpack the attached archive and execute
Rscript mclapply_test.R
I put the