Displaying 20 results from an estimated 600 matches similar to: "Process to Incorporate Functions from {parallely} into base R's {parallel} package"
2020 Nov 07
2
Process to Incorporate Functions from {parallely} into base R's {parallel} package
FWIW, there are indeed a few low hanging bug fixes in 'parallelly'
that should be easy to incorporate into 'parallel' without adding
extra maintenance. For example, in parallel::makePSOCKcluster(), it
is not possible to disable SSH option '-l USER' so that it can be set
in ~/.ssh/config. The remote user name will be the user name of your
local machine and if you try to
2020 Nov 07
0
Process to Incorporate Functions from {parallely} into base R's {parallel} package
If these are easy changes, maybe someone will incorporate them. You'll
make the argument stronger for doing that if you can explain why it's
better to do that than to keep them in parallely.
Duncan Murdoch
On 07/11/2020 1:39 p.m., Henrik Bengtsson wrote:
> FWIW, there are indeed a few low hanging bug fixes in 'parallelly'
> that should be easy to incorporate into
2020 Nov 07
0
Process to Incorporate Functions from {parallely} into base R's {parallel} package
On 06/11/2020 4:47 p.m., Balamuta, James Joseph wrote:
> Hi all,
>
> Henrik Bengtsson has done some fantastic work with {future} and, more importantly, greatly improved constructing and deconstructing a parallelized environment within R. It was with great joy that I saw Henrik slowly split off some functionality of {future} into {parallelly} package. Reading over the package?s README, he
2013 Oct 16
1
Parallel R expression evaluations
Hi all,
I am using R-3.0.1 under Linux platform to embed R into my C++ code.
I am facing an error while executing more than 1 R-expressions parallelly.
I am executing round(X) and abs(X) parallelly on a set of 50 input rows
which resulted in segmentation fault after getting the following errors.
Error: unprotect_ptr: pointer not found
Error: argument to 'findVar' is not an environment
2024 Feb 16
1
Packages sometimes don't update, but no error or warning is thrown
Hey everyone,
Thanks for all the input. It's happening again. This time for the packages "DBI", "parallelly", "segmented", "survival", "V8". So, RStudio shows updates for those and updating them via RStudio leads to this output:
```
> install.packages(c("DBI", "parallelly", "segmented", "survival",
2011 Dec 13
1
How to add points to two plots parallelly ?
I am looking for ways to add points to three different plots in parallel.
I generate three scatter plots and name them as s3d1, s3d2 and s3d3
s3d1<-scatterplot3d(mtcars[,3],mtcars[,4],mtcars[,5],main="common",pch=20)
s3d2<-scatterplot3d(mtcars[,3],mtcars[,4],mtcars[,5],main="common",pch=20)
2013 Dec 24
2
Parallel computing: how to transmit multiple parameters to a function in parLapply?
Hi R-developers
In the package Parallel, the function parLapply(cl, x, f) seems to allow
transmission of only one parameter (x) to the function f. Hence in order to
compute f(x, y) parallelly, I had to define f(x, y) as f(x) and tried to
access y within the function, whereas y was defined outside of f(x).
Script:
library(parallel)
f <- function(x) {
z <- 2 * x + .GlobalEnv$y # Try to
2018 Jul 02
2
Is there a large variance in xapian searching?
Dear XAPIAN developers,
I was using xapian to index large than 13 million document about Q &
A(Quora similarly). I will share some performance data about indexing
and searching, and I will seek some help for improving performance of
searching.
My computer has 8 i7 at 3.4G CPU and 16G memory, ubuntu 16.04. Dataset
include about 13M document, each document will be cut into 35
term(Chinese
2006 Sep 01
2
makeSOCKcluster
Hi,
I am a newbie to R and trying to implement parallelism in R. I am currently using R-2.3.1, and Cygwin to run R on Windows xp.
ssh and all are working fine,
When I try to create a socket connection as
makeSOCKcluster(c("localhost","localhost")),
it just waits for the other prcess on localhost to get created and respond. But this other process is
2008 May 18
3
Opening more than 1 R console in Windows
Hi all,
I recently found out that R does not utilize fully the Duo Core capability
when you only run one instance of R.
I did some number crunching today and it seems that if I only open 1 R
console, it uses 50% of my CPU (either 50-50 or 100-0 on 2 cores).
Then, I open the second instance and divide the work into two parts, and run
them parallelly, they seems to utilize 100% of my CPU.
So, my
2007 Aug 14
1
makeSOCKcluster
Hi,
I am attempting to implement a mixed (windows/linux) snow sockets
parallelism in R, but am running into difficulties similar to a post made
Aug 31, 2006 under the same subject heading. I feel like I may be one or
two non-obvious steps away from getting it all working, but I'm stuck. If
anyone can shed some light on this (I believe Prof. Tierney stated that he
has successfully run a
2017 Jan 27
2
cross-platform portable code in CRAN Repository Policy
On 27 January 2017 at 21:54, G?bor Cs?rdi wrote:
| On Fri, Jan 27, 2017 at 9:28 PM, Da Zheng <zhengda1936 at gmail.com> wrote:
| > What major R platforms does this policy refer to?
| >
|
| Linux, macOS, Windows.
|
|
| > Currently, my package runs in Ubuntu. If it works on both Ubuntu and
| > Redhat, does it count as two platforms?
| >
|
| I think that Linux is just one. Is
2024 Feb 18
0
Packages sometimes don't update, but no error or warning is thrown
G'day Philipp,
On Fri, 16 Feb 2024 17:33:13 +0100
Philipp Schneider <philipp-schneider at gmx.net> wrote:
> Thanks for all the input. It's happening again. This time for the
> packages "DBI", "parallelly", "segmented", "survival", "V8". So,
> RStudio shows updates for those and updating them via RStudio leads
> to this
2012 Sep 26
0
[LLVMdev] [RFC] Parallelization metadata and intrinsics in LLVM (for OpenMP, etc.)
Hi,
Sorry for the hiatus, busy time at my university. :)
After a false start and some (hopefully cogent) thought, I am now of
the opinion that it will be better to have llvm natively support a
somewhat different notion of parallel computation and have the
frontend lower OpenMP directives (and possibly other such things) into
the same.
In short, I propose a intrinsic based approach which hinges
2018 Oct 31
1
PATCH: Asserting that 'connection' used has not changed + R_GetConnection2()
SUMMARY:
I'm proposing that R assert that 'connection' options have not changed
since first created such that R will produce the following error:
> fh <- file("a.txt", open = "w+")
> cat("hello\n", file = fh)
> close(fh)
> fh2 <- file("b.txt", open = "w+")
> cat("world\n", file = fh2)
>
2015 Feb 27
2
static pdf vignette
Dear all,
In my package I have a computational expensive Rnw file which can't pass R CMD check. Therefore I set eval=FALSE in the Rnw file. But I would like to have the pdf vignette generated by the Rnw file with eval=TRUE. It seems to me a static pdf vignette is an option. Any suggestions on this?
Thanks,
Zhu Wang
**Connecticut Children's Confidentiality Notice**
This e-mail
2019 Dec 06
2
long vector support
All,
At first glance, a recent commit to R-devel (
https://github.com/wch/r-source/commit/2c182014ecc8c2407a89092c9162d86046bd18da)
appears to be related to long vector support. But as Henrik Bengtsson
points out at
https://github.com/HenrikBengtsson/Wishlist-for-R/issues/97#issuecomment-562659134,
writeBin() still prohibits long vectors. Are there any plans to add long
vector support to R
2020 May 01
4
Request: tools::md5sum should accept connections and finally in-memory objects
AFAIK there is no hashing utility in base R which can create hash
digests of arbitrary R objects. However, as also described by Henrik
Bengtsson in [1], we have tools::md5sum() which calculates MD5 hashes of
files. Calculating hashes of in-memory objects is a very common task in
several areas, as demonstrated by the popularity of the 'digest' package
(~850.000 downloads/month).
Upon
2018 May 03
2
download.file does not process gz files correctly (truncates them?)
On Thu, May 3, 2018 at 2:42 PM, Henrik Bengtsson
<henrik.bengtsson at gmail.com> wrote:
> Use mode="wb" when you download the file. See
> https://github.com/HenrikBengtsson/Wishlist-for-R/issues/30.
>
> R core, and others, is there a good argument for why we are not making this
> the default download mode? It seems like a such a simple fix to such a
> common
2009 Jan 09
1
snow and different R versions
Dear Luke and others,
I have many R versions on my machine and want to start a particular
one when snow builds its cluster. (The same version I start snow
from.) It seems that everything is set up correctly in
defaultClusterOptions:
> mget(ls(defaultClusterOptions), defaultClusterOptions)
$homogeneous
[1] TRUE
$manual
[1] FALSE
$master
nodename
"maya.unil.ch"
$outfile
[1]