similar to: Why not pthreads on Windows in 'parallel' package?

Aaaah ... and argh - I should have better not to post R question at midnight, especially when I know it forks the process and it's not using threads. Brain meltdown. (So, we'll proceed trying to use pthreads in matrixStats also for Windows). Sorry for the noise and thanks Kasper. Henrik On Aug 15, 2015 02:52, "Kasper Daniel Hansen" <kasperdanielhansen at gmail.com> wrote:

mclapply uses fork which is different from pthreads. As I understand it, pthreads requires you to rewrite code, fork is a system call which takes care of completely replicating the current state of the process. Kasper On Fri, Aug 14, 2015 at 5:00 PM, Henrik Bengtsson <henrik.bengtsson at ucsf.edu > wrote: > On Windows there are a few 'pthreads' implementation, e.g. >

Hi, I have attached my compressed config file. Thanks, Reza > On Aug 20, 2019, at 12:03 PM, Daniel P. Berrangé <berrange@redhat.com> wrote: > > Re-adding the mailing list CC - please don't drop it. > > On Tue, Aug 20, 2019 at 11:54:34AM -0400, reza shahriari wrote: >> Hi, >> >> I am using msys2. When I run `./configure` without any parameters

Hi, I tried that out, I got a new error about pthreads in my config.log. Could you take another look. Thanks again, Reza > On Aug 20, 2019, at 12:36 PM, Daniel P. Berrangé <berrange@redhat.com> wrote: > > On Tue, Aug 20, 2019 at 12:29:15PM -0400, reza shahriari wrote: >> Hi, >> >> I have attached my compressed config file. >> >> Thanks,

Hi, I am trying to compile Libvirt from the source code on windows using msys2 but keep hitting issues while running `./configure`. …. > checking whether C compiler handles -Wno-suggest-attribute=pure… yes > checking whether C compiler handles -Wno-suggest-attribute=const... yes > checking for how to force completely read-only GOT table… > checking for how to avoid indirect lib

Indeed, mingw and pthreads have C++11 atomics, so building clang (with atomics) should be possible even in cross compilation. I have no idea what is the win from *not* using winpthreads, it is one small DLL file with BSD license. For context (does not matter to mingw as host for buiilding clang but matters for clang running with mingw environment), clang TLS implementation is not same as mingw so

On Tue, Aug 20, 2019 at 12:29:15PM -0400, reza shahriari wrote: > Hi, > > I have attached my compressed config file. > > Thanks, > > Reza > > > > > On Aug 20, 2019, at 12:03 PM, Daniel P. Berrangé <berrange@redhat.com> wrote: > > > > Re-adding the mailing list CC - please don't drop it. > > > > On Tue, Aug 20, 2019 at

Hi, [This is a follow-up to the "New version of Rtools for Windows" thread in January, but I just subscribed and don't know how to reply to an old thread -- my apologies.] I was able to use the nuwen distro to build a gcc 4.9.2 toolchain and use it to build the latest R-patched with it. Below are some notes about what I did; I hope they will be useful for keeping Rtools

Re-adding the mailing list CC - please don't drop it. On Tue, Aug 20, 2019 at 11:54:34AM -0400, reza shahriari wrote: > Hi, > > I am using msys2. When I run `./configure` without any parameters and I still see missing pthreads impl. > > I have installed mingw64 cross compiler toolchain. Here is the output of pacman I see when searching for pthreads (they are all installed).

Thanks Simon, I will take note of the sensible default for core usage. I?m trying to achieve small scale parallelism, where tasks take 1-5 seconds and make fuller use of consumer hardware. Its not a HPC-worthy computation but even laptops these days come with 4 cores and I don?t see a reason to not make use of it. The goal for the current piece of code I?m working on is to bootstrap many

Is there any support for x86_64 pthreads for mini-OS ? Does the current newlib contains a functional implementation of pthreads ? -- Karim Allah Ahmed. LinkedIn <http://eg.linkedin.com/pub/karim-allah-ahmed/13/829/550/> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel

Henrik, the whole point and only purpose of mc* functions is to fork. That's what the multicore package was about, so if you don't want to fork, don't use mc* functions - they don't have any other purpose. I really fail to see the point - if you use mc* functions you're very explicitly asking for forking - so your argument is like saying that print() should have an option to

Hello, I spent a lot of a time on a weird bug, and I just managed to narrow it down. In parallel code (here with parallel::mclappy, but I got it doMC/multicore too), if the library(tcltk) is loaded, R hangs when trying to open a DB connection. I got the same behaviour on two different computers, one dual-core, and one 2 xeon quad-core. Here's the code: library(parallel) library(RSQLite)

Hi, My name is Luo Zengbo, a student from Zhejiang University, China. As I mentioned in IRC before(my IRC nick name is poe_), I am interested in GSoC project: Speed up the Test Suite. After discussed with Olly, I think this project can be divided into three steps: Step 1: Rewrite every call of the function get_writable_database(). I will pass writable database's name with

When using multicore-forking of the parallel package, is it possible for a child process to know that it is a fork? Something like: parallel::mclapply(1:10, FUN = function(i) { test_if_running_in_a_fork() }) I'm looking into ways to protect against further parallel processes (including threads), which not necessarily are created via the parallel:mc* API, are being spawned off recursively.

Thanks Henrik, That clears things up significantly. I did see the warning but failed to include it my initial email. It sounds like an RStudio issue, and it seems like that it?s quite intrinsic to how forks interact with RStudio. Given this code is eventually going to be a part of a package, should I expect it to fail mysteriously in RStudio for my users? Is the best solution here to migrate all

Every time I start WineX 3.2 on my Debian Woody I get: Your system requires the use of pthreads but the maximum system allowed stack size of 2052 kB may be too small for some games. If you experience problems, try rerunning with "-use-pthreads no" which may help. What does that means? Is there a way to definitively fix it, except the use of "-use-pthreads no" switch? --

On 03/25/2015 07:48 PM, Simon Urbanek wrote: > On Mar 25, 2015, at 3:46 PM, Valerie Obenchain <vobencha at fredhutch.org> wrote: > >> Hi Simon, >> >> I'm having trouble with nested parallel workers, specifically, forking inside socket connections. >> > > You simply can't by definition - when you fork *all* the workers share the same connection

dear r experts---Is there a multicore equivalent of by(), just like mclapply() is the multicore equivalent of lapply()? if not, is there a fast way to convert a data.table into a list based on a column that lapply and mclapply can consume? advice appreciated...as always. regards, /iaw ---- Ivo Welch (ivo.welch at gmail.com)

Hi there, does anyone have experience with Asterisk-AGI-Scripts in PHP while using pthreads in PHP? Are there any limitations or problems known? Best regards -Thorsten-