Displaying 14 results from an estimated 14 matches for "ncore".
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2019 Feb 01
2
Set the number of threads using openmp with .Fortran?
...compile instructions accordingly but i had no luck.
*This is my makevars:*
PKG_FCFLAGS="-fno-stack-protector"
F90FLAGS = "-fopenmp"
LDFLAGS = "-fopenmp"
*This is my Fortran module:*
module hello_openmp
use omp_lib
implicit none
contains
subroutine hello(ncores) bind(C, name="hello_")
use, intrinsic :: iso_c_binding,
only : c_double, c_int
integer(c_int), intent(in) :: ncores
integer :: iam
! Specify number of threads to us...
2019 Feb 02
1
Set the number of threads using openmp with .Fortran?
..._CFLAGS)
>
> ##### Phony target for R's build system to invoke #####
> all: $(SHLIB)
>
> ##### Clean target #####
> clean:
> rm -f *.o *.mod
>
> And when I run my hello world function all the threads are used
> regardless of what i specify:
>
> > hello(ncores = 2) Hello from 1
> Hello from 3
> Hello from 0
> Hello from 9
> Hello from 8
> Hello from 2
> Hello from 6
> Hello from 10
> Hello from 11
> Hello from 5
> Hel...
2019 Feb 02
0
Set the number of threads using openmp with .Fortran?
...FLAGS = $(SHLIB_OPENMP_FFLAGS)
PKG_LIBS = $(SHLIB_OPENMP_CFLAGS)
##### Phony target for R's build system to invoke #####
all: $(SHLIB)
##### Clean target #####
clean:
rm -f *.o *.mod
And when I run my hello world function all the threads are used
regardless of what i specify:
> hello(ncores = 2) Hello from 1
Hello from 3
Hello from 0
Hello from 9
Hello from 8
Hello from 2
Hello from 6
Hello from 10
Hello from 11
Hello from 5
Hello from 7
Hello from 4
$ncore...
2013 Apr 18
1
snow: cluster initialization
Dear all,
I found a strange thing with the snow package.
This will work:
y = matrix(1:4, 2)
cl = makeCluster(rep('localhost', 8), type='SOCK')
parMM(cl, y, y)
This will not:
y = matrix(1:4, 2)
ncore = system('nproc')
parMM(cl, y, y)
Error in cut.default(i, breaks) : invalid number of intervals
I also tried:
cl = makeCluster(rep('localhost', ncore), type='SOCK')
cl = makeCluster(rep('localhost', as.integer(ncore)), type='SOCK')
no luck.
Could anyone p...
2024 Oct 14
2
Error in .local(x, ...) invalid layer names
...z de ejecutar porque me da error.
Tras cargar todos los packages necesarios en RStudio, ejecuto el siguiente código:
r <- raster("pendiente_grados_reclas.tif")
locs <- st_read("puntos.geojson")
lcps <- create_FETE_lcps(x = r, locations = locs, cost_distance = FALSE, ncores = 1)
Y me da el siguiente mensaje de error:
"Error in .local(x, ...) invalid layer names"
El código usado es igual al que viene en la ayuda del script y los nombres de las capas son iguales a las creadas, por lo que no comprendo el error. He estado buscando por internet pero no encuent...
2014 Apr 18
2
[LLVMdev] multithreaded performance disaster with -fprofile-instr-generate (contention on profile counters)
...I have 10 engineers in my company,
> I probably want to give them 10 working desks as well. But let's not go
> insane. If I have 1000 engineers, 100 desks must be enough for them. This
> must reduce costs.
> The baseline memory consumption for systems (and amount of RAM!) is
> O(NCORES), not O(1). In some read-mostly cases it's possible to achieve
> O(1) memory consumption, and that's great. But if it's not the case here,
> let it be so.
>
>
>
> > shard_count = std::min(MAX, std::max(NUMBER_OF_THREADS, NUMBER_OF_CORES))
>
> Threads do not p...
2014 Apr 18
4
[LLVMdev] multithreaded performance disaster with -fprofile-instr-generate (contention on profile counters)
On Apr 17, 2014, at 2:04 PM, Chandler Carruth <chandlerc at google.com> wrote:
> On Thu, Apr 17, 2014 at 1:27 PM, Justin Bogner <mail at justinbogner.com> wrote:
> Chandler Carruth <chandlerc at google.com> writes:
> > if (thread-ID != main's thread-ID && shard_count < std::min(MAX, NUMBER_OF_CORES)) {
> > shard_count = std::min(MAX,
2015 May 11
1
Foreach %dopar% operator incorrectly load balancing
...o load balance between all of them. The issue with
this is that it doesn't actually seem to perform non-trivial tasks at all
anymore.
This is an example of testing code I've been using for testing the %dopar%
loop.
library(iterators)
library(foreach)
library(doParallel)
library(Parallel)
nCores <- 4
cl <- makeCluster(nCores)
registerDoParallel(cl)
trials = 100000
x <- iris[which(iris[,5] != "setosa"),c(1,5)]
t2 <- system.time({
r2 <- foreach(icount(trials), .combine=cbind) %dopar% {
ind <- sample(100,100,replace= TRUE)
results1 <- glm(x[in...
2014 Apr 18
2
[LLVMdev] multithreaded performance disaster with -fprofile-instr-generate (contention on profile counters)
...company, I probably want to give them 10 working desks as well. But let's
>>> not go insane. If I have 1000 engineers, 100 desks must be enough for them.
>>> This must reduce costs.
>>> The baseline memory consumption for systems (and amount of RAM!) is
>>> O(NCORES), not O(1). In some read-mostly cases it's possible to achieve
>>> O(1) memory consumption, and that's great. But if it's not the case here,
>>> let it be so.
>>>
>>>
>>>
>>> > shard_count = std::min(MAX, std::max(NUMBER_OF_THREA...
2014 Aug 07
2
How to (appropropriately) use require in a package?
Dear All,
What is the preferred way for Package A, to initialize a cluster, and load
Package B on all nodes?
I am writing a package that parallelizes some functions through the use of
a cluster if useRs are on a Windows machine (using parLapply and family).
I also make use of another package in some of my code, so it is necessary
to load the required packages on each slave once the cluster is
2012 Sep 03
1
[GIT-PULL] XFS filesystem driver
...xfs_dir2_sf_t *sf = (xfs_dir2_sf_t *)&core->di_literal_area[0];
+ xfs_dir2_sf_entry_t *sf_entry;
+ uint8_t count = sf->hdr.i8count ? sf->hdr.i8count : sf->hdr.count;
+ struct fs_info *fs = parent->fs;
+ struct inode *inode;
+ xfs_intino_t ino;
+ xfs_dinode_t *ncore = NULL;
+
+ xfs_debug("count %hhu i8count %hhu", sf->hdr.count, sf->hdr.i8count);
+
+ sf_entry = (xfs_dir2_sf_entry_t *)((uint8_t *)&sf->list[0] -
+ (!sf->hdr.i8count ? 4 : 0));
+ while (count--) {
+ uint8_t *start_name = &sf_entry->name[0];
+ uin...
2015 Jul 18
1
[PATCH 1/2] xfs: rename xfs_is_valid_magicnum to xfs_is_valid_sb
xfs_is_valid_magicnum is not actually a generic function that checks for
magic numbers, instead it checks only for superblock's one.
Signed-off-by: Paulo Alcantara <pcacjr at zytor.com>
---
core/fs/xfs/xfs.c | 13 +++++--------
core/fs/xfs/xfs.h | 19 ++++++++++---------
2 files changed, 15 insertions(+), 17 deletions(-)
diff --git a/core/fs/xfs/xfs.c b/core/fs/xfs/xfs.c
index
2013 Jan 29
0
Package parallel left orphan processes, how to clean-up?
Hi,
I've using package DEXSeq that implements functions with nCores for
speed-up. The functions work fine, but I found out that the children
processes were not terminated, they still hold memory, and new command
will start up new children processes. So if I don't manually kill those
orphan processes, they will cause problem. I was qlogin to SGE cluster
node to...
2015 Dec 15
8
[PATCH] xfs: Add support for v3 directories
...2_sf_entry_t *sf_entry;
+ uint8_t ftypelen = core->di_version == 3 ? 1 : 0;
uint8_t count = sf->hdr.i8count ? sf->hdr.i8count : sf->hdr.count;
struct fs_info *fs = parent->fs;
struct inode *inode;
+ xfs_dir2_inou_t *inou;
xfs_intino_t ino;
xfs_dinode_t *ncore = NULL;
xfs_debug("dname %s parent %p core %p", dname, parent, core);
xfs_debug("count %hhu i8count %hhu", sf->hdr.count, sf->hdr.i8count);
- sf_entry = (xfs_dir2_sf_entry_t *)((uint8_t *)&sf->list[0] -
+ sf_entry = (xfs_dir2_sf_entry_t *)((uint8...