On Fri, Aug 22, 2014 at 6:57 PM, William Dunlap wrote:
> There is no /usr/sbin/sysctl on my Ubuntu 12.04 machine. There is a
> /sbin/sysctl, but it does not accept the '-n hw.ncpu' arguments. Its
> /usr/bin/nproc [-all] will tell the number of available [installed]
> processing units and 'cat /p
But parallel::detectCores(TRUE) is a call of desparation: this ran
code intended for FreeBSD.
If all else fails read the help:
It has methods to do so for Linux, OS X, FreeBSD, Solaris, Irix
and Windows. ‘detectCores(TRUE)’ could be tried on other
Unix-alike systems.
On Fri, 2
Thanks, Bill. The output is:
> trace(system, quote(print(command)))
parallel::detectCores(TRUE)
Tracing function "system" in package "base"
[1] "system"
>
Tracing system(cmd, TRUE) on entry
[1] "/usr/sbin/sysctl -n hw.ncpu 2>/dev/null"
Error in system(cmd, TRUE) : error in running command
>
On
On 22/08/14 16:03, Marius Hofert wrote:
Hi,
Both under the current R-devel (r66456) and a version from about 3
months ago, I experience the following behavior:
parallel::detectCores(TRUE)
Error in system(cmd, TRUE) : error in running command
traceback()
3: system(cmd, TRUE)
2: gsub("^ +",
There is no /usr/sbin/sysctl on my Ubuntu 12.04 machine. There is a
/sbin/sysctl, but it does not accept the '-n hw.ncpu' arguments. Its
/usr/bin/nproc [-all] will tell the number of available [installed]
processing units and 'cat /proc/cpuinfo | grep processor | wc -l' will
also give the number
st 22, 2014 10:03:13 PM
>>> Subject: [Rd] parallel::detectCores(TRUE) gives: Error in system(cmd, TRUE)
>>> : error in running command
>>>
>>> Hi,
>>>
>>> Both under the current R-devel (r66456) and a version from about 3
>>> months ago, I
The same is true in R-2.14.1 on Ubuntu 12.04.4 LTS . Put a trace on
system with
trace(system, quote(print(command)))
parallel::detectCores(TRUE)
and you will see the offending shell command.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Fri, Aug 22, 2014 at 1:03 PM, Marius Hofert
wrote:
Hello,
Inline.
Em 22-08-2014 22:18, Tobias Verbeke escreveu:
- Original Message -
From: "Marius Hofert"
To: "R-devel"
Sent: Friday, August 22, 2014 10:03:13 PM
Subject: [Rd] parallel::detectCores(TRUE) gives: Error in system(cmd, TRUE) :
error in running comm
- Original Message -
> From: "Marius Hofert"
> To: "R-devel"
> Sent: Friday, August 22, 2014 10:03:13 PM
> Subject: [Rd] parallel::detectCores(TRUE) gives: Error in system(cmd, TRUE) :
> error in running command
>
> Hi,
>
> Both under
Hi,
Both under the current R-devel (r66456) and a version from about 3
months ago, I experience the following behavior:
> parallel::detectCores(TRUE)
Error in system(cmd, TRUE) : error in running command
> traceback()
3: system(cmd, TRUE)
2: gsub("^ +", "", system(cmd, TRUE)[1])
1: parallel::dete
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