[ptxdist] [PATCH] Support reading number of CPUs on Mac OS X

[ptxdist] [PATCH] Support reading number of CPUs on Mac OS X

[Bernhard Walle]

Tested on 10.7 (Lion).

Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
---
 bin/ptxdist |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/bin/ptxdist b/bin/ptxdist
index 74a52ad..4edbac3 100755
--- a/bin/ptxdist
+++ b/bin/ptxdist
@@ -2093,6 +2093,8 @@ setup_config() {
 		if [ ${cpus} -eq 0 ]; then
 			cpus=1
 		fi
+	elif [ "$(uname -s)" = Darwin ] ; then
+		cpus=$(sysctl -n hw.ncpu)
 	else
 		cpus=1
 	fi
-- 
1.7.7.4


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Re: [ptxdist] [PATCH] Support reading number of CPUs on Mac OS X

[Michael Olbrich]

On Sun, Jan 22, 2012 at 09:47:47PM +0100, Bernhard Walle wrote:
> Tested on 10.7 (Lion).
> 
> Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
> ---
>  bin/ptxdist |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/bin/ptxdist b/bin/ptxdist
> index 74a52ad..4edbac3 100755
> --- a/bin/ptxdist
> +++ b/bin/ptxdist
> @@ -2093,6 +2093,8 @@ setup_config() {
>  		if [ ${cpus} -eq 0 ]; then
>  			cpus=1
>  		fi
> +	elif [ "$(uname -s)" = Darwin ] ; then
> +		cpus=$(sysctl -n hw.ncpu)

- Is sysctl alwyas in $PATH? On Linux it's in sbin.
- the value should be quoted.
- Does this _always_ and _only_ work on Mac OS X?

Maybe something like this:

	elfi ! cpus="$(sysctl -n hw.ncpu)" 2> /dev/null; then
		cpus=1
	fi

Michael

>  	else
>  		cpus=1
>  	fi
> -- 
> 1.7.7.4
> 
> 
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> 

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Re: [ptxdist] [PATCH] Support reading number of CPUs on Mac OS X

[Bernhard Walle]

Hi Michael,

Am 24.01.12 10:19, schrieb Michael Olbrich:
> 
> - Is sysctl alwyas in $PATH? On Linux it's in sbin.

I think so, but it's in /usr/sbin, so I can use /usr/sbin/syctl to be
more safe.

> - the value should be quoted.

ok.

> - Does this _always_ and _only_ work on Mac OS X?

Good point. I have no other system than Linux and Mac OS here, but
according to http://systhread.net/texts/200008sysctl.php it should work
on all BSDs, so yes, your solution is better.

Will create a new version of the patch later in the evening.


Regards,
Bernhard

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