[erlang-questions] Did Windows SMP support ever get added?
Thu Apr 30 11:54:53 CEST 2009
If you run "erl.exe" on windows, you get the "oldshell", which does not
inform about processors and stuff. The same behaviour as erl -oldshell on
linux. If you however run werl.exe, you should see a slogan saying
Erlang R13B (erts-5.7.1) [64-bit] [smp:2:2] [rq:4] [async-threads:0]
Where smp:2:2 means two logical processors and two schedulers.
In the oldshell, you can do a erlang:system_info(schedulers). or
On Wed, 29 Apr 2009, Carl McDade wrote:
> I guess what I am looking for is a simple way to confirm that Erlang is
> seeing the other processor. Since since Erlang does not show this info at
> start up the way it does on Linux.
> On Wed, Apr 29, 2009 at 12:59 PM, Kenneth Lundin
>> The SMP support on Windows was introduced in Erlang/OTP R12B which has
>> been available for more than a year now.
>> On Wed, Apr 29, 2009 at 12:49 PM, Carl McDade <>
>>> I am asking this because it is not clear in the docs. I recently went
>>> Windows 2003 server over to Windows XP Pro on a Dual processor PC.
>>> XP did not pick up both processors so I had to force it a bit. But now
>>> Windows sees both processors but Erlang does not. Is it because
>>> a. I need to reinstall Erlang
>>> b. change a configuration file somewhere
>> No, at least not any Erlang specific file
>>> c. forget about it. Erlang does not support SMP in Windows yet.
>> SMP support for Windows since R12B
>> I am not aware of any specific problems on Windows XP.
>> /Kenneth , Erlang/OTP , Ericsson
>>> Thanks for any advice
>>> Carl McDade
>>> erlang-questions mailing list
> Carl McDade
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