X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=ytyiezsZOTaAiA6P
	AHKX/U8Ozd/CdwX69i4mQMU6QLD93uU5Ogg84OJT8D1AD5HhUNWkYjbjf8Zw1fVz
	ImqmUZhB1OMl7Jq9tlnS+irL5ko8Qf1ktN6fartMYndcihwEAr4VPs8nxNcEXlK5
	hJvjWcEhY/oR7HWahF9ODUL1RGw=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=wWJsEGwYVmUg4Poc4Nuu4O
	fu5oI=; b=yrPTVBmkwv8NofqjzSdxn0RMNBLDigw5o9dbreAWfmJxYu8aXeCmyX
	z96vLr1l1yJQ2UiYnkSosMyGBcBAMAZDS3JL5HPEVlqiMQ7A48BhM0qtrQKNs0Pn
	qbtQmd/txgFk4PGJK+KVtkrDVx8ZSvyugOomnArAXTOcYXttlraB4=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=-0.9 required=5.0 tests=BAYES_00,KAM_LAZY_DOMAIN_SECURITY,SPF_HELO_PASS autolearn=no version=3.3.2 spammy=H*M:cygwin, razenshteyn, H*MI:sk:56E8A20, H*i:sk:56E8A20
X-HELO:	mx1.redhat.com
Subject:	Re: std::async from C++11 does not work
To:	cygwin AT cygwin DOT com
References:	<56E8A202 DOT 4060600 AT mit DOT edu>
From:	Yaakov Selkowitz <yselkowitz AT cygwin DOT com>
Message-ID:	<56E8CC28.7080508@cygwin.com>
Date:	Tue, 15 Mar 2016 21:59:52 -0500
User-Agent:	Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0
MIME-Version:	1.0
In-Reply-To:	<56E8A202.4060600@mit.edu>
X-IsSubscribed:	yes

On 2016-03-15 19:00, Ilya Razenshteyn wrote:
> I'm trying to compile and run the below code. As a result, only one copy
> of "f" is being executed at a time, that is, no new threads are spawned.
> Does anyone know what's going on?

Could be your code.  I tried other code[1] using std::async, and 
multiple cores are definitely used when std::launch::async is specified.

[1] https://github.com/sol-prog/async_tutorial

-- 
Yaakov

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -