Date: Wed, 10 Jun 2015 18:42:17 +0000
From: "Cook, Rich"
To: "boost-users@lists.boost.org"
Subject: Re: [Boost-users] Boost-users Digest, Vol 4163, Issue 2
Message-ID: <4F5E3BDC-CDF6-442E-BB02-054510A61C61@llnl.gov>
Content-Type: text/plain; charset="utf-8"
Hi, here is the output of those commands, modified to reflect the actual tool I told boost to use, which is mpiCC, not mpicxx. What should I do with this output, and why does boost not accept it? Thanks!
rcook@rzgpu2 (~ ): /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:compile
-I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/hwloc/hwloc191/hwloc/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi/opal/mca/event/libevent2021/libevent/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include -I/usr/local/tools/openmpi-intel-debug-1.8.4/include/openmpi -pthread
rcook@rzgpu2 (~ ): /usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:link
-pthread -Wl,-rpath -Wl,/usr/local/tools/openmpi-intel-debug-1.8.4/lib -Wl,--enable-new-dtags -L/usr/local/tools/openmpi-intel-debug-1.8.4/lib -lmpi
Subject: Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper
From: Alain Miniussi (alain.miniussi_at_[hidden])
Date: 2015-06-10 10:07:41
* Next message: Hadidi, Lars: "[Boost-users] Boost Random Numbers: Normal Distribution"http://lists.boost.org/boost-users/2015/06/84409.php
* Previous message: Boris Sch??ling: "Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper"http://lists.boost.org/boost-users/2015/06/84407.php
* In reply to: Boris Sch??ling: "Re: [Boost-users] Cannot build boost with MPI using Intel openMPI wrapper"http://lists.boost.org/boost-users/2015/06/84407.php
________________________________
What is the result of:
$/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:compile
$/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpicxx --showme:link
?
On 10/06/2015 11:08, Boris Sch?ling wrote:
On Wed, 10 Jun 2015 02:37:26 +0200, Cook, Rich wrote:
Hello, I'm seeing this in my build output. I'm hoping someone can
help me find out what the actual problem is. Thanks for any assistance.
===============MPI Auto-configuration===============
MPI auto-detection failed: unknown wrapper compiler
/usr/local/tools/openmpi-intel-debug-1.8.4/bin/mpiCC
Please report this error to the Boost mailing list: http://www.boost.orghttp://www.boost.org/
You will need to manually configure MPI support.
MPI launcher: mpirun -np
====================================================
--
?Richard Cook
? Lawrence Livermore National Laboratory
Bldg-453 Rm-4024, Mail Stop L-557
7000 East Avenue, Livermore, CA, 94550, USA
? (office) (925) 423-9605
? (fax) (925) 423-6961
---
Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept.
(opinions expressed herein are mine and not those of LLNL)
------------------------------
Message: 2
Date: Wed, 10 Jun 2015 16:56:04 -0700
From: Nicholas Yue
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Modify an asio echo server so that it does
not send message back to client
Message-ID: <5578CE94.9000304@gmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed
On 2015-06-09 5:14 PM, Gavin Lambert wrote:
You need to pass the bytes_transferred to process as well, so that it
knows how much data was actually read and therefore how much of data_
is actually valid. Don't forget that this may be less than max_length
and may be different from what the client actually sent (ie. data sent
in one chunk may be received in multiple chunks).
Thanks Gavin.
I now have a process() method with the bytes_transferred parameter.
Newbie question, how do I know the last chunk has been sent, so
that I can now process the data (which will be binary) ?
Is there some simple example which illustrate this I can refer to ?
Cheers
Nicholas Yue
------------------------------
Message: 3
Date: Thu, 11 Jun 2015 12:16:06 +1200
From: Gavin Lambert
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Modify an asio echo server so that it does
not send message back to client
Message-ID:
Content-Type: text/plain; charset=windows-1252; format=flowed
On 11/06/2015 11:56, Nicholas Yue wrote:
I now have a process() method with the bytes_transferred parameter.
Newbie question, how do I know the last chunk has been sent, so
that I can now process the data (which will be binary) ?
Is there some simple example which illustrate this I can refer to ?
There isn't any inherent way to know. TCP is a stream protocol -- you
just receive a continuous stream of bytes with no demarcation of any kind.
You will need to define something at the application layer of the
protocol to decide when a logical unit is complete, typically either by
inserting some delimiter that you know can never occur mid-message or by
sending the length of the following data early on.
Note that ASIO does provide some helper methods for these scenarios --
instead of using async_read_some, which just returns data as it becomes
available, you can use asio::async_read (which you can tell to not
return until it has read a specific number of bytes) or
asio::async_read_until (read until a specific delimiter). (It's tricky,
though not impossible, to do a combination of the two -- but it's
something you should avoid if you have a choice.)
So for a line-based protocol you could async_read_until a CRLF (or just
LF, depending on the other end), or for a binary protocol that sends a
4-byte length followed by a payload you could async_read 4 bytes to get
the length, then async_read that many bytes to get the payload.
------------------------------
Message: 4
Date: Wed, 10 Jun 2015 23:00:42 -0400
From: Tim Song
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Boost Random Numbers: Normal Distribution
Message-ID:
Content-Type: text/plain; charset="utf-8"
On Wed, Jun 10, 2015 at 11:59 AM, Hadidi, Lars <
lhadidi@students.uni-mainz.de> wrote:
I'd like to know which method is employed here.
Have you tried reading the implementation (
http://www.boost.org/doc/libs/1_58_0/boost/random/normal_distribution.hpp)?
Hint: The first comment after the includes is
// tables for the ziggurat algorithm
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Message: 5
Date: Thu, 11 Jun 2015 08:06:04 +0200
From: Oswin Krause
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Boost Random Numbers: Normal Distribution
Message-ID:
Content-Type: text/plain; charset=UTF-8; format=flowed
Recently, it changed to Ziggurat's method.
On 2015-06-10 17:59, Hadidi, Lars wrote:
Hello,
I tried to find out which method is used by the boost library to
transform random numbers from a random number engine to the Gaussian
Distribution.
There are the Box-Muller-Method, Marsaglia's Polar Method and
Ziggurat's algorithm out there, but i could not determine which of
those is actually used by
boost::normal_distribution<double>?
I'd like to know which method is employed here.
Thanks for reply in advance,
sincerely,
Lars
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--
✐Richard Cook
✇ Lawrence Livermore National Laboratory
Bldg-453 Rm-4024, Mail Stop L-557
7000 East Avenue, Livermore, CA, 94550, USA
☎ (office) (925) 423-9605
☎ (fax) (925) 423-6961
---
Information Management & Graphics Grp., Services & Development Div., Integrated Computing & Communications Dept.
(opinions expressed herein are mine and not those of LLNL)
Cook, Rich