[Time] Name | Message |
[03:03] Led_Zeppelin
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hello.
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[03:03] Led_Zeppelin
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Is it possible to have a UDP socket with 0mq?
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[03:14] gandhijee
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hey, what would the socket be to only send msgs to a server?
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[03:14] gandhijee
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and i guess the server would have to open in rec only mode?
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[08:49] mikko
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gandhijee: PUSH/PULL, PUB/SUB
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[09:12] mrshpot
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hi
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[09:13] mrshpot
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is it OK to pass sockets between threads in ZeroMQ 2.1.0-git?
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[09:16] Guthur
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mrshpot: AFAIK sharing sockets between threads is not supported
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[09:16] mrshpot
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thanks
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[09:17] guido_g
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in 2.1.x you can move a socket from one thread to another
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[09:17] Guthur
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oh, sorry my bad
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[09:17] guido_g
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*shared* use of a socket is still not supported
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[09:17] mrshpot
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I want to have two threads: one that is receiving, and another one that is sending
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[09:18] mrshpot
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so I can't do that
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[09:18] guido_g
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right
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[09:18] mrshpot
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thank you :)
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[09:18] guido_g
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stupid idea anyway, because ømq uses one io thread itself
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[09:19] mikko
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mrshpot: what kind of situation would you use that design for?
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[09:19] mikko
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one thread receiving and one sending
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[09:19] mikko
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on same socket that is
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[09:20] mrshpot
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there is a worker performing a two-step computation
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[09:20] mrshpot
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and a "receive; calculate; send" pattern makes it stay idle for quite a time
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[09:21] mrshpot
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it would be more efficient to have a request queue and a response queue
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[09:21] mikko
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why don't you do recv/send in one thread and use inproc to hand work to worker threads?
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[09:22] guido_g
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receive / calculate / send doesn't sound like the thread has not enough to do
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[09:23] guido_g
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the sending is very fast, because it _simply_ pushes the data to the io thread internally
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[09:23] guido_g
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so after sending thread would get the next message quite fast
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[09:24] mrshpot
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I guess I'll go with single-threaded send/recv, then
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[09:24] guido_g
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right
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[09:25] guido_g
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allways *try* the simple things first
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[09:25] mrshpot
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:-)
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[10:13] Guthur
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sustrik, are you maintain the erlang binding?
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[11:11] pieterh
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Guthur, the maintainer should be mentioned on the binding page
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[11:11] pieterh
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Serge Aleynikov and Dhammika Pathirana, it says
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[12:02] Guthur
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pieterh: Ah ok, cheers
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[13:54] Guthur
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is ZFL at an early stage of development?
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[13:54] Guthur
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It doesn't seem to be very well advertised
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[13:57] Tester
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hey guys, I want to build a tcp server with 0mq, that would connect to non-0mq clients
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[13:57] Tester
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is there any problem combining 0mq and non-0mq sockets?
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[13:57] mikko
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Tester: would your clients speak 0mq wire protocol?
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[13:57] Tester
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no
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[13:58] Tester
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plain tcp
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[13:58] mikko
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then they couldn't really talk with 0mq
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[13:59] Tester
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I have control over hte server, not the clients... that's the problem
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[13:59] mikko
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as zeromq has a wire protocol for frames
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[13:59] Tester
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I see
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[13:59] guido_g
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there is no problem in using os level sockets in parallel w/ ømq sockets
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[14:00] guido_g
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you can even use them in the same event loop because ømq poll can handle normal (os level) sockets
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[14:01] guido_g
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so your clients can connect via tcp using their protocol and you can use ømq sockets for inter-server communication
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[14:03] Tester
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I see. My intention was to communicate directly to the clientes
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[14:03] Tester
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thanks guys
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[14:03] guido_g
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then the clients need to use ømq as well, as mikko said
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[16:06] Steve-o
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so who has any experience with IOCP?
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[16:10] mikko
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Steve-o: i am getting build errors (with ICC) when building zeromq2 --with-pgm
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[16:10] Steve-o
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The only best practices I can find is setting SO_SNDBUF to 0 and queuing up multiple sends, but for receive you must not set SO_RCVBUF to zero and you only need one pending recv
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[16:11] Steve-o
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mikko: ok, I think I sent a list of required changes to the list already?
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[16:11] mikko
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Steve-o: i might've missed that
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[16:11] mikko
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let me see
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[16:11] Steve-o
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There's no Autoconf for PGM so it only has support for Linux & MinGW32
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[16:12] Steve-o
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you want the changes listed in the intelc build environment here, http://code.google.com/p/openpgm/source/browse/trunk/openpgm/pgm/SConstruct.097.intelc
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[16:13] mikko
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i think the build env itself works ok
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[16:13] mikko
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i keep getting error on line for (unsigned i; ...
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[16:14] mikko
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unsigned i = 0
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[16:14] mikko
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i thought that is legal in C++ but not in C
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[16:14] Steve-o
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legal for C99
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[16:14] Steve-o
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hence you need -std=c99 flag
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[16:16] Steve-o
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I think you only need to add the flags -std=c99 -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -gcc-version=420
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[16:16] Steve-o
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I'm off house hunting be back later.
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[16:17] mikko
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-std=gnu99 at the moment
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[16:17] mikko
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seems like icc barfs with -std=gnu99 but works with -std=c99
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[18:29] Steve-o
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mikko: also of note is that icc yields worse performance than gcc for PGM, so ideally you build nodist-libpgm with gcc and the rest of zeromq with icc
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[19:05] mikko
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steve, havent got so fine-grained daily builds yet
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[19:06] mikko
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but think im gonna ahck at this at some point
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[19:07] Steve-o
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I wish there were better solutions but some platforms I cannot reliably detect features programmatically.
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[19:08] zomg
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mikko: out of curiosity, you using zmq with PHP or something else?
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[21:16] Guthur
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clrzmq2 actually works on linux out of the box
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[21:16] Guthur
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I'm well chuffed
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[22:58] mcr19
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what is the preferred site to upload sample code for reference on zeromq-dev?
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[23:26] kisielk
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mcr19: probably github?
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