| [Time] Name | Message |
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[17:35] jomofo
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When I try to build libzmq from master I get this error (Linux x86) : make[1]: *** No rule to make target `local_lat.c', needed by `local_lat.o'. Stop.
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[17:37] jomofo
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Guessing it's a makefile issue, but don't have enough experience with automake to solve on my own. Any hints? Thanks
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[18:16] mikko
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jomofo: lemme test
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[18:16] mikko
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sec
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[18:19] mikko
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builds fine here from clean git clone
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[18:20] jomofo
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I will try a fresh clone
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[18:25] jomofo
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mikko: it builds now, thanks. I guess maybe I didn't clean before I pulled and some remnant was causing that?
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[18:26] mikko
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no harm in make clean && ./autogen.sh after pull
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[18:26] mikko
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and ./configure && make
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[18:28] jomofo
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mikko: I went through those steps several times after I pulled before I decided to come here. Maybe clean was not wiping something?
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[18:29] mikko
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make distclean might wipe more
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[18:29] mikko
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or just fail
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[18:29] mikko
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not sure
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[18:29] mikko
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but make clean doesnt remove auto* artifacts
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[18:31] jomofo
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That makes sense. I still have the old working copy so I'll play around and see if I can discover more about the black box I'm playing with... Thanks for the idea of starting over though
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[18:33] jomofo
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make distclean did the trick in the old working copy
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[19:00] sustrik
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jomofo: the files in question were renamed
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[19:01] sustrik
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automake has problem couping with it
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[19:01] sustrik
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in any case, fresh copy solves it
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[19:07] sophacles
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sustrik: a few days back you mentioned to me using *_thr for some throughput testing using very large numbers for message sizes. its strange when I do that remote_thr quits fairly soon and local_thr doesn't ever finish.
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[19:07] sophacles
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any thoughts as to why?
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[19:08] sustrik
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there's sleep(10) hardcoded in the sender
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[19:08] sustrik
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it transmission takes more than that, the sender quits in the middle of the transmission
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[19:08] sustrik
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ugly, i know
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[19:11] sophacles
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ahhh ok. ill dig into the code then. thanks for the pointer
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[19:13] sustrik
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to sanitize the throughput test, P2P sockets should be used instead of PUB/SUB
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[19:13] sophacles
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is there a better way to determine if all messages have been sent? (e.g a zmq_wait() or zmq_join())?
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[19:14] sustrik
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P2P being bi-directional would allow for "the end" message to be passed back to the sender
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[19:14] sustrik
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that's it, i think
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[19:15] sustrik
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just change to socket type to P2P, after the receiver receives all messages make it send a dummy message
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[19:15] sustrik
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the sender should send all messages and wait for the dummy message from receiver
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[19:16] sustrik
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the problem is that there are ~10 instances of perf tests for various languages
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[19:16] sustrik
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lot of work to fix all of it
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[19:17] sophacles
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OK thanks. ill do that. sounds simple enough. sanity check on my approach: a simple blocking read place of zmq_sleep is the magic mechanism correct?
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[19:17] sustrik
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ack
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[19:28] jomofo
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sustrik: troubleshooting an error with JNI and came across this: http://forums.sun.com/thread.jspa?threadID=5379144
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[19:29] jomofo
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sustrik: thought it was kinda funny when I noticed it was your thread
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[19:31] sustrik
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:)
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[19:32] sustrik
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i am not sure what the problem is now - gonzalo diethelm introduced the latest changes
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[19:32] sustrik
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he probably got something wrong
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[19:33] jomofo
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I will keep digging, I was just hoping someone on the list could tell me if I was doing something silly
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[19:35] sustrik
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jomofo: any chance the old version of jzmq is being loaded?
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[19:38] jomofo
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sustrik: I don't believe so, but I've done crazier things. I will wipe /usr/local/lib, verify it breaks my test, then build again
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[19:39] sustrik
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the code looks more or less correct:
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[19:39] sustrik
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JNIEXPORT void JNICALL Java_org_zeromq_ZMQ_00024Context_construct (JNIEnv *env,
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[19:39] sustrik
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jobject obj,
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[19:39] sustrik
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jint app_threads,
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[19:39] sustrik
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jint io_threads,
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[19:39] sustrik
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jint flags)
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[19:40] sustrik
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I am not sure what the 00024 thing means...
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[19:40] jomofo
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I think that must be somehow escaping the '$' you usually see with inner classes
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[19:41] sustrik
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0x24 = $ ?
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[19:41] sustrik
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lemme see
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[19:41] jomofo
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yup
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[19:41] sustrik
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bingo
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[19:42] jomofo
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But I don't know what's making that translation or if it's possibly broken at runtime?
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[19:42] sustrik
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shrug
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[19:43] sustrik
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can you check the prototype of the function in your JNI-generated header file?
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[19:44] sustrik
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is it the same?
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[19:44] sustrik
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org_zeromq_ZMQ_Context.h
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[19:44] jomofo
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JNIEXPORT void JNICALL Java_org_zeromq_ZMQ_00024Context_construct
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[19:44] jomofo
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(JNIEnv *, jobject, jint, jint, jint);
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[19:46] sustrik
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hm
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[19:46] sustrik
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let me try here
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[19:49] sustrik
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yuck, i cannot even build it
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[19:49] sustrik
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/usr/bin/ld: /usr/local/lib/libzmq.a(libzmq_la-zmq.o): relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC
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[19:49] sustrik
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/usr/local/lib/libzmq.a: could not read symbols: Bad value
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[19:51] sophacles
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so with p2p sockets, do i bind/connect or...? (wierd segfaulting issues)
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[19:51] jomofo
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sustrik: eek, I don't get that ... I can build it on Ubuntu 9.04 32-bit and 64-bit
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[19:52] jomofo
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Does this mean anything to you? http://stackoverflow.com/1147890/relocation-r-x86-64-32-against-a-local-symbol-error
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[19:53] sustrik
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page not found
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[19:54] jomofo
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doh, copy/paste error http://stackoverflow.com/questions/1147890/relocation-r-x86-64-32-against-a-local-symbol-error
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[19:58] sustrik
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my fault, i had libzmq compiled with --disable-shared on my system
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[19:58] sustrik
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now it builds ok
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[20:06] sophacles
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ok, better phrasing/more info: when i change the perf example to use P2P sockets, in local_thr, the first call to zmq_recv in the for loop segfaults. it is very odd, as i haven't changed anything other than changing the socket type and droping the setsockopt for subscription.
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[20:08] sustrik
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:(
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[20:08] sustrik
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P2P are experimental
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[20:08] sustrik
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there must be some bug there...
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[20:08] sustrik
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any chance of getting the backtrace?
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[20:09] sustrik
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jomofo: it seems to work on my box
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[20:10] sophacles
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I can do that, how do you want the trace?
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[20:11] sustrik
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just run it under gdb
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[20:11] sustrik
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when it breaks
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[20:11] sustrik
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bt
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[20:16] jomofo
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sustrik: if you don't mind, what distro/version/arch is your box running? It is similarly broken on both of my boxes. I verified only one copy of libjzmq, but maybe I should try again in a clean VM
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[20:17] sustrik
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Linux istvan 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010 x86_64 GNU/Linux
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[20:17] sophacles
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sustrik: http://paste.pocoo.org/show/201908/ has my version of local_thr and the gdb output. if you want any other info let me know
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[20:20] sustrik
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sophacles: created new issue for that (no. 18)
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[20:20] sustrik
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as for now you'll have to do with manually tweaking the sleep(10) thing :(
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[20:23] sophacles
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before anyone spends too much effort on that issue, it is linked against 2.0.6, which is hte current debian packaged version in Adrian's repo. If relevant work has been done since then i can build the latest git repo and try that
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[21:43] sophacles
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sustrik: i forgot to mention, thanks for the tip about remote_thr/local_thr w/ big message sizes, they fill the pipe w/out maxin the cpu :)
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[22:07] jomofo
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sustrik: do you use Sun JDK or OpenJDK or ... ? I don't think it matters much, but don't want to introduce more variables than I have to
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[22:07] jomofo
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P.S. I kept saying Ubuntu 9.04 earlier, but it is 9.10 which looks like what you're running
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