- Pharo-users - lists.pharo.org

Re: [Pharo-users] About Zinc http components

by Alain Rastoul

Hi Phil, Yes, multi core support and communication is important, having that in pharo could be great. Unfortunately, no I actually have no usable project for that, mine is not a communication project and still really in pre-alpha stage. For now, I'm starting with Zinc, 0mq is just from a prospective eye. I have no experience with 0mq, I discovered it just few days ago (see Marten's messages), but it seemsto be easy to use. What I did is just read the echo server sample, and threw few lines in a workspace to see how it works (here modified to send/receive 8k pages instead of echoing the message). I am also interested in something more elaborate , as I will probably use it later, I will think about a simple test project (the workspace here is just a very first experiment) and see what I can do. The bindings are FFI, may be it should be rewritten/modified to use native boost (I know only the name here). If you want to look here it is, it's very basic and only the REQ/REP pattern (not sure the other works, I tried but the vm hanged, may be my fault, may be it also requires more work). You have to load Panu 0mq bindings before and put a zmq.dll in your path. The server (kill the server with Process browser to stop it) "====================================== classic sockets - REQ/REP server" [ | context serverSocket request count | [ count := 0 . context := ZmqContext new . serverSocket := ZmqResponseSocket new. serverSocket bind: 'tcp://*:5555' . [ true] whileTrue: [ request := serverSocket receive . "fake request" serverSocket send: (ByteArray new: 8*1024 ). "block response" count := count+1 ]. ] ensure: [ serverSocket close. ('server exited -', count asString, ' pages sent ') explore ] ] forkAt: Processor "systemBackgroundPriority" userBackgroundPriority "lowIOPriority hangs" . The client (5 sec bench of request/reply) : "======================================== classic sockets - REQ/REP client" [ | context socket response count bench | [ context := ZmqContext new . socket := ZmqRequestSocket new. count := 0. socket connect: 'tcp://127.0.0.1:5555' . bench := [ socket send: 'get xxx' asByteArray . "fake request" response := socket receive . count := count + 1 ] bench . ] ensure: [ socket close. bench explore. ('client asked for ',count asString) explore ] ] forkAt: Processor userBackgroundPriority "lowIOPriority" . Le 11/10/2014 12:31, phil(a)highoctane.be a Ã©crit : > Alain,â > > Yes, 0mq seems to be a good way to go as there is just more support > across the board. > > Have you a project on Smalltalkhub (or elsewhere) with your experiments > so that I could have a look? > I've updated the 0MQ bindings page to list the smalltalkhub pharo client > and also had a look at what was in the GST client. > > It would be nice to port the GST code to Pharo so that we would have a > nice package. > > 0mq could help with the multicore support very nicely. We are going to > use SDL for low level, why not go 0mq for interimage communication? It > makes sense to me. > > Phil

Oct. 11, 2014

Re: [Pharo-users] Using a private git repository with Metacello

by Thierry Goubier

Hi Julien, What didn't work? Thierry Le 11 oct. 2014 10:44, "Julien Delplanque" <julien(a)tamere.eu> a Ã©crit : > > Sorry for the late response, I have been a bit busy these days, > > I tried this but it didn't worked.... > > I'll try the Dale's solution soon. > > However, thank you for the help ;) > > Julien > On 09/10/14 07:09, Thierry Goubier wrote: > > Hi Julien, > > > > it should be possible on Linux and Mac OS by loading GitFileTree and > > using an url like: > > 'gitfiletree://bitbucket.com/owner/reponame&protocol=git'. > > > > Regards, > > > > Thierry > > > > Le 08/10/2014 10:44, Julien Delplanque a Ã©crit : > >> Hello, > >> > >> Is it possible to use Metacello to load a Pharo project from a private > >> git repository hosted on bitbucket for example? If it is, how? > >> > >> To load project from github I use: > >> > >> Metacello new > >> baseline: 'Project'; > >> repository: 'github://owner/reponame/repository'; > >> load. > >> > >> Is there a prefix for a git repository that is not hosted on github? > >> > >> Also, I think Metacello use HTTP to download the project, am I right? Is > >> it possible to make it use ssh? > >> > >> Thanks in advance, > >> > >> Julien > >> > >> > >> > > > > > >

Oct. 11, 2014

Re: [Pharo-users] About Zinc http components

by phil＠highoctane.be

Alain,â Yes, 0mq seems to be a good way to go as there is just more support across the board. Have you a project on Smalltalkhub (or elsewhere) with your experiments so that I could have a look? I've updated the 0MQ bindings page to list the smalltalkhub pharo client and also had a look at what was in the GST client. It would be nice to port the GST code to Pharo so that we would have a nice package. 0mq could help with the multicore support very nicely. We are going to use SDL for low level, why not go 0mq for interimage communication? It makes sense to me. Phil

Oct. 11, 2014

Re: [Pharo-users] About Zinc http components

by kilon alios

You are lucky that you hate windoom sometimes, I hate it all the time :D Yes as I said I am very happy so far with StreamSockets and I have found ways to minimise the socket communications so that the user don't experience any noticeable lag so I don't currently need either 0mq or nanomsg. So its unlikely that I will be wrapping nanomsg any time soon since my hands are already full with bringing Blender features to Pharo. I have done some very basic benchmarks with StreamSocket and it gives me around 1ms from the messages I am sending which is usually just small bytestring of one line of python code. It will be rare to want to send more than 100 messages in under a second since it would be better in that case if the code is that big to write a python module from pharo and load it to python. So speed for now does not seem an issue for me. Even if I notice delays my second option will be websockets. And if that is not good enough I could venture in the real of shared memory but I rather not. There are many things one wishes and wants to do, but in the end time is very limited. I also love to keep things easy and simple because I know how easy it is to underestimate the difficulty of things to do. Right now I ask myself what is the very easy things I can do with Pharo that can be practically useful for me. So far python and pharo sockets have been very easy and I am very happy with them. Its a lot of fun to manipulate external applications from pharo. On Sat, Oct 11, 2014 at 12:40 PM, Alain Rastoul <alf.mmm.cat(a)gmail.com> wrote: > Hi Kilon, > > I wanted to make some experiments with Nanomsg this morning, but had > some problems to build the libraries (they is no prebuilt binaries for > windows): > I discovered that the system path of my os > has been scratched by some recent mercurial installation, > the user path scratched by delphi and bonus, my mingw/cygwin install seems > to be sick too. > sometimes I hate windows :( - or is this a sign ? > > btw, my feeling about nanomsg is that it is still in beta, and 0mq much > more advanced > (they say some users includes AT&T, Cisco, EA, Los Alamos Labs, NASA, Weta > Digital, Zynga, > Spotify, Samsung Electronics, Microsoft, and CERN - not too bad). > The material about it (docs, presentations) sounds good too. > Not saying that nanomsg is not good, may be it will be the best in few > years, but at that > time I have a small preference in favour of 0mq. > > This part is not essential for me right now (the same as you if I > understand) > and I have lot of other things to finish, so I will delay it for some time, > but I am still interested in your experiments too : bindings, benchs, > findings. > > > Regards, > > Alain > > Le 10/10/2014 20:12, kilon alios a Ã©crit : > > I am interested too, my project depends on streamsocket to send python >> commands from pharo to blender . So far I have not stressed it too much >> and it looks like it works fast enough. Maybe something like websockets >> or nanomsg is better for me in the long run so I too keep an eye on >> these solutions. Time will tell. >> >> > > > >

Oct. 11, 2014

Re: [Pharo-users] About Zinc http components

by Alain Rastoul

Hi Kilon, I wanted to make some experiments with Nanomsg this morning, but had some problems to build the libraries (they is no prebuilt binaries for windows): I discovered that the system path of my os has been scratched by some recent mercurial installation, the user path scratched by delphi and bonus, my mingw/cygwin install seems to be sick too. sometimes I hate windows :( - or is this a sign ? btw, my feeling about nanomsg is that it is still in beta, and 0mq much more advanced (they say some users includes AT&T, Cisco, EA, Los Alamos Labs, NASA, Weta Digital, Zynga, Spotify, Samsung Electronics, Microsoft, and CERN - not too bad). The material about it (docs, presentations) sounds good too. Not saying that nanomsg is not good, may be it will be the best in few years, but at that time I have a small preference in favour of 0mq. This part is not essential for me right now (the same as you if I understand) and I have lot of other things to finish, so I will delay it for some time, but I am still interested in your experiments too : bindings, benchs, findings. Regards, Alain Le 10/10/2014 20:12, kilon alios a Ã©crit : > I am interested too, my project depends on streamsocket to send python > commands from pharo to blender . So far I have not stressed it too much > and it looks like it works fast enough. Maybe something like websockets > or nanomsg is better for me in the long run so I too keep an eye on > these solutions. Time will tell. >

Oct. 11, 2014

Re: [Pharo-users] Using a private git repository with Metacello

by phil＠highoctane.be

Very nice to have BitBucket support! Private repositories for free, that's golden. Thx Phil On Sat, Oct 11, 2014 at 10:40 AM, Julien Delplanque <julien(a)tamere.eu> wrote: > Thanks a lot I'll try this out! > > Julien > > > On 09/10/14 18:37, Dale Henrichs wrote: > > Julien, > > > > I recently added bitbucket:// support to metacello[1]. > > > > If you follow the installation instructions here[2], you can get the > > support loaded into Pharo3.0. > > > > Dale > > > > [1] https://groups.google.com/forum/#!topic/metacello/0vOzvQL10cQ > > [2] https://github.com/dalehenrich/metacello-work#pharo30 > > > > On Wed, Oct 8, 2014 at 1:44 AM, Julien Delplanque <julien(a)tamere.eu> > wrote: > > > >> Hello, > >> > >> Is it possible to use Metacello to load a Pharo project from a private > >> git repository hosted on bitbucket for example? If it is, how? > >> > >> To load project from github I use: > >> > >> Metacello new > >> baseline: 'Project'; > >> repository: 'github://owner/reponame/repository'; > >> load. > >> > >> Is there a prefix for a git repository that is not hosted on github? > >> > >> Also, I think Metacello use HTTP to download the project, am I right? Is > >> it possible to make it use ssh? > >> > >> Thanks in advance, > >> > >> Julien > >> > >> > > > >

Oct. 11, 2014

Re: [Pharo-users] About Zinc http components

by Alain Rastoul

Hi Marten, I took the 0mq binding of Panu on SmalltalkHub and it worked out of the box for the simple hello world c client/server sample translated to pharo, slightly modified to send/receive 8k byte arrays. What I saw in this experiment is that the reader process (a pharo vm) was 100% cpu bound on a core at polling the message queue in , and I saw the 0mq thread poping up in process explorer and taking less than 1% cpu during the send/receive bench (5 sec bench of BlockClosure). Beeing 100% on polling doesn't hurt me, since the sample polls in a loop. However, the raw performance numbers is far from the ZnWebSocket experiment I made, and sounds "bizarre" to me: I had 500 block/sec against 10k with ZnSockets (send only performance of Zn is 18k). I think the "pattern" used in the sample may not be the best (I have to explore other patterns of 0mq: publish/subscribe, push/pull etc. ) and I know also that in a true client server the vm could do real work instead of polling (message queuing will be handled by 0mq) so the overall system throughput should be better, but still, the difference here hurts me (roughly a x20 factor !) I would be very interested by comments or advices based on your previous experiences with 0mq (or other) ? Thanks in advance Alain Le 07/10/2014 15:41, itlists(a)schrievkrom.de a Ã©crit : > There are some good C libraries out there, which are suitable to > connect programs with each other: a good example is 0MQ. > > Marten >

Oct. 11, 2014

Re: [Pharo-users] Using a private git repository with Metacello

by Julien Delplanque

Sorry for the late response, I have been a bit busy these days, I tried this but it didn't worked.... I'll try the Dale's solution soon. However, thank you for the help ;) Julien On 09/10/14 07:09, Thierry Goubier wrote: > Hi Julien, > > it should be possible on Linux and Mac OS by loading GitFileTree and > using an url like: > 'gitfiletree://bitbucket.com/owner/reponame&protocol=git'. > > Regards, > > Thierry > > Le 08/10/2014 10:44, Julien Delplanque a Ã©crit : >> Hello, >> >> Is it possible to use Metacello to load a Pharo project from a private >> git repository hosted on bitbucket for example? If it is, how? >> >> To load project from github I use: >> >> Metacello new >> baseline: 'Project'; >> repository: 'github://owner/reponame/repository'; >> load. >> >> Is there a prefix for a git repository that is not hosted on github? >> >> Also, I think Metacello use HTTP to download the project, am I right? Is >> it possible to make it use ssh? >> >> Thanks in advance, >> >> Julien >> >> >> > >

Oct. 11, 2014

Re: [Pharo-users] Using a private git repository with Metacello

by Julien Delplanque

Thanks a lot I'll try this out! Julien On 09/10/14 18:37, Dale Henrichs wrote: > Julien, > > I recently added bitbucket:// support to metacello[1]. > > If you follow the installation instructions here[2], you can get the > support loaded into Pharo3.0. > > Dale > > [1] https://groups.google.com/forum/#!topic/metacello/0vOzvQL10cQ > [2] https://github.com/dalehenrich/metacello-work#pharo30 > > On Wed, Oct 8, 2014 at 1:44 AM, Julien Delplanque <julien(a)tamere.eu> wrote: > >> Hello, >> >> Is it possible to use Metacello to load a Pharo project from a private >> git repository hosted on bitbucket for example? If it is, how? >> >> To load project from github I use: >> >> Metacello new >> baseline: 'Project'; >> repository: 'github://owner/reponame/repository'; >> load. >> >> Is there a prefix for a git repository that is not hosted on github? >> >> Also, I think Metacello use HTTP to download the project, am I right? Is >> it possible to make it use ssh? >> >> Thanks in advance, >> >> Julien >> >>

Oct. 11, 2014

Re: [Pharo-users] About Zinc http components

by stepharo

Nick Papoulias developed Seamless because he could not fix rST (but he oversold Seamless a bit) and I asked him to do a pass on Seamless and write a documentation. Stef On 7/10/14 23:08, Alain Rastoul wrote: > This is another subject and another functionality I will need too. > > The Rst link is of interest (thank you Denis) , I was thinking > of sending command objects with Fuel as all images will have the same > classes and performance is not very important here. > I was able to load RST in Pharo3, but did not made any test yet. > Does it works with Pharo ? > > @SKrish you are right, but I want to keep as simple as possible at the > beginning and tcpip should fit for a start. > > Cheers, > > Alain > > > Le 07/10/2014 21:40, S Krish a Ã©crit : >> >> Typical issue in the EJB world : Remote Beans / Local Beans , though on >> inter process it was remote beans with its full stack RMI marshalling / >> unmarshalling. >> >> But can we not exploit shared memory and efficient Event mechanism to >> make the two process coordinate, that should be lot more efficient than >> TCP - IP / but if that performance suffices it would be fine.. >> >> >> >> >> On Tue, Oct 7, 2014 at 4:40 AM, Alain Rastoul >> <alf.mmm.cat(a)gmail.com >> <mailto:alf.mmm.cat@gmail.com>> wrote: >> >> Hi, >> I played a bit with ZnServer and other zinc components and have >> a question I can't answer myself (googling a bit didn't help >> neither), >> and I'm seeking for advice: does it makes sense to use a >> ZnServer/ZnWebSocket >> as a mechanism to transfer data between two pharo processes - in my >> case 8k ByteArray blocks ? >> Or is it a total non sense ? is it reliable ? >> First tests looks good : 18k blocks / second (145 Mb/s) on a laptop >> core i5 2.6Ghz. >> >> All comments and suggestions welcome >> >> Thanks in advance, >> >> Alain >> >> >> > > > >

Oct. 11, 2014