[Distributed_systems] week 8?

Mon Apr 6 09:10:02 CEST 2020

Hi,
I wanted to upload the task related info to SVN, but there is some material
in week 8.
I thought, I was working on week 8 :)

Where should I put these?
Regards,
Peter

On Sun, Apr 5, 2020 at 8:13 PM Lukács Dániel <dlukacs at caesar.elte.hu> wrote:

> Hi,
>
> Thank you for your answer about the plans! I think 20 minutes per task is
> the better choice, since 3x30 minutes is already 1.5 hour and then there's
> no time for demo.
>
> It will be most likely not possible for my labs to follow yours, because
> we still have to write the synchronous chat server as well.
>
> Also it was a good idea to request BEAD for yourself beforehand! On
> Friday, I wrote Artúr about adding everyone, hope he'll manage it before
> the nagybeadandó release (it's complicated because of the students
> migrating).
>
> Dániel
>
>
> On 4/5/20 12:25 PM, Grünwald Péter wrote:
>
> Hi,
>
> To be honest, I think Márk has really good tasks in this area:
> I have added an English translation to the tasks:
>
> ---
>
> Készíts olyan chat alkalmazást, amelyben a két kliensnek nem kell egymásra
> várnia soronként, hanem bármikor beszélhetnek egymáshoz, és ez azonnal
> kiíródik a másik kliensnél. `AsyncChatServer.java` és `AsyncChatClient.java`
> *Create a chat application, where the two clients don't have to wait for
> each other. Instead, they can talk to each other anytime, and their message
> immediately printed at the other client.*
> ---
>
> Készíts chat szervert, amelyhez tetszőleges számú kliens kapcsolódhat,
> illetve bármikor bonthatják is a kapcsolatot. Minden kliens először a nevét
> közli egy sorban. A kliensek bármikor beszélhessenek, ami azonnal íródjon
> ki minden kapcsolódott kliensnél. `NamedChatServer.java` és
> `NamedChatClient.java`
> *Create a chat server, where any number of clients can join, and they can
> disconnect any time. Every client first sends its name. Clients can talk
> any time, and the message of a client shall be printed out at every other
> client.*
>
> ---
>
> Adott két szerver. Az első szerver két parancssori paramétere egy cím és
> port, melyen egy második szerverhez tud csatlakozni, és névként a `server`
> szót küldi át, melyből a másik szerver tudja, hogy szerver kapcsolódott
> hozzá. A kliensek csatlakoznak tetszőlegesen egyik vagy másik szerverhez,
> melyekre üzeneteket küldenek. Ha egy kliens az üzenetét elküldte egy
> szervernek, akkor az a másik szerverhez átküldi azt, amelyik továbbítja
> azokat a hozzá csatlakozó kliensek számára. `MultiChatServer.java` és
> `MultiChatClient.java`
>
> *There are 2 servers. The first server can be started with an address and
> a port as command line argument. These arguments are used to connect to
> another server, with server as a name. The other server knows from this
> name, that a server is connected to it. Clients can connect to any of the
> servers, and send messages. When a client sends a message to server, it
> sends it to the another server, which broadcasts it to all its clients.*
>
> ---
>
> So here is my plan:
> *Please note, that my class is 10-12 Monday.*
>
> 1) Give the video to the student. Latest this evening
> 2) First exercise is the one which the video is about. *I agree with
> Tamás, that it could be homework, but I hardly think, students would be
> ready with it by tomorrow morning.*
> 3) Once this task is done, they would get the next two tasks.
> 4)Of course, there are faster and slower people in the class. I would like
> to post these tasks in BEAD. (I have already asked Artúr to create the
> group for me) I don't say, I will go through each and every solution,
> because it is a lot of time and effort. But I would like to give the
> students the feeling, that they need to work, and they get real assignments
> during the class.
> 5) And I would give 20-30 minutes for each task for them to complete. Then
> I would go to *demo mode, and show them the tricky parts.*
>
>
> *What do you think? *
>
>
>
> Regards,
> Peter
>
> On Fri, Apr 3, 2020 at 11:39 AM Lukács Dániel <dlukacs at caesar.elte.hu>
> wrote:
>
>> Hi!
>>
>> Thank you for being on time! :) I watched the video just now, I think the
>> quality is good overall! I noticed maybe a few breaks that could be edited
>> out before the final release, but let's see if the others find it
>> necessary. I appreciated the figures, and that you point to the words you
>> talk about.
>>
>> So the content is an introduction of the task of parallelizing the chat
>> server and chat client with some code examples.
>>
>> What's your plan for the students (and instructors) to do during the
>> class?
>>
>> Thanks,
>> Dániel
>>
>>
>> On 4/2/20 10:52 PM, Grünwald Péter wrote:
>>
>> Hi,
>> I have created a video. It is 10:41 minutes long.
>> I have just uploaded it in Teams.
>>
>> https://ikelte.sharepoint.com/sites/DistributedSystemsStaff2/Megosztott%20dokumentumok/General/2020-04-02%2022-34-21.mkv
>>
>>
>> Please check it, and come back with comments. I am sure, you will have
>> some :)
>> I would like to thank a lot to Márk, as I used his implementations for
>> the demonstration. Thanks! :)
>>
>> Let's collect the comments, and then I can create a new video if needed.
>> Regards,
>> Peter
>>
>> On Thu, Apr 2, 2020 at 9:45 PM Lukács Dániel <dlukacs at caesar.elte.hu>
>> wrote:
>>
>>> Hi!
>>>
>>> Superb! It should be Hungarian. I will translate it to Charles.
>>>
>>> Dániel
>>>
>>>
>>> On 4/2/20 9:42 PM, Grünwald Péter wrote:
>>>
>>> Hi,
>>> Sorry, that I forgot to ask:
>>> What should be the language of the video?
>>> Hungarian or English?
>>>
>>> I am about to start the recording :)
>>>
>>> Regards,
>>> Peter
>>>
>>> On Thu, Apr 2, 2020 at 11:37 AM Lukács Dániel <dlukacs at caesar.elte.hu>
>>> wrote:
>>>
>>>> Hi Péter,
>>>>
>>>> Thank you, that would be perfect! I think the easiest way to share a
>>>> working copy internally is to simply upload it as a file to the Staff team.
>>>> Each of us already has access there, and it's very easy to reupload new
>>>> versions if needed.
>>>>
>>>> Dániel
>>>>
>>>>
>>>> On 4/2/20 8:27 AM, Grünwald Péter wrote:
>>>>
>>>> Hi,
>>>> I will be able to work on my video today evening, so most probably it
>>>> will be ready for tomorrow morning, or late this night.
>>>>
>>>> The reason I am not really available on Team is, that at Ericsson we
>>>> also use Teams, and I cannot be logged in with 2 different accounts. So I
>>>> always need to swap.
>>>>
>>>> Regards,
>>>> Peter
>>>>
>>>> On Mon, Mar 30, 2020 at 8:30 PM Török Márk <tmark at caesar.elte.hu>
>>>> wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> Do we have a streaming server? Where can we store these videos and how
>>>>> can we make them available for students?
>>>>>
>>>>> Thank you,
>>>>> Mark
>>>>>
>>>>>
>>>>> 2020 Március 30, Hétfő 14:25 CEST dátummal, Lukács Dániel <
>>>>> dlukacs at caesar.elte.hu> ezt írta:
>>>>>
>>>>> > Hi!
>>>>> >
>>>>> > That's awesome! :) I think most of us are new to this, so it's still
>>>>> all
>>>>> > experimental.
>>>>> >
>>>>> > The length should be around 20 minutes. Maybe less, but definitely
>>>>> not
>>>>> > more.
>>>>> >
>>>>> > I guess the topic is mostly up to you (until it's multithreaded
>>>>> servers
>>>>> > :)), but if you need a plan:
>>>>> >
>>>>> >   * The *video* could be some theory intro and a demo about moving
>>>>> from
>>>>> >     iterative server to multithreaded server. (With iterative server,
>>>>> >     one client has to wait until the other client finished
>>>>> >     communication. Threads can solve this problem.) If you don't
>>>>> want to
>>>>> >     code everything from scratch, it may be a good idea to create a
>>>>> >     supplementary handout and refer to that in the video.
>>>>> >   * During class they could implement Robi's chat server and chat
>>>>> client
>>>>> >     during *class*. They will need a detailed assignment text for
>>>>> this.
>>>>> >     As Robi said, a demo (or written instruction) could be necessary
>>>>>
>>>>> >     here if there are difficult or unexpected or tricky operations.
>>>>> >   * Finally, they could solve Robi's HTTP server for *homework*. They
>>>>> >     will need a detailed assignment text for this.
>>>>> >
>>>>> > If they have this down, then week 9 could be about implementing
>>>>> > ping-pong and avoiding deadlocks.
>>>>> >
>>>>> > Is it realistic for you to finish the video until Thursday night? We
>>>>> > could then review it on Friday and publish it, so students would
>>>>> have
>>>>> > time to watch it during the weekend.
>>>>> >
>>>>> > Bests,
>>>>> >
>>>>> > Dániel
>>>>> >
>>>>> >
>>>>> > On 3/30/20 10:17 AM, Grünwald Péter wrote:
>>>>> > > Sziasztok!
>>>>> > >
>>>>> > > Hát ilyen videót még nem csináltam, de megpróbálom.
>>>>> > > Milyen hosszú legyen?
>>>>> > > Milyen témákat tárgyaljon pontosan?
>>>>> > >
>>>>> > > Üdv,
>>>>> > > Péter
>>>>> > >
>>>>> > > On Sun, Mar 29, 2020 at 1:16 PM Lukács Dániel <
>>>>> dlukacs at caesar.elte.hu
>>>>> > > <mailto:dlukacs at caesar.elte.hu>> wrote:
>>>>> > >
>>>>> > >     Dear All,
>>>>> > >
>>>>> > >     No one signed up yet for preparing teaching materials for week
>>>>> 8 (the
>>>>> > >     one starting on April 6). The topic is Multithreaded
>>>>> client-server 1.
>>>>> > >
>>>>> > >     I would do it because new topics are usually easier, but I'm
>>>>> already
>>>>> > >     working on the large assignment :(
>>>>> > >
>>>>> > >     Péter, is it possible for you to prepare the materials for
>>>>> week 8?
>>>>> > >
>>>>> > >     Dániel
>>>>> > >
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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