Minor changes

Turn question 1 in TSP to example
Add solution to exercise 1 in LEQ notebook
2026-07-01 19:10:34 +02:00 · 2024-01-12 11:41:40 +01:00 · 2023-11-27 11:51:08 +01:00 · 2023-11-27 11:50:14 +01:00 · 2023-11-16 12:50:09 +01:00 · 2023-11-14 11:16:37 +01:00
123 changed files with 159035 additions and 168950 deletions
@@ -0,0 +1,64 @@
+name: CI
+on:
+  push:
+    branches:
+      - main
+    tags: ['*']
+  pull_request:
+concurrency:
+  # Skip intermediate builds: always.
+  # Cancel intermediate builds: only if it is a pull request build.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+jobs:
+  test:
+    name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.9'
+        os:
+          - ubuntu-latest
+        arch:
+          - x64
+    steps:
+      - uses: actions/checkout@v3
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+          arch: ${{ matrix.arch }}
+      - uses: julia-actions/cache@v1
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1
+  docs:
+    name: Documentation
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      statuses: write
+    steps:
+      - uses: actions/checkout@v3
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: '1'
+      - name: Set up Python
+        uses: actions/setup-python@v4.7.0
+        with:
+          python-version: '3.9'
+      - name: Install nbconvert
+        run: |
+          python -m pip install jupyter nbconvert 
+      - name: Configure doc environment
+        run: |
+          julia --project=docs/ -e '
+            using Pkg
+            Pkg.develop(PackageSpec(path=pwd()))
+            Pkg.instantiate()'
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-docdeploy@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+
@@ -0,0 +1,8 @@
+*.swp
+Manifest.toml
+.ipynb_checkpoints/
+.vscode/
+docs/src/notebooks/
+docs/src/notebook-html/
+*.code-workspace
+*.DS_Store
@@ -0,0 +1,395 @@
+Attribution 4.0 International
+
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+
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@@ -0,0 +1,8 @@
+name = "XM_40017"
+uuid = "97f213cd-d64a-481d-bc9d-afa871b8c535"
+authors = ["Francesc Verdugo <f.verdugo.rojano@vu.nl>"]
+version = "0.1.0"
+
+[deps]
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+Glob = "c27321d9-0574-5035-807b-f59d2c89b15c"
@@ -0,0 +1,6 @@
+# XM_40017
+Jupyter notebook scripts for the course Programming Large-Scale Parallel Systems (XM_40017) at Vrije Universiteit Amsterdam. 
+
+- [**Go to webpage**](https://fverdugo.github.io/XM_40017/dev)
+
+NB: The `notebooks` folder contains material under construction. The material that is ready for study is the one accessible from the website. The material will be added incrementally to the website as the course advances.
@@ -1 +0,0 @@
-{"documenter":{"julia_version":"1.10.5","generation_timestamp":"2024-10-07T12:14:49","documenter_version":"1.7.0"}}
@@ -1,84 +0,0 @@
-// Small function to quickly swap out themes. Gets put into the <head> tag..
-function set_theme_from_local_storage() {
-  // Initialize the theme to null, which means default
-  var theme = null;
-  // If the browser supports the localstorage and is not disabled then try to get the
-  // documenter theme
-  if (window.localStorage != null) {
-    // Get the user-picked theme from localStorage. May be `null`, which means the default
-    // theme.
-    theme = window.localStorage.getItem("documenter-theme");
-  }
-  // Check if the users preference is for dark color scheme
-  var darkPreference =
-    window.matchMedia("(prefers-color-scheme: dark)").matches === true;
-  // Initialize a few variables for the loop:
-  //
-  //  - active: will contain the index of the theme that should be active. Note that there
-  //    is no guarantee that localStorage contains sane values. If `active` stays `null`
-  //    we either could not find the theme or it is the default (primary) theme anyway.
-  //    Either way, we then need to stick to the primary theme.
-  //
-  //  - disabled: style sheets that should be disabled (i.e. all the theme style sheets
-  //    that are not the currently active theme)
-  var active = null;
-  var disabled = [];
-  var primaryLightTheme = null;
-  var primaryDarkTheme = null;
-  for (var i = 0; i < document.styleSheets.length; i++) {
-    var ss = document.styleSheets[i];
-    // The <link> tag of each style sheet is expected to have a data-theme-name attribute
-    // which must contain the name of the theme. The names in localStorage much match this.
-    var themename = ss.ownerNode.getAttribute("data-theme-name");
-    // attribute not set => non-theme stylesheet => ignore
-    if (themename === null) continue;
-    // To distinguish the default (primary) theme, it needs to have the data-theme-primary
-    // attribute set.
-    if (ss.ownerNode.getAttribute("data-theme-primary") !== null) {
-      primaryLightTheme = themename;
-    }
-    // Check if the theme is primary dark theme so that we could store its name in darkTheme
-    if (ss.ownerNode.getAttribute("data-theme-primary-dark") !== null) {
-      primaryDarkTheme = themename;
-    }
-    // If we find a matching theme (and it's not the default), we'll set active to non-null
-    if (themename === theme) active = i;
-    // Store the style sheets of inactive themes so that we could disable them
-    if (themename !== theme) disabled.push(ss);
-  }
-  var activeTheme = null;
-  if (active !== null) {
-    // If we did find an active theme, we'll (1) add the theme--$(theme) class to <html>
-    document.getElementsByTagName("html")[0].className = "theme--" + theme;
-    activeTheme = theme;
-  } else {
-    // If we did _not_ find an active theme, then we need to fall back to the primary theme
-    // which can either be dark or light, depending on the user's OS preference.
-    var activeTheme = darkPreference ? primaryDarkTheme : primaryLightTheme;
-    // In case it somehow happens that the relevant primary theme was not found in the
-    // preceding loop, we abort without doing anything.
-    if (activeTheme === null) {
-      console.error("Unable to determine primary theme.");
-      return;
-    }
-    // When switching to the primary light theme, then we must not have a class name
-    // for the <html> tag. That's only for non-primary or the primary dark theme.
-    if (darkPreference) {
-      document.getElementsByTagName("html")[0].className =
-        "theme--" + activeTheme;
-    } else {
-      document.getElementsByTagName("html")[0].className = "";
-    }
-  }
-  for (var i = 0; i < document.styleSheets.length; i++) {
-    var ss = document.styleSheets[i];
-    // The <link> tag of each style sheet is expected to have a data-theme-name attribute
-    // which must contain the name of the theme. The names in localStorage much match this.
-    var themename = ss.ownerNode.getAttribute("data-theme-name");
-    // attribute not set => non-theme stylesheet => ignore
-    if (themename === null) continue;
-    // we'll disable all the stylesheets, except for the active one
-    ss.disabled = !(themename == activeTheme);
-  }
-}
-set_theme_from_local_storage();
@@ -1,52 +0,0 @@
-function maybeAddWarning() {
-  // DOCUMENTER_NEWEST is defined in versions.js, DOCUMENTER_CURRENT_VERSION and DOCUMENTER_STABLE
-  // in siteinfo.js.
-  // If either of these are undefined something went horribly wrong, so we abort.
-  if (
-    window.DOCUMENTER_NEWEST === undefined ||
-    window.DOCUMENTER_CURRENT_VERSION === undefined ||
-    window.DOCUMENTER_STABLE === undefined
-  ) {
-    return;
-  }
-
-  // Current version is not a version number, so we can't tell if it's the newest version. Abort.
-  if (!/v(\d+\.)*\d+/.test(window.DOCUMENTER_CURRENT_VERSION)) {
-    return;
-  }
-
-  // Current version is newest version, so no need to add a warning.
-  if (window.DOCUMENTER_NEWEST === window.DOCUMENTER_CURRENT_VERSION) {
-    return;
-  }
-
-  // Add a noindex meta tag (unless one exists) so that search engines don't index this version of the docs.
-  if (document.body.querySelector('meta[name="robots"]') === null) {
-    const meta = document.createElement("meta");
-    meta.name = "robots";
-    meta.content = "noindex";
-
-    document.getElementsByTagName("head")[0].appendChild(meta);
-  }
-
-  const div = document.createElement("div");
-  div.classList.add("outdated-warning-overlay");
-  const closer = document.createElement("button");
-  closer.classList.add("outdated-warning-closer", "delete");
-  closer.addEventListener("click", function () {
-    document.body.removeChild(div);
-  });
-  const href = window.documenterBaseURL + "/../" + window.DOCUMENTER_STABLE;
-  div.innerHTML =
-    'This documentation is not for the latest stable release, but for either the development version or an older release.<br><a href="' +
-    href +
-    '">Click here to go to the documentation for the latest stable release.</a>';
-  div.appendChild(closer);
-  document.body.appendChild(div);
-}
-
-if (document.readyState === "loading") {
-  document.addEventListener("DOMContentLoaded", maybeAddWarning);
-} else {
-  maybeAddWarning();
-}
@@ -1 +0,0 @@
-var DOCUMENTER_CURRENT_VERSION = "dev";
@@ -0,0 +1,8 @@
+build/
+site/
+src/notebook-output/
+src/notebooks/
+Manifest.toml
+src/*.ipynb
+src/*/index.html
+src/*.md
@@ -0,0 +1,4 @@
+[deps]
+Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+Glob = "c27321d9-0574-5035-807b-f59d2c89b15c"
+XM_40017 = "97f213cd-d64a-481d-bc9d-afa871b8c535"
@@ -0,0 +1,137 @@
+using XM_40017
+using Documenter
+using Glob 
+
+const md_nb_template = """
+```@meta
+EditURL = "https://github.com/fverdugo/XM_40017/blob/main/notebooks/SCRIPT_NAME.ipynb"
+```
+
+```@raw html
+<div class="admonition is-success">
+    <header class="admonition-header">Tip</header>
+    <div class="admonition-body">
+        <ul>
+            <li>
+                Download this notebook and run it locally on your machine [recommended]. Click <a href="https://www.francescverdugo.com/XM_40017/dev/SCRIPT_NAME.ipynb" download>here</a>.
+            </li>
+        </ul>
+    </div>
+</div>
+```
+
+```@raw html
+<iframe id="notebook" src="../SCRIPT_NAME_src/" style="width:100%"></iframe>
+<script>
+  document.addEventListener('DOMContentLoaded', function(){
+    var myIframe = document.getElementById("notebook");
+    iFrameResize({log:true}, myIframe);	
+});
+</script>
+```
+"""
+
+function convert_embedded_img_to_base64(notebook_path)
+    doc = open(io->read(io, String), notebook_path)
+    # Regex matching: extract filename and base64 code
+    regex = r"attachments\\\":\s*\{\s*\\\"(?<filename>.*).png\\\":\s*\{\s*\\\"image/png\\\":\s*\\\"(?<base64code>.*)\\\""
+    res = eachmatch(regex, doc)
+    matches = collect(res)
+    # Replace img src with base64 code
+    for m in matches
+        filename = m[:filename]
+        base64 = m[:base64code]
+        doc = replace(doc, "attachment:$filename.png" => "data:image/png;base64,$base64")
+    end
+    filename = splitpath(notebook_path)[end]  
+    open("docs/src/$filename","w") do f
+        write(f, doc)
+    end
+end
+
+# Write markdown file that includes notebook html
+function create_md_nb_file( filename )
+    global md_nb_template;
+    content = replace(md_nb_template, "SCRIPT_NAME" => filename)
+    md_path = joinpath(@__DIR__, "src", filename * ".md" ) 
+    open(md_path, "w") do md_file
+        write(md_file, content)
+    end
+    return md_path
+end
+
+# Convert to html using nbconvert
+function convert_notebook_to_html(notebook_path; output_name,output_dir, theme = "light")
+    command_jup = "jupyter"
+    command_nbc = "nbconvert"
+    output_format = "--to=html"
+    theme = "--theme=$theme"
+    output = "--output=$output_name"
+    output_dir = "--output-dir=$output_dir"
+    infile = notebook_path
+    run(`$command_jup $command_nbc $output_format $output $output_dir $theme $infile`)
+end
+
+# Modify html contents
+function modify_notebook_html( html_filepath )
+    content = open( html_filepath, "r" ) do html_file 
+        read( html_file, String )
+    end
+    # Resize iframes using IframeResizer
+    content = replace(content, 
+        r"(<script\b[^>]*>[\s\S]*?<\/script>\K)" => 
+        s"\1\n\t<script src='../assets/iframeResizer.contentWindow.min.js'></script>\n";
+        count = 1
+    )
+    open( html_filepath, "w" ) do html_file
+        write( html_file, content )
+    end
+    return nothing
+end
+
+
+# Loop over notebooks and generate html and markdown 
+repo_root = joinpath(@__DIR__,"..") |> normpath
+notebook_files = glob("*.ipynb", joinpath(repo_root,"notebooks/"))
+for filepath in notebook_files
+    #continue
+    convert_embedded_img_to_base64(filepath)
+    filename_with_ext = splitpath(filepath)[end]    
+    filename = splitext(filename_with_ext)[1]
+    pth = mkpath(joinpath(repo_root,"docs","src",filename*"_src"))
+    create_md_nb_file(filename)
+    convert_notebook_to_html("docs/src/$filename_with_ext", output_dir=pth, output_name = "index")
+    modify_notebook_html("docs/src/$(filename)_src/index.html")
+end
+
+makedocs(;
+    modules=[XM_40017],
+    authors="Francesc Verdugo <f.verdugo.rojano@vu.nl>",
+    repo="https://github.com/fverdugo/XM_40017/blob/{commit}{path}#{line}",
+    sitename="XM_40017",    
+    format=Documenter.HTML(;
+        assets = ["assets/favicon.ico", "assets/iframeResizer.min.js", "assets/custom.css"],
+        prettyurls=get(ENV, "CI", "false") == "true",
+        canonical="https://fverdugo.github.io/XM_40017",
+        edit_link="main",),
+    pages=["Home" => "index.md","Getting started"=>"getting_started_with_julia.md",
+           "Notebooks"=>[
+                         "Julia Basics" => "julia_basics.md",
+                         "Asynchronous programming in Julia" => "julia_async.md",
+                         "Distributed computing in Julia" => "julia_distributed.md",
+                         "Distributed computing with MPI" => "mpi_tutorial.md",
+                         "Matrix-matrix multiplication"=>"matrix_matrix.md",
+                         "Jacobi method" => "jacobi_method.md",
+                         "All pairs of shortest paths" => "asp.md",
+                         "Gaussian elimination" => "LEQ.md",
+                         "Traveling salesperson problem" => "tsp.md",
+                         "Partial differential equations" => "pdes.md",
+                         ],
+          "Solutions" => "solutions_for_all_notebooks.md",
+          ],
+)
+
+deploydocs(;
+    repo="github.com/fverdugo/XM_40017",
+    devbranch="main",
+)
@@ -0,0 +1,370 @@
+# Getting started
+
+
+## Introduction
+
+The programming of this course will be done using the [Julia programming language](https://julialang.org). Thus, we start by explaining how to get up and running with Julia. After studying this page, you will be able to:
+
+- Use the Julia REPL,
+- Run serial and parallel code,
+- Install and manage Julia packages.
+
+## Why Julia?
+
+Courses related with high-performance computing (HPC) often use languages such as C, C++, or Fortran. We use Julia instead to make the course accessible to a wider set of students, including the ones that have no experience with 
+C/C++ or Fortran, but are willing to learn parallel programming. Julia is a relatively new programming language specifically designed for scientific computing. It combines a high-level syntax close to interpreted languages like Python with the performance of compiled languages like C, C++, or Fortran. Thus, Julia will allow us to write efficient parallel algorithms with a syntax that is convenient in a teaching setting. In addition, Julia provides easy access to different programming models to write distributed algorithms, which will be useful to learn and experiment with them.
+
+!!! tip
+    You can run the code [in this link](https://github.com/JuliaAcademy/JuliaTutorials/blob/724e15a350d150a9773afe51a3830709dbed422f/introductory-tutorials/intro-to-julia/09.%20Julia%20is%20fast.ipynb) to learn how Julia compares to other languages (C and Python) in terms of performance.
+
+
+## Installing Julia
+
+This is a tutorial-like page. Follow these steps before you continue reading the document.
+
+- Download and install Julia from [julialang.org](https://julialang.org);
+- Follow the specific instructions for your operating system: [Windows](https://julialang.org/downloads/platform/#windows), [MacOS](https://julialang.org/downloads/platform/#macos), or [Linux](https://julialang.org/downloads/platform/#linux_and_freebsd)
+- Download and install [VSCode and its Julia extension](https://www.julia-vscode.org/docs/dev/gettingstarted/);
+
+
+## The Julia REPL
+
+### Starting Julia
+
+There are several ways of opening Julia depending on your operating system and your IDE, but it is usually as simple as launching the Julia app. With VSCode, open a folder (File > Open Folder). Then,  press `Ctrl`+`Shift`+`P` to open the command bar, and execute `Julia: Start REPL`. If this does not work, make sure you have the Julia extension for VSCode installed. Independently of the method you use, opening Julia results in a window with some text ending with:
+
+```
+julia>
+```
+
+You have just opened the Julia *read-evaluate-print loop*, or simply the Julia *REPL*. Congrats! You will spend most of time using the REPL, when working in Julia. The REPL is a console waiting for user input. Just as in other consoles, the string of text right before the input area (`julia>` in the case) is called the *command prompt* or simply the *prompt*.
+
+### Basic usage
+
+The usage of the REPL is as follows:
+- You write some input
+- press enter
+- you get the output
+
+For instance, try this
+
+```julia
+julia> 1 + 1
+```
+
+A "Hello world" example looks like this in Julia
+
+```julia
+julia> println("Hello, world!")
+```
+
+Try to run it in the REPL.
+
+### Help mode
+
+Curious about what the function `println` does? Enter into *help* mode to look into the documentation. This is done by typing a question mark (`?`) into the input field:
+
+```julia
+julia> ?
+```
+
+After typing `?`, the command prompt changes to `help?>`. It means we are in help mode. Now, we can type a function name to see its documentation.
+
+```julia
+help?> println
+```
+
+### Package and shell modes
+
+The REPL comes with two more modes, namely *package* and *shell* modes. To enter package mode type
+
+```julia
+julia> ]
+```
+
+Package mode is used to install and manage packages. We are going to discuss the package mode in greater detail later. To return back to normal mode press the backspace key several times.
+
+To enter shell mode type semicolon (`;`)
+```julia
+julia> ;
+```
+The prompt should have changed to `shell>` indicating that we are in shell mode. Now you can type commands that you would normally do on your system command line. For instance,
+
+```julia
+shell> ls
+```
+will display the contents of the current folder in Mac or Linux. Using shell mode in Windows is not straightforward, and thus not recommended for beginners.
+
+
+
+## Running Julia code
+
+### Running more complex code
+
+Real-world Julia programs are not typed in the REPL in practice. They are written in one or more files and *included* in the REPL. To try this, create a new file called `hello.jl`, write the code of the "Hello world" example above, and save it. If you are using VSCode, you can create the file using File > New File > Julia File. Once the file is saved with the name `hello.jl`, execute it as follows
+
+```julia
+julia> include("hello.jl")
+```
+
+!!! warning
+    Make sure that the file `"hello.jl"` is located in the current working directory of your Julia session. You can query the current directory with function `pwd()`. You can change to another directory with function `cd()` if needed.  Also, make sure that the file extension is `.jl`.
+
+The recommended way of running Julia code is using the REPL as we did. But it is also possible to run code directly from the system command line. To this end, open a terminal and call Julia followed by the path to the file containing the code you want to execute.
+
+```
+$ julia hello.jl
+```
+
+The previous line assumes that you have Julia properly installed in the system and that it's usable from the terminal. In UNIX systems (Linux and Mac), the Julia binary needs to be in one of the directories listed in the `PATH` environment variable. To check that Julia is properly installed, you can use
+
+```
+$ julia --version
+```
+
+If this runs without error and you see a version number, you are good to go!
+
+
+!!! note
+    In this tutorial, when a code snipped starts with `$`, it should be run in the terminal. Otherwise, the code is to be run in the Julia REPL.
+
+!!! tip
+    Avoid calling Julia code from the terminal, use the Julia REPL instead! Each time you call Julia from the terminal, you start a fresh Julia session and Julia will need to compile your code from scratch. This can be time consuming for large projects. In contrast, if you execute code in the REPL, Julia will compile code incrementally, which is much faster. Running code in a cluster (like in DAS-5 for the Julia assignment) is among the few situations you need to run Julia code from the terminal.
+
+### Running parallel code
+
+
+Since we are in a parallel computing course, let's run a parallel "Hello world" example in Julia. Open a Julia REPL and write
+
+```julia
+julia> using Distributed
+julia> @everywhere println("Hello, world! I am proc $(myid()) from $(nprocs())")
+```
+
+Here, we are using the `Distributed` package, which is part of the Julia standard library that provides distributed memory parallel support. The code prints the process id and the number of processes in the current Julia session.
+
+You will probably only see output from 1 process. We need to add more processes to run the example in parallel. This is done with the `addprocs` function.
+
+```julia
+julia> addprocs(3)
+```
+We have added 3 new processes. Plus the old one, we have 4 processes. Run the code again.
+
+```julia
+julia> @everywhere println("Hello, world! I am proc $(myid()) from $(nprocs())")
+```
+
+Now, you should see output from 4 processes.
+
+It is possible to specify the number of processes when starting Julia from the terminal with the `-p` argument (useful, e.g., when running in a cluster).  If you launch Julia from the terminal as
+
+```
+$ julia -p 3
+```
+and then run
+
+```julia
+julia> @everywhere println("Hello, world! I am proc $(myid()) from $(nprocs())")
+```
+
+You should get output from 4 processes as before.
+
+### Installing packages
+
+One of the most useful features of Julia is its package manager. It allows one to install Julia packages in a straightforward and platform independent way. To illustrate this, let us consider the following parallel "Hello world" example. This example uses the Message Passing Interface (MPI). We will learn more about MPI later in the course.
+
+
+Copy the following block of code into a new file named `"hello_mpi.jl"`
+
+```julia
+# file hello_mpi.jl
+using MPI
+MPI.Init()
+comm = MPI.COMM_WORLD
+rank = MPI.Comm_rank(comm)
+nranks = MPI.Comm_size(comm)
+println("Hello world, I am rank $rank of $nranks")
+```
+
+As you can see from this example, one can access MPI from Julia in a clean way, without type annotations and other complexities of C/C++ code.
+
+Now, run the file from the REPL
+```julia
+julia> include("hello_mpi.jl")
+```
+
+It probably didn't work, right? Read the error message and note that the MPI package needs to be installed to run this code.
+
+To install a package, we need to enter *package* mode. Remember that we entered into help mode by typing `?`. Package mode is activated by typing `]` : 
+```julia
+julia> ]
+```
+At this point, the prompt should have changed to `(@v1.8) pkg>` indicating that we are in package mode. The text between the parentheses indicates which is the active *project*, i.e., where packages are going to be installed. In this case, we are working with the global project associated with our Julia installation (which is Julia 1.8 in this example, but it can be another version in your case).
+
+To install the MPI package, type
+```julia
+(@v1.8) pkg> add MPI
+```
+Congrats, you have installed MPI!
+
+!!! note
+    Many Julia package names end with `.jl`. This is just a way of signaling that a package is written in Julia. When using such packages, the `.jl` needs to be omitted. In this case, we have installed the `MPI.jl` package even though we have only typed `MPI` in the REPL.
+
+!!! note
+    The package you have installed is the Julia interface to MPI, called  `MPI.jl`. Note that it is not a MPI library by itself. It is just a thin wrapper between MPI and Julia. To use this interface, you need an actual MPI library installed in your system such as OpenMPI or MPICH. Julia downloads and installs a MPI library for you, but it is also possible to use a MPI library already available in your system. This is useful, e.g., when running on HPC clusters. See the [documentation](https://juliaparallel.org/MPI.jl/stable/configuration/) of `MPI.jl` for further details.
+
+To check that the package was installed properly, exit package mode by pressing the backspace key several times, and run it again
+
+```julia
+julia> include("hello_mpi.jl")
+```
+
+Now, it should work, but you probably get output from a single MPI rank only.
+
+### Running MPI code
+
+To run MPI applications in parallel, you need a launcher like `mpiexec`. MPI codes written in Julia are not an exception to this rule. From the system terminal, you can run
+```
+$ mpiexec -np 4 julia hello_mpi.jl
+```
+But it will probably not work since the version of `mpiexec` needs to match with the MPI version we are using from Julia. Don't worry if you could not make it work! A more elegant way to run MPI code is from the Julia REPL directly, by using these commands:
+```julia
+julia> using MPI
+julia> mpiexec(cmd->run(`$cmd -np 4 julia hello_mpi.jl`))
+```
+
+Now, you should see output from 4 ranks.
+
+## Package manager
+
+### Installing packages locally
+
+We have installed the `MPI` package globally and it will be available in all Julia sessions. However, in some situations, we want to work with different versions of the same package or to install packages in an isolated way to avoid potential conflicts with other packages. This can be done by using local projects.
+
+A project is simply a folder in the hard disk. To use a particular folder as your project, you need to *activate* it. This is done by entering package mode and using the `activate` command followed by the path to the folder you want to activate.
+```julia
+(@v1.8) pkg> activate .
+```
+ The previous command will activate the current working directory. Note that the dot `.` is indeed the path to the current folder.
+
+The prompt has changed to `(lessons) pkg>` indicating that we are in the project within the `lessons` folder. The particular folder name can be different in your case.
+
+!!! tip
+    You can activate a project directly when opening Julia from the terminal using the `--project` flag. The command `$ julia --project=.` will open Julia and activate a project in the current directory. You can also achieve the same effect by setting the environment variable  `JULIA_PROJECT` with the path of the folder you want to activate.
+
+!!! note
+    The active project folder and the current working directory are two independent concepts! For instance,  `(@v1.8) pkg> activate folderB` and then `julia> cd("folderA")`, will activate the project in `folderB` and change the current working directory to `folderA`.
+
+At this point all package-related operations will be local to the new project. For instance, install the `DataFrames` package.
+
+```julia
+(lessons) pkg> add DataFrames
+```
+Use the package to check that it is installed
+
+```julia
+julia> using DataFrames
+julia> DataFrame(a=[1,2],b=[3,4])
+```
+Now, we can return to the global project to check that `DataFrames` has not been installed there. To return to the global environment, use `activate` without a folder name.
+
+```julia
+(lessons) pkg> activate
+```
+The prompt is again `(@v1.8) pkg>`
+
+Now, try to use `DataFrames`.
+
+```julia
+julia> using DataFrames
+julia> DataFrame(a=[1,2],b=[3,4])
+```
+You should get an error or a warning unless you already had `DataFrames` installed globally.
+
+### Project and Manifest files
+
+The information about a project is stored in two files `Project.toml` and `Manifest.toml`.
+
+- `Project.toml` contains the packages explicitly installed (the direct dependencies)
+
+- `Manifest.toml` contains direct and indirect dependencies along with the concrete version of each package.
+
+
+In other words, `Project.toml` contains the packages relevant for the user, whereas `Manifest.toml` is the detailed snapshot of all dependencies. The `Manifest.toml` can be used to reproduce the same environment in another machine.
+
+You can see the path to the current `Project.toml` file by using the `status` operator (or `st` in its short form) while in package mode
+
+```julia
+(@v1.8) pkg> status
+```
+
+The information about the `Manifest.toml` can be inspected by passing the `-m` flag.
+
+```julia
+(@v1.8) pkg> status -m
+```
+
+### Installing packages from a project file
+
+Project files can be used to install lists of packages defined by others. E.g., to install all the dependencies of a Julia application.
+
+Assume that a colleague has sent to you a `Project.toml` file with this content:
+
+```
+[deps]
+BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
+DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
+MPI = "da04e1cc-30fd-572f-bb4f-1f8673147195"
+```
+
+Copy the contents of previous code block into a file called  `Project.toml` and place it in an empty folder named `newproject`. It is important that the file is named `Project.toml`. You can create a new folder from the REPL with
+
+```julia
+julia> mkdir("newproject")
+```
+
+To install all the packages registered in this file you need to activate the folder containing your `Project.toml` file
+```julia
+(@v1.8) pkg> activate newproject
+```
+and then *instantiating* it
+```julia
+(newproject) pkg> instantiate
+```
+
+The instantiate command will download and install all listed packages and their dependencies in just one click.
+
+### Getting help in package mode
+
+You can get help about a particular package operator by writing `help` in front of it
+
+```julia
+(@v1.8) pkg> help activate
+```
+
+You can get an overview of all package commands by typing `help` alone
+```julia
+(@v1.8) pkg> help
+```
+
+### Package operations in Julia code
+
+In some situations it is required to use package commands in Julia code, e.g., to automatize installation and deployment of Julia applications. This can be done using the `Pkg` package. For instance
+
+```julia
+julia> using Pkg
+julia> Pkg.status()
+```
+is equivalent to calling `status` in package mode.
+```julia
+(@v1.8) pkg> status
+```
+
+## Conclusion
+
+We have learned the basics of how to work with Julia. If you want to further dig into the topics we have covered here, you can take a look at the following links:
+
+- [Julia Manual](https://docs.julialang.org/en/v1/manual/getting-started/)
+- [Package manager](https://pkgdocs.julialang.org/v1/getting-started/)
+
+
@@ -0,0 +1,57 @@
+```@meta
+CurrentModule = XM_40017
+```
+# Programming Large-Scale Parallel Systems (XM_40017)
+
+Welcome to the interactive lecture notes of the [Programming Large-Scale Parallel Systems course](https://studiegids.vu.nl/EN/courses/2023-2024/XM_40017#/) at [VU Amsterdam](https://vu.nl)!
+
+## What
+
+This page contains part of the course material of the Programming Large-Scale Parallel Systems course at VU Amsterdam.
+We provide several lecture notes in jupyter notebook format, which will help you to learn how to design, analyze, and program parallel algorithms on multi-node computing systems.
+Further information about the course is found in the study guide
+([click here](https://studiegids.vu.nl/EN/courses/2023-2024/XM_40017#/)) and our Canvas page (for registered students).
+
+!!! note
+    Material will be added incrementally to the website as the course advances.
+
+!!! warning
+    This page will eventually contain only a part of the course material. The rest will be available on Canvas. In particular, **the material in this public webpage does not fully cover all topics in the final exam**.
+
+## How to use this page
+
+You have two main ways of studying the notebooks:
+
+- Download the notebooks and run them locally on your computer (recommended). At each notebook page you will find a green box with links to download the notebook.
+- You also have the static version of the notebooks displayed in this webpage for quick reference.
+
+## How to run the notebooks locally
+
+To run a notebook locally follow these steps:
+
+- Install Julia (if not done already). More information in [Getting started](@ref).
+- Download the notebook.
+- Launch Julia. More information in [Getting started](@ref).
+- Execute these commands in the Julia command line:
+
+```
+julia> using Pkg
+julia> Pkg.add("IJulia")
+julia> using IJulia
+julia> notebook()
+```
+- These commands will open a jupyter in your web browser. Navigate in jupyter to the notebook file you have downloaded and open it.
+
+## Authors
+
+This material is created by [Francesc Verdugo](https://github.com/fverdugo/) with the help of [Gelieza Kötterheinrich](https://www.linkedin.com/in/gelieza-k/). Part of the notebooks are based on the course slides by [Henri Bal](https://www.vuhpdc.net/henri-bal/).
+
+
+## License
+
+All material on this page that is original to this course may be used under a [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) license.
+
+
+## Acknowledgment
+
+This page was created with the support of the Faculty of Science of [Vrije Universiteit Amsterdam](https://vu.nl) in the framework of the project "Interactive lecture notes and exercises for the Programming Large-Scale Parallel Systems course" funded by the "Innovation budget BETA 2023 Studievoorschotmiddelen (SVM) towards Activated Blended Learning".
@@ -0,0 +1,270 @@
+# Solutions
+
+## Julia Basics
+
+### NB1-Q1
+
+In the first, line we assign a variable to a value. In the second line, we assign another variable to the same value. Thus,we have 2 variables associated with the same value. In line 3, we associate `y` to a new value (re-assignment). Thus, we have 2 variables associated with 2 different values. Variable `x` is still associated with its original value. Thus, the value at the final line is `x=1`.
+
+### NB1-Q2
+
+It will be `1` for very similar reasons as in the previous questions: we are reassigning a local variable, not the global variable defined outside the function.
+
+### NB1-Q3
+
+It will be `6`. In the returned function `f2`, `x` is equal to `2`. Thus, when calling `f2(3)` we compute `2*3`.
+
+
+### Exercise 1
+
+```julia
+function ex1(a)
+    j = 1
+    m = a[j]
+    for (i,ai) in enumerate(a)
+        if m < ai
+            m = ai
+            j = i
+        end
+    end
+    (m,j)
+end
+```
+
+### Exercise 2
+
+```julia
+ex2(f,g) = x -> f(x) + g(x)
+```
+
+### Exercise 3
+
+```julia
+using GLMakie
+max_iters = 100
+n = 1000
+x = LinRange(-1.7,0.7,n)
+y = LinRange(-1.2,1.2,n)
+heatmap(x,y,(i,j)->mandel(i,j,max_iters))
+```
+
+## Asynchronous programming in Julia
+
+### NB2-Q1
+
+Evaluating `compute_π(100_000_000)` takes about 0.25 seconds. Thus, the loop would take about 2.5 seconds since we are calling the function 10 times.
+
+### NB2-Q2
+
+The time in doing the loop will be almost zero since the loop just schedules 10 tasks, which should be very fast.
+
+### NB2-Q3
+
+It will take 2.5 seconds, like in question 1. The `@sync` macro forces to wait for all tasks we have generated with the `@async` macro. Since we have created 10 tasks and each of them takes about 0.25 seconds, the total time will be about 2.5 seconds.
+
+### NB2-Q4
+
+It will take about 3 seconds. The channel has buffer size 4, thus the call to `put!`will not block. The call to `take!` will not block neither since there is a value stored in the channel. The taken value is 3 and therefore we will wait for 3 seconds. 
+
+### NB2-Q5
+
+The channel is not buffered and therefore the call to `put!` will block. The cell will run forever, since there is no other task that calls `take!` on this channel. 
+
+## Distributed computing in Julia
+
+### NB3-Q1
+
+We send the matrix (16 entries) and then we receive back the result (1 extra integer). Thus, the total number of transferred integers in 17.
+
+### NB3-Q2
+
+Even though we only use a single entry of the matrix in the remote worker, the entire matrix is captured and sent to the worker. Thus, we will transfer 17 integers like in Question 1.
+
+### NB3-Q3
+
+The value of `x` will still be zero since the worker receives a copy of the matrix and it modifies this copy, not the original one.
+
+### NB3-Q4
+
+In this case, the code `a[2]=2` is executed in the main process. Since the matrix is already in the main process, it is not needed to create and send a copy of it. Thus, the code modifies the original matrix and the value of `x` will be 2. 
+
+## Distributed computing with MPI
+
+### Exercise 1
+
+```julia
+using MPI
+MPI.Init()
+comm = MPI.Comm_dup(MPI.COMM_WORLD)
+rank = MPI.Comm_rank(comm)
+nranks = MPI.Comm_size(comm)
+buffer = Ref(0)
+if rank == 0
+    msg = 2
+    buffer[] = msg
+    println("msg = $(buffer[])")
+    MPI.Send(buffer,comm;dest=rank+1,tag=0)
+    MPI.Recv!(buffer,comm;source=nranks-1,tag=0)
+    println("msg = $(buffer[])")
+else
+    dest = if (rank != nranks-1)
+        rank+1
+    else
+        0
+    end
+    MPI.Recv!(buffer,comm;source=rank-1,tag=0)
+    buffer[] += 1
+    println("msg = $(buffer[])")
+    MPI.Send(buffer,comm;dest,tag=0)
+end
+```
+
+### Exercise 2
+
+```julia
+f = () -> Channel{Int}(1)
+chnls = [ RemoteChannel(f,w) for w in workers() ]
+@sync for (iw,w) in enumerate(workers())
+    @spawnat w begin
+        chnl_snd = chnls[iw]
+        if w == 2
+            chnl_rcv = chnls[end]
+            msg = 2
+            println("msg = $msg")
+            put!(chnl_snd,msg)
+            msg = take!(chnl_rcv)
+            println("msg = $msg")
+        else
+           chnl_rcv = chnls[iw-1]
+           msg = take!(chnl_rcv)
+           msg += 1
+           println("msg = $msg")
+           put!(chnl_snd,msg)
+        end
+    end
+end
+```
+
+This is another possible solution.
+
+```julia
+@everywhere function work(msg)
+    println("msg = $msg")
+    if myid() != nprocs()
+        next = myid() + 1
+        @fetchfrom next work(msg+1)
+    else
+        @fetchfrom 2 println("msg = $msg")
+    end
+end
+msg = 2
+@fetchfrom 2 work(msg)
+```
+## Matrix-matrix multiplication
+
+### Exercise 1
+
+```julia
+function matmul_dist_3!(C,A,B)
+    m = size(C,1)
+    n = size(C,2)
+    l = size(A,2)
+    @assert size(A,1) == m
+    @assert size(B,2) == n
+    @assert size(B,1) == l
+    @assert mod(m,nworkers()) == 0
+    nrows_w = div(m,nworkers())
+    @sync for (iw,w) in enumerate(workers())
+        lb = 1 + (iw-1)*nrows_w
+        ub = iw*nrows_w
+        A_w = A[lb:ub,:]
+        ftr = @spawnat w begin
+             C_w = similar(A_w)
+             matmul_seq!(C_w,A_w,B)
+             C_w
+        end
+        @async C[lb:ub,:] = fetch(ftr)
+    end
+    C
+end
+
+@everywhere function matmul_seq!(C,A,B)
+    m = size(C,1)
+    n = size(C,2)
+    l = size(A,2)
+    @assert size(A,1) == m
+    @assert size(B,2) == n
+    @assert size(B,1) == l
+    z = zero(eltype(C))
+    for j in 1:n
+        for i in 1:m
+            Cij = z
+            for k in 1:l
+                @inbounds Cij = Cij + A[i,k]*B[k,j]
+            end
+            C[i,j] = Cij
+        end
+    end
+    C
+end
+```
+
+### Exercise 2
+
+At each call to @spawnat we will communicate O(N) and compute O(N) in a worker process just like in algorithm 1. However, we will do this work N^2/P times on average at each worker. Thus, the total communication and computation on a worker will be O(N^3/P) for both communication and computation.  Thus, the communication over computation ratio will still be O(1) and thus the communication will dominate in practice, making the algorithm inefficient.
+
+## Jacobi method
+
+### Exercise 1
+
+```julia
+@everywhere workers() begin
+    using MPI
+    comm = MPI.Comm_dup(MPI.COMM_WORLD)
+    function jacobi_mpi(n,niters)
+        nranks = MPI.Comm_size(comm)
+        rank = MPI.Comm_rank(comm)
+        if mod(n,nranks) != 0
+            println("n must be a multiple of nranks")
+            MPI.Abort(comm,1)
+        end
+        n_own = div(n,nranks)
+        u = zeros(n_own+2)
+        u[1] = -1
+        u[end] = 1
+        u_new = copy(u)
+        for t in 1:niters
+            reqs = MPI.Request[]
+            if rank != 0
+                neig_rank = rank-1
+                req = MPI.Isend(view(u,2:2),comm,dest=neig_rank,tag=0)
+                push!(reqs,req)
+                req = MPI.Irecv!(view(u,1:1),comm,source=neig_rank,tag=0)
+                push!(reqs,req)
+            end
+            if rank != (nranks-1)
+                neig_rank = rank+1
+                s = n_own+1
+                r = n_own+2
+                req = MPI.Isend(view(u,s:s),comm,dest=neig_rank,tag=0)
+                push!(reqs,req)
+                req = MPI.Irecv!(view(u,r:r),comm,source=neig_rank,tag=0)
+                push!(reqs,req)
+            end
+            for i in 3:n_own
+                u_new[i] = 0.5*(u[i-1]+u[i+1])
+            end
+            MPI.Waitall(reqs)
+            for i in (2,n_own+1)
+                u_new[i] = 0.5*(u[i-1]+u[i+1])
+            end
+            u, u_new = u_new, u
+        end
+        return u
+    end
+end
+```
+
+
+
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--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Gelieza K	7b4621e166	Minor changes	2024-01-12 11:41:40 +01:00
Gelieza K	9b8dcf4331	Turn question 1 in TSP to example	2023-11-27 11:51:08 +01:00
Gelieza K	f60ea53aba	Add solution to exercise 1 in LEQ notebook	2023-11-27 11:50:14 +01:00
Gelieza K	b628e017c1	Add questions to TSP and PDEs notebooks	2023-11-16 12:50:09 +01:00
Gelieza K	685d3db6a5	Improve explanations ASP and LEQ notebooks	2023-11-14 11:16:37 +01:00
Gelieza K	123053b9c7	Correct errors in ASP notebook	2023-11-10 12:32:10 +01:00
Gelieza K	c838264158	Polish notebook PDEs	2023-11-10 11:35:43 +01:00
Gelieza K	8a60d3f999	Adjust images for colorblindness	2023-11-06 13:02:12 +01:00
Gelieza K	e88da2b3bd	Add more explanations to PDEs notebook	2023-11-03 12:56:23 +01:00
Gelieza K	d1a88e7525	Complete explanations PDEs notebook	2023-11-02 13:22:45 +01:00
Gelieza K	a7b86b4a38	Clear outputs	2023-11-02 13:22:12 +01:00
Gelieza K	f7de703973	Polish tsp notebook	2023-10-30 12:29:55 +01:00
Gelieza K	e34d92008b	Polish notebooks ASP, LEQ	2023-10-30 11:23:00 +01:00
Francesc Verdugo	bf45227674	Merge pull request #31 from fverdugo/francesc Notebook on pdes	2023-10-16 13:59:19 +02:00
Francesc Verdugo	59f36650e9	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-10-16 13:50:31 +02:00
Francesc Verdugo	4a8548ce62	Adding notebook on pdes	2023-10-16 13:50:16 +02:00
Francesc Verdugo	785e78576a	Merge pull request #30 from ezrannetttty/main Fixed a typo regarding latency hiding. Fixes #29	2023-10-02 10:58:29 +02:00
Y. Z	b116cebaf2	Fixed a typo regarding latency hiding	2023-10-02 16:53:20 +08:00
Francesc Verdugo	f820a72c8c	Merge pull request #28 from ezrannetttty/main Fixed an error and a typo.	2023-10-02 10:33:18 +02:00
ezrannetttty	557b342f63	Missing `!` after MPI.Recv	2023-10-01 03:46:04 +08:00
ezrannetttty	e1c4a9e1a0	fixed an error in the implementation of parallel algorithm 2	2023-10-01 03:43:04 +08:00
Francesc Verdugo	26afa1d3c7	Merge pull request #27 from fverdugo/francesc LEQ and TSP	2023-09-29 10:05:47 +02:00
Francesc Verdugo	e34b10c37c	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-29 10:00:46 +02:00
Francesc Verdugo	795f8ec805	Adding LEQ and TSP	2023-09-29 10:00:29 +02:00
Francesc Verdugo	c3f6c5a5c0	Merge pull request #26 from fverdugo/francesc Added solutions for Jacobi notebook	2023-09-22 17:31:11 +02:00
Francesc Verdugo	7dd8b4fabc	Added solutions for Jacobi notebook	2023-09-22 17:08:11 +02:00
Francesc Verdugo	50fb289e5b	Merge pull request #25 from fverdugo/francesc Changes after session on Tuesday 19th 2023	2023-09-20 09:10:56 +02:00
Francesc Verdugo	173d1ad747	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-19 17:54:16 +02:00
Francesc Verdugo	a9692802de	Updating matrix-matrix notebook	2023-09-19 17:54:00 +02:00
Francesc Verdugo	3d7fcb4d8e	Adding solutions for matrix-matrix multiplication	2023-09-19 17:53:27 +02:00
Francesc Verdugo	6cf3b87d0a	Merge pull request #24 from thijsheijden/fix/spawned-workers Fix the hint on spawned workers	2023-09-19 17:51:59 +02:00
Francesc Verdugo	118f7f8ecd	Merge pull request #23 from imchell/env Add setting global env command in MPI tutorial	2023-09-19 17:41:49 +02:00
thijsheijden	ef4aeeb7db	Fix the hint on spawned workers	2023-09-19 17:23:36 +02:00
Chell	185c19dc6e	recover version	2023-09-19 16:58:53 +02:00
Chell	9ff9a178e4	recover figs	2023-09-19 16:52:54 +02:00
Chell	3034b92da3	Revert "add setting global env command" This reverts commit `b690daaf6e`.	2023-09-19 16:44:36 +02:00
Chell	57d1727647	Merge branch 'fig' into env	2023-09-19 16:43:50 +02:00
Chell	11b25d5009	fix format	2023-09-19 16:38:48 +02:00
Chell	b690daaf6e	add setting global env command	2023-09-19 11:10:00 +02:00
Francesc Verdugo	0b81f39564	Merge pull request #22 from fverdugo/francesc Typos	2023-09-18 17:05:28 +02:00
Francesc Verdugo	b0847c897c	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-18 15:52:59 +02:00
Francesc Verdugo	4fbf18dc0e	Typos	2023-09-18 15:52:46 +02:00
Francesc Verdugo	441a15f52f	Merge pull request #21 from royderegt/patch-2 Fix answer checker	2023-09-18 15:28:56 +02:00
Roy	fa68ec8f85	Fix answer checker	2023-09-18 14:25:31 +02:00
Francesc Verdugo	6ce67fde1a	Merge pull request #20 from fverdugo/francesc Changes after session 4	2023-09-15 17:34:32 +02:00
Francesc Verdugo	f6a3a677b2	Changes after the lecture on Friday September 15th 2023	2023-09-15 16:39:05 +02:00
Francesc Verdugo	01c69ff310	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-15 15:12:50 +02:00
Francesc Verdugo	60ae199c86	Saving MPI-related figures	2023-09-15 15:11:59 +02:00
Francesc Verdugo	87684b2d38	Merge pull request #19 from YAMWD/main fix wrong answer in jupyter notebook	2023-09-15 15:05:07 +02:00
zhiyan Yao	20c1049ada	fix wrong answer from 16 to 17 in Q1 and Q2 at notebooks/julia_distributed.ipynb	2023-09-15 12:04:25 +02:00
Francesc Verdugo	76789ca320	Saving	2023-09-13 11:28:33 +02:00
Francesc Verdugo	4e13c64114	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-13 11:28:08 +02:00
Francesc Verdugo	6011c99cb8	More work on TSP	2023-09-13 11:27:55 +02:00
Francesc Verdugo	559cefd8f4	More work in tsp	2023-09-13 11:25:06 +02:00
Francesc Verdugo	0e7cdd08e9	Merge pull request #18 from fverdugo/francesc Update the Getting Started tutorial to the new version of MPI.jl	2023-09-08 18:22:12 +02:00
Francesc Verdugo	145d42bd22	Update the Getting Started tutorial to the new version of MPI.jl	2023-09-08 18:15:44 +02:00
Francesc Verdugo	9a7ce528ac	Merge pull request #17 from fverdugo/francesc Misc improvements	2023-09-08 18:00:52 +02:00
Francesc Verdugo	4ad26425f6	Adding solutions to exercises	2023-09-08 17:56:28 +02:00
Francesc Verdugo	dc2f65480f	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-08 16:41:16 +02:00
Francesc Verdugo	a5f1ac6e5a	Merge pull request #15 from Noorts/feature/improve_session2 Improve notebooks session 2	2023-09-08 16:40:05 +02:00
Francesc Verdugo	b42470c275	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-09-08 16:39:09 +02:00
Noorts	214dbbdf85	Improve `julia_async.ipynb`	2023-09-08 12:18:48 +02:00
Noorts	71fd8cad72	Improve `julia_basics.ipynb`	2023-09-08 11:51:40 +02:00
Francesc Verdugo	fd3349e54a	Merge pull request #14 from Noorts/feature/fix-typos-getting-started Fix typos in `getting_started_with_julia.md`	2023-09-08 10:23:34 +02:00
Noorts	71fd7d8f56	Fix typos in `getting_started_with_julia.md`	2023-09-08 10:15:18 +02:00
Francesc Verdugo	aa7b3c28b8	Merge pull request #13 from imchell/dev Add link to the MPI backend configuration	2023-09-07 12:54:19 +02:00
Chell	598137ec52	Add link to the MPI backend configuration	2023-09-07 12:36:33 +02:00
Francesc Verdugo	a79d490bf3	More work in LEQ	2023-09-06 15:52:24 +02:00
Francesc Verdugo	665c853ad2	Merge pull request #12 from royderegt/patch-1 Fix typo	2023-09-05 17:05:05 +02:00
Roy	bc7f87be14	Fix typo	2023-09-05 16:44:00 +02:00
Francesc Verdugo	abd74c81a8	Merge pull request #11 from fverdugo/francesc More notebooks	2023-08-30 12:22:55 +02:00
Francesc Verdugo	9429f1e1e3	Publishing more notebooks	2023-08-30 12:17:13 +02:00
Francesc Verdugo	5095192209	Final touches in asp notebook	2023-08-30 12:12:57 +02:00
Francesc Verdugo	59288a7e53	Final touches in Jacobi notebook	2023-08-30 10:57:50 +02:00
Francesc Verdugo	cabefa5acd	Merge pull request #10 from fverdugo/francesc Make Titles in navigation bar consistent with notebooks	2023-08-29 12:07:23 +02:00
Francesc Verdugo	795eff418f	Make Titles in navigation bar consistent with notebooks	2023-08-29 12:02:03 +02:00
Francesc Verdugo	ed7bcf8c06	Merge pull request #9 from fverdugo/francesc Adding exercises to MPI tutorial	2023-08-29 11:20:38 +02:00
Francesc Verdugo	0b53e10b89	Adding exercises to MPI tutorial	2023-08-29 11:15:12 +02:00
Francesc Verdugo	98ee1a2e08	Merge pull request #8 from fverdugo/francesc Remove binder	2023-08-25 22:47:31 +02:00
Francesc Verdugo	1516d0d7fc	Merge branch 'main' of github.com:fverdugo/XM_40017 into francesc	2023-08-25 22:46:28 +02:00
Francesc Verdugo	b82c11d3a7	Remove binder	2023-08-25 22:45:28 +02:00
Francesc Verdugo	4a6041a5d7	Merge pull request #7 from fverdugo/francesc Attempt to fix iframes	2023-08-25 22:21:06 +02:00
Francesc Verdugo	81177c8cfc	Attempt to fix iframes	2023-08-25 22:20:08 +02:00
Francesc Verdugo	a4f014c064	Merge pull request #6 from fverdugo/francesc Attempt to fix iframes	2023-08-25 20:43:30 +02:00
Francesc Verdugo	15c08580b9	Attempt to fix iframes	2023-08-25 20:42:55 +02:00
Francesc Verdugo	9f0ca208f1	Merge pull request #5 from fverdugo/francesc some fixes	2023-08-25 18:57:05 +02:00
Francesc Verdugo	e775f37ce5	some fixes	2023-08-25 18:55:46 +02:00
Francesc Verdugo	f7674fe705	Merge pull request #4 from fverdugo/francesc Publish 3 first notebooks	2023-08-25 18:03:05 +02:00
Francesc Verdugo	421ad3ad68	Publish 3 first notebooks	2023-08-25 17:57:25 +02:00
Francesc Verdugo	2b8b471cb4	Create LICENSE.md	2023-08-25 15:36:18 +02:00
Francesc Verdugo	44520fbe1d	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-25 15:27:54 +02:00
Francesc Verdugo	c1aa8a7262	Close to first version to be published	2023-08-25 15:27:17 +02:00
Gelieza K	1f375dd4ff	Exchange example to ensure nonzero pivots	2023-08-25 15:16:32 +02:00
Francesc Verdugo	097159c967	Update README	2023-08-25 11:54:53 +02:00
Gelieza K	b3f45fce34	Merge branch 'main' of https://github.com/fverdugo/XM_40017	2023-08-24 16:55:08 +02:00
Gelieza K	9bb1ed1896	Add search overhead exercise and solution	2023-08-24 16:55:01 +02:00
Francesc Verdugo	d8f8564236	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-23 09:00:49 +02:00
Francesc Verdugo	1a9b1a6756	Saving new figures	2023-08-23 09:00:04 +02:00
Gelieza K	904d4caee5	Add linear equations serial solution	2023-08-22 12:45:41 +02:00
Gelieza K	5c03b6cf33	Add exercise solution for measuring TSP search overhead	2023-08-21 16:06:05 +02:00
Gelieza K	7899998863	Improve tsp parallel implementation	2023-08-21 16:05:25 +02:00
Gelieza K	b8728d637f	Merge branch 'main' of https://github.com/fverdugo/XM_40017	2023-08-21 11:58:28 +02:00
Gelieza K	1202cf41a9	Fix TSP serial and parallel implementation	2023-08-21 11:58:19 +02:00
Francesc Verdugo	5a7d33d8ea	More work on tsp	2023-08-18 16:39:12 +02:00
Gelieza K	aa26119f34	Finish todo in asp notebook	2023-08-18 11:51:59 +02:00
Francesc Verdugo	9372448ef5	More changes	2023-08-18 10:07:25 +02:00
Francesc Verdugo	6c681ef324	Adding asp notebook	2023-08-17 15:06:38 +02:00
Gelieza K	fc5495986a	Merge branch 'main' of https://github.com/fverdugo/XM_40017	2023-08-17 14:48:20 +02:00
Gelieza K	5e0531930e	Add communication ring examples to solutions.ipynb	2023-08-17 14:48:11 +02:00
Francesc Verdugo	4a2ca280cf	Saving changes	2023-08-17 13:51:43 +02:00
Francesc Verdugo	03a3d629e2	More on MPI	2023-08-16 11:01:59 +02:00
Francesc Verdugo	b91a64c5a1	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-16 08:58:14 +02:00
Francesc Verdugo	7862ad79e4	Changes on MPI tutorial	2023-08-15 18:08:44 +02:00
Gelieza K	9991211f35	Debug TSP implementation	2023-08-15 14:48:33 +02:00
Gelieza K	d954714bed	Resolve merge conflicts	2023-08-15 11:46:58 +02:00
Gelieza K	fe4e47f56b	Merge branch 'main' of https://github.com/fverdugo/XM_40017	2023-08-15 11:43:51 +02:00
Francesc Verdugo	9a3c8dbd4c	Saving changes	2023-08-15 11:43:48 +02:00
Gelieza K	f34290559e	Update .gitignore	2023-08-15 11:43:17 +02:00
Gelieza K	73458f0e1d	Update .gitignore	2023-08-15 11:40:43 +02:00
Gelieza K	95c4608380	Remove generated files from index	2023-08-15 11:39:53 +02:00
Francesc Verdugo	b82b2d4bea	Changes in Jacobi	2023-08-15 10:00:21 +02:00
Francesc Verdugo	e7417b1e46	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-14 18:49:28 +02:00
Francesc Verdugo	f283a8f8da	Saving	2023-08-14 18:42:36 +02:00
Francesc Verdugo	d2af3894cf	Saving figures	2023-08-14 18:33:06 +02:00
Francesc Verdugo	d902333350	More work with jacobi	2023-08-14 18:32:38 +02:00
Gelieza K	14b4706526	Proof read webpage	2023-08-14 16:09:15 +02:00
Gelieza K	d2bad0df61	Add license note	2023-08-14 15:34:38 +02:00
Gelieza K	b55aef53a7	Update solutions notebook	2023-08-14 15:14:23 +02:00
Gelieza K	ebdeef8893	Resolve merge conflicts	2023-08-14 13:06:27 +02:00
Gelieza K	d13ea2408a	Proof read Jacobi method	2023-08-14 13:04:06 +02:00
Francesc Verdugo	5d0c156fc1	Minor fixes	2023-08-14 11:47:41 +02:00
Francesc Verdugo	fbb7423b65	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-14 09:58:30 +02:00
Francesc Verdugo	abcd874867	Adding jacobi notebook before merge	2023-08-14 09:58:17 +02:00
Gelieza K	1c3062f249	Finish Todos in notebooks	2023-08-11 16:07:23 +02:00
Gelieza K	3de8ce76c9	Update .gitignore	2023-08-11 15:48:06 +02:00
Gelieza K	6a8a64740c	Delete untracked files	2023-08-11 15:47:41 +02:00
Gelieza K	7f0f40fa47	Restructure folders	2023-08-11 15:41:40 +02:00
Gelieza K	732eb4ee00	Add tutorial how to use MPI from Julia	2023-08-11 12:56:59 +02:00
Francesc Verdugo	811ec8f509	Moving notebooks out of the doc folder	2023-08-11 12:28:43 +02:00
Francesc Verdugo	6c4bbec71b	Saving before restructuring	2023-08-11 12:25:01 +02:00
Francesc Verdugo	e6e68e8f9a	Adding new Jacobi notebook	2023-08-10 19:10:48 +02:00
Francesc Verdugo	973c76fff0	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-10 15:18:26 +02:00
Francesc Verdugo	a6b8b7e051	Some cleanup and restructuring	2023-08-10 15:17:45 +02:00
Gelieza K	963cbd96e7	Update .gitignore	2023-08-10 14:27:45 +02:00
Gelieza K	ff9158dd9b	Merge branch 'main' of https://github.com/fverdugo/XM_40017	2023-08-10 14:25:45 +02:00
Gelieza K	b03244d130	Fix UUID	2023-08-10 14:25:28 +02:00
Francesc Verdugo	ecebbdbab1	Saving changes	2023-08-10 13:48:22 +02:00
Francesc Verdugo	f3cb03b337	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-10 12:50:20 +02:00
Francesc Verdugo	51c608cf71	Adding new page: Getting started	2023-08-10 12:47:36 +02:00
Gelieza K	780c982074	Update gitignore	2023-08-10 11:47:01 +02:00
Francesc Verdugo	a45683b381	Adding some content to the home page	2023-08-10 10:58:07 +02:00
Francesc Verdugo	3507cb66d6	Merge branch 'main' of github.com:fverdugo/XM_40017 into main	2023-08-10 09:12:28 +02:00
Gelieza K	2c76ded98a	Update dependencies in docs	2023-08-07 18:11:12 +02:00
Gelieza K	a2bb4df6f5	Update dependencies	2023-08-07 18:04:15 +02:00
Gelieza K	3b1e15c6f8	Hide outputs and convert questions to MC format	2023-08-07 17:22:58 +02:00
Gelieza K	36e27eee4e	Add favicon and logo	2023-08-07 16:26:05 +02:00
Gelieza K	13ee7880e7	Automatically convert images to base64	2023-08-04 17:01:07 +02:00
Gelieza K	9b563c984e	Add answers to MC questions	2023-07-31 18:09:28 +02:00
Gelieza K	8892e1e7f7	Populate with existing notebooks	2023-07-31 17:37:49 +02:00
Gelieza K	67c2c39cda	Update Readme.md	2023-07-31 17:21:26 +02:00
Gelieza K	ee7a9c75d9	Build md files automatically in make.jl	2023-07-31 17:19:18 +02:00
Gelieza K	65e88dff8e	Add the basic template to generate webpage	2023-07-31 15:13:50 +02:00
Francesc Verdugo	ffcd31c482	Starting to add notebook about tsp	2023-07-28 09:06:19 +02:00
Francesc Verdugo	5b47a090a5	Saving	2023-07-26 11:25:39 +02:00
Francesc Verdugo	413e27df23	Added Project.toml for notebooks	2023-07-26 11:13:36 +02:00
Francesc Verdugo	0eea1ec8c1	Saving changes in matrix matrix mul	2023-07-26 11:12:55 +02:00
Francesc Verdugo	b5f054495a	Saving	2023-07-25 19:15:57 +02:00
Francesc Verdugo	aed98da00b	Initial commit	2023-07-24 18:28:47 +02:00
				`@@ -1 +0,0 @@`
				`{"documenter":{"julia_version":"1.10.5","generation_timestamp":"2024-10-07T12:14:49","documenter_version":"1.7.0"}}`