how do i install packages? | Java Community | Help. Code. Learn. | Page 1

prisma dagger Apr 18, 2023, 9:05 PM

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https://github.com/deeplearning4j/deeplearning4j/tree/master/libnd4j
i want this one

GitHub

deeplearning4j/libnd4j at master · deeplearning4j/deeplearning4j

Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running mat...

analog fernBOT Apr 18, 2023, 9:05 PM

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⌛ This post has been reserved for your question.

Hey @prisma dagger! Please use /close or the Close Post button above when you're finished. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.

TIP: Narrow down your issue to simple and precise questions to maximize the chance that others will reply in here.

knotty dove Apr 18, 2023, 9:06 PM

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prisma dagger https://github.com/deeplearning4j/deeplearning4j/tree/master/libnd4j i want this...

are you using maven or gradle

prisma dagger Apr 18, 2023, 9:16 PM

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knotty dove are you using maven or gradle

no

knotty dove Apr 18, 2023, 9:20 PM

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prisma dagger no

download the latest release under the release tag and add it as a library in your favorite ide

prisma dagger Apr 18, 2023, 9:21 PM

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knotty dove download the latest release under the release tag and add it as a library in you...

where is releases

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i dont see

knotty dove Apr 18, 2023, 9:25 PM

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It appears using this requires further configuration. Check the readme of the repository.

prisma dagger Apr 18, 2023, 9:27 PM

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i did

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i cant find the jar

finite jolt Apr 18, 2023, 9:49 PM

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DL4J itself has multiple dependencies

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Using a build tool like Maven or Gradle and not downloading the JAR will be easier

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especially since it also uses native components (I think)

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Deeplearning4J has quite a few dependencies. For this reason we only support usage with a build tool.
Yeah, you should use Maven or Gradle

prisma dagger Apr 18, 2023, 9:52 PM

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finite jolt Using a build tool like Maven or Gradle and not downloading the JAR will be easi...

i cant get maven to work

finite jolt Apr 18, 2023, 9:52 PM

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What's the problem with Maven?

prisma dagger Apr 18, 2023, 9:52 PM

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C:\Users\fried>mvn --version
The JAVA_HOME environment variable is not defined correctly,
this environment variable is needed to run this program.

finite jolt Apr 18, 2023, 9:54 PM

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What's the output of javac -version?

prisma dagger Apr 18, 2023, 9:55 PM

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javac 19.0.2

finite jolt Apr 18, 2023, 9:55 PM

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What's the output of where javac?

prisma dagger Apr 18, 2023, 9:55 PM

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C:\Program Files\Common Files\Oracle\Java\javapath\javac.exe

finite jolt Apr 18, 2023, 9:55 PM

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You should have a program called Edit environment variables ir similar on your computer.

prisma dagger Apr 18, 2023, 9:56 PM

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it says JAVA_HOME is at C:\Program Files\Java\jdk-19

finite jolt Apr 18, 2023, 9:57 PM

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what happens if you enter echo %JAVA_HOME% in cmd?

prisma dagger Apr 18, 2023, 9:57 PM

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"C:\Java\jdk-18.0.2.1_windows-x64_bin.exe"

finite jolt Apr 18, 2023, 9:57 PM

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ok that's wrong

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Did you change the JAVA_HOME?

prisma dagger Apr 18, 2023, 9:58 PM

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?

finite jolt Apr 18, 2023, 9:58 PM

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typo, fixed

prisma dagger Apr 18, 2023, 9:58 PM

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did i change it to what

finite jolt Apr 18, 2023, 9:58 PM

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prisma dagger "C:\Java\jdk-18.0.2.1_windows-x64_bin.exe"

from that

prisma dagger Apr 18, 2023, 9:58 PM

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yes

finite jolt Apr 18, 2023, 9:58 PM

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prisma dagger it says JAVA_HOME is at C:\Program Files\Java\jdk-19

to that

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Did you restart cmd after changing it?

prisma dagger Apr 18, 2023, 9:59 PM

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prisma dagger it says JAVA_HOME is at C:\Program Files\Java\jdk-19

this is where the jdk is

finite jolt Apr 18, 2023, 9:59 PM

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prisma dagger this is where the jdk is

yeah, that one seems correct

prisma dagger Apr 18, 2023, 9:59 PM

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restarting cmd worked

finite jolt Apr 18, 2023, 9:59 PM

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prisma dagger "C:\Java\jdk-18.0.2.1_windows-x64_bin.exe"

but that one isn't correct

prisma dagger Apr 18, 2023, 10:00 PM

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C:\Users\fried>echo %JAVA_HOME%
C:\Program Files\Java\jdk-19

finite jolt Apr 18, 2023, 10:00 PM

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prisma dagger restarting cmd worked

so nothing stops you from using Maven?

prisma dagger Apr 18, 2023, 10:00 PM

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'mvn' is not recognized as an internal or external command,
operable program or batch file.

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also the fact i dont know how

finite jolt Apr 18, 2023, 10:00 PM

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well you need to set the PATH to maven

prisma dagger Apr 18, 2023, 10:01 PM

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i did

finite jolt Apr 18, 2023, 10:01 PM

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that is reset/reloaded when restarting cmd

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just like JAVA_HOME or other environment variables

prisma dagger Apr 18, 2023, 10:01 PM

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what

finite jolt Apr 18, 2023, 10:02 PM

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if you use set PATH=..., that will only be valid for your cmd session

prisma dagger Apr 18, 2023, 10:02 PM

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no i set it in environment variables

finite jolt Apr 18, 2023, 10:02 PM

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but you don't necessarily need to use the mvn command line for using Maven

prisma dagger Apr 18, 2023, 10:03 PM

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i want mvn to work

finite jolt Apr 18, 2023, 10:03 PM

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prisma dagger no i set it in environment variables

what's the output of echo %PATH%? (censor everything that's sensible)

prisma dagger Apr 18, 2023, 10:03 PM

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C:\Users\fried>echo %PATH%
C:\Program Files\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\VMware\VMware Player\bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Git\cmd;C:\Program Files\dotnet;C:\Users\fried.cargo\bin;C:\Users\fried.cargo\bin;C:\Users\fried\AppData\Local\Programs\Python\Python310\Scripts;C:\Users\fried\AppData\Local\Programs\Python\Python310;C:\Users\fried\AppData\Local\Programs\Python\Python311\Scripts;C:\Users\fried\AppData\Local\Programs\Python\Python311;C:\Users\fried\AppData\Local\Microsoft\WindowsApps;;C:\Users\fried\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\fried.dotnet\tools;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2022.3.1\bin;

C:\Users\fried>

finite jolt Apr 18, 2023, 10:04 PM

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I don't see Maven in there

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Did you restart cmd after adding Maven to your PATH?

prisma dagger Apr 18, 2023, 10:04 PM

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ys

finite jolt Apr 18, 2023, 10:04 PM

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How did you add it to your PATH?

prisma dagger Apr 18, 2023, 10:05 PM

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System variables

MAVEN_HOME
C:\Program Files\Java\apache-maven-3.9.1

finite jolt Apr 18, 2023, 10:05 PM

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oh that's the problem

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you need to edit the PATH environment variable

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and add C:\Program Files\Java\apache-maven-3.9.1\bin to it

prisma dagger Apr 18, 2023, 10:06 PM

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what is path

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C:\Users\fried>mvn --version
Apache Maven 3.9.1 (2e178502fcdbffc201671fb2537d0cb4b4cc58f8)
Maven home: C:\Program Files\Java\apache-maven-3.9.1
Java version: 19.0.2, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk-19
Default locale: en_US, platform encoding: UTF-8
OS name: "windows 11", version: "10.0", arch: "amd64", family: "windows"

finite jolt Apr 18, 2023, 10:07 PM

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it's an environment variable

finite jolt Apr 18, 2023, 10:07 PM

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prisma dagger C:\Users\fried>mvn --version Apache Maven 3.9.1 (2e178502fcdbffc201671fb2537d0cb...

seems working

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Now you can set up your Maven project

prisma dagger Apr 18, 2023, 10:08 PM

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finite jolt Now you can set up your Maven project

PS C:\Users\fried\Desktop\Saratoga-MK3> mvn give me Nd4j
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.064 s
[INFO] Finished at: 2023-04-18T17:08:22-05:00
[INFO] ------------------------------------------------------------------------
[ERROR] The goal you specified requires a project to execute but there is no POM in this directory (C:\Users\fried\Desktop\Saratoga-MK3). Please verify you invoked Maven from the correct directory. -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MissingProjectException
PS C:\Users\fried\Desktop\Saratoga-MK3>

finite jolt Apr 18, 2023, 10:09 PM

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it doesn't work like that

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First, you need to create a Maven project

prisma dagger Apr 18, 2023, 10:11 PM

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how do

finite jolt Apr 18, 2023, 10:11 PM

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What IDE are you using?

prisma dagger Apr 18, 2023, 10:11 PM

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vsc

finite jolt Apr 18, 2023, 10:11 PM

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oh no

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Do you have some option to create a Maven project in VSC?

prisma dagger Apr 18, 2023, 10:12 PM

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idk

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i hate visual studio and intellij

finite jolt Apr 18, 2023, 10:14 PM

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https://code.visualstudio.com/docs/java/java-build

Maven and Gradle support for Java in Visual Studio Code

prisma dagger Apr 18, 2023, 10:17 PM

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i dont like vs

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is bad

finite jolt Apr 18, 2023, 10:17 PM

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this link is for VSC

prisma dagger Apr 18, 2023, 10:18 PM

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oh

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how do i create it on existing project

finite jolt Apr 18, 2023, 10:20 PM

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just create a new project

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I have no idea about VSC

prisma dagger Apr 18, 2023, 10:21 PM

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finite jolt just create a new project

i dont want to restart

finite jolt Apr 18, 2023, 10:24 PM

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prisma dagger i dont want to restart

just copy the files over

prisma dagger Apr 18, 2023, 10:24 PM

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there isnt an option in vsc to make a new project

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it doesnt really use projects

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maven is stoopit

finite jolt Apr 18, 2023, 10:47 PM

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this isn't really a Maven problem

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more a VSC problem

finite jolt Apr 18, 2023, 10:47 PM

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finite jolt https://code.visualstudio.com/docs/java/java-build

the process for creating a Maven project in VSC is described here

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make sure you have the extension

analog fernBOT Apr 19, 2023, 3:50 AM

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This post has been inactive for over 300 minutes, thus, it has been archived.
If your question was not answered yet, feel free to re-open this post or create a new one.

prisma dagger Apr 19, 2023, 5:52 AM

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my god i hate everything about intelij

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the colors are bad

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the font is bad

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there is a weird line that i dont like

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it created hundreds of folders and files that i dont want and i dont know what they are

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it fails to do anything related to dependancies

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and i have no fucking idea how it is considered better than vsc

pastel gate Apr 19, 2023, 6:11 AM

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Well for starters it doesn't fail anything regarding dependencies

prisma dagger Apr 19, 2023, 6:11 AM

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pastel gate Well for starters it doesn't fail anything regarding dependencies

it took me 4 hours to install 1 dependacy

pastel gate Apr 19, 2023, 6:12 AM

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And if we are to believe you, vsc has no notion of projects. That means that any pile of shit that does handle projects, is all the reason you need to drop vsc forever and use the pile of shit instead

pastel gate Apr 19, 2023, 6:12 AM

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prisma dagger it took me 4 hours to install 1 dependacy

Well with vsc you would have just failed to do it altogether then. At least if you're sane

prisma dagger Apr 19, 2023, 6:15 AM

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pastel gate Well with vsc you would have just failed to do it altogether then. At least if y...

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red

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red

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lies

pastel gate Apr 19, 2023, 6:16 AM

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Am I supposed to see anything? Looks like your pom is bad or something

prisma dagger Apr 19, 2023, 6:17 AM

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pastel gate Am I supposed to see anything? Looks like your pom is bad or something

whats wrong with my pom

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>org.example</groupId>
  <artifactId>Saratoga</artifactId>
  <version>1.0-SNAPSHOT</version>
  <name>Archetype - Saratoga</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>org.nd4j</groupId>
      <artifactId>nd4j-native</artifactId>
      <version>1.0.0-M2.1</version>
    </dependency>
    <dependency>
      <groupId>org.deeplearning4j</groupId>
      <artifactId>deeplearning4j-core</artifactId>
      <version>1.0.0-M2.1</version>
    </dependency>
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.4.6</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>16</source>
          <target>16</target>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

pastel gate Apr 19, 2023, 6:19 AM

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It declares artifacts with dependencies that seem to not exist, apparently

prisma dagger Apr 19, 2023, 6:19 AM

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where

pastel gate Apr 19, 2023, 6:19 AM

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How would I know, I'd need the logs

prisma dagger Apr 19, 2023, 6:19 AM

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where logs

pastel gate Apr 19, 2023, 6:19 AM

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Where they're supposed to be

prisma dagger Apr 19, 2023, 6:19 AM

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where logs

pastel gate Apr 19, 2023, 6:20 AM

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At all places that aren't where they're not supposed to be

prisma dagger Apr 19, 2023, 6:20 AM

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where logs

finite jolt Apr 19, 2023, 6:40 AM

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Press Shift twice

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a text box should pop up

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then enter mvn dependency:go-offline install

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this should download all dependencies

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IntelliJ sometimes lies about dependencies not existing if it can't find them locally

finite jolt Apr 19, 2023, 6:42 AM

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finite jolt then enter `mvn dependency:go-offline install`

if that runs successfully, reload the Maven project in IntelliJ

analog fernBOT Apr 19, 2023, 11:50 AM

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This post has been inactive for over 300 minutes, thus, it has been archived.
If your question was not answered yet, feel free to re-open this post or create a new one.

prisma dagger Apr 19, 2023, 5:34 PM

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finite jolt then enter `mvn dependency:go-offline install`

knotty dove Apr 19, 2023, 5:34 PM

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prisma dagger

its pressing two times Control

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A Run Anything prompt should appear

prisma dagger Apr 19, 2023, 5:35 PM

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build success

knotty dove Apr 19, 2023, 5:36 PM

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All dependencies can be resolved ?

finite jolt Apr 19, 2023, 5:42 PM

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prisma dagger build success

then reload the maven project

finite jolt Apr 19, 2023, 5:42 PM

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knotty dove its pressing two times `Control`

my bad, I'm not used to IJ

finite jolt Apr 19, 2023, 5:43 PM

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finite jolt then reload the maven project

the problem is that IJ didn't know the dependencies exist

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so now you downloaded them

prisma dagger Apr 19, 2023, 5:43 PM

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still red

finite jolt Apr 19, 2023, 5:43 PM

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and you can tell IJ to check again

prisma dagger Apr 19, 2023, 5:43 PM

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wat

finite jolt Apr 19, 2023, 5:43 PM

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Did you use that button?

prisma dagger Apr 19, 2023, 5:44 PM

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oh cool

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what do these do?

finite jolt Apr 19, 2023, 5:44 PM

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finite jolt Did you use that button?

Yeah that tells IJ to check again and realize it lied

finite jolt Apr 19, 2023, 5:44 PM

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prisma dagger what do these do?

run maven commands/phases

prisma dagger Apr 19, 2023, 5:44 PM

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are any important

finite jolt Apr 19, 2023, 5:45 PM

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e.g. clean deletes the target folder, compile tells Maven to compile the project, test tells maven to run your tests, install tells Maven to build the project and save it to the local repository etc.

prisma dagger Apr 19, 2023, 6:57 PM

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SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".

finite jolt Apr 19, 2023, 7:27 PM

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maybe try adding slf4j-api to your pom.xml

prisma dagger Apr 19, 2023, 7:29 PM

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finite jolt maybe try adding slf4j-api to your pom.xml

how

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is there a command for that or do i do it by hand

finite jolt Apr 19, 2023, 7:31 PM

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<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api<artifactId>
    <version>YOUR-VERSION</version>
</dependency>

prisma dagger Apr 19, 2023, 7:31 PM

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finite jolt ```xml <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api<a...

your version?

finite jolt Apr 19, 2023, 7:32 PM

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the version of SLF4J-API

prisma dagger Apr 19, 2023, 7:32 PM

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where do i find that

finite jolt Apr 19, 2023, 7:32 PM

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maybe IntelliJ suggests it to you

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the newest is 2.0.7

prisma dagger Apr 19, 2023, 7:33 PM

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Dependency 'org.slf4j:slf4j-api:2.0.7' not found

finite jolt Apr 19, 2023, 7:33 PM

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same as previously

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download dependencies, reload project

prisma dagger Apr 19, 2023, 7:34 PM

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maven install right?

finite jolt Apr 19, 2023, 7:34 PM

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yeah

prisma dagger Apr 19, 2023, 7:35 PM

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that wasnt so bad

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14:34:47.049 [pool-1-thread-5] INFO org.nd4j.nativeblas.NativeOpsHolder -- Number of threads used for linear algebra: 6
14:34:47.052 [pool-1-thread-5] INFO org.nd4j.linalg.cpu.nativecpu.CpuNDArrayFactory -- Binary level Generic x86 optimization level AVX/AVX2
14:34:47.071 [pool-1-thread-5] INFO org.nd4j.nativeblas.Nd4jBlas -- Number of threads used for OpenMP BLAS: 6
14:34:47.088 [pool-1-thread-5] INFO org.nd4j.linalg.api.ops.executioner.DefaultOpExecutioner -- Backend used: [CPU]; OS: [Windows 11]
14:34:47.088 [pool-1-thread-5] INFO org.nd4j.linalg.api.ops.executioner.DefaultOpExecutioner -- Cores: [12]; Memory: [12.0GB];
14:34:47.088 [pool-1-thread-5] INFO org.nd4j.linalg.api.ops.executioner.DefaultOpExecutioner -- Blas vendor: [OPENBLAS]
14:34:47.091 [pool-1-thread-5] INFO org.nd4j.linalg.cpu.nativecpu.CpuBackend -- Backend build information:
 GCC: "12.1.0"
STD version: 201103L
DEFAULT_ENGINE: samediff::ENGINE_CPU
HAVE_FLATBUFFERS
HAVE_OPENBLAS```

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i assume this means it worked

finite jolt Apr 19, 2023, 7:35 PM

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yes

prisma dagger Apr 19, 2023, 7:35 PM

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and it prints that every time i run?

finite jolt Apr 19, 2023, 7:36 PM

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it should be possible to disable it somehow

prisma dagger Apr 19, 2023, 7:36 PM

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also why does it say CPU instead of GPU

finite jolt Apr 19, 2023, 7:36 PM

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because you used the CPU dependency?

prisma dagger Apr 19, 2023, 7:36 PM

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where did i do that

finite jolt Apr 19, 2023, 7:37 PM

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in the pom.xml

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nd4j-native is cpu I think

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https://deeplearning4j.konduit.ai/multi-project/explanation/configuration/backends/cudnn

Cudnn

Using the NVIDIA cuDNN library with DL4J.

prisma dagger Apr 19, 2023, 8:27 PM

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        double[][][] vectorB = matrixB.convertToVector();
        double[][][] vectorA = convertToVector();
        INDArray tensorB = Nd4j.create(vectorB);
        INDArray tensorA = Nd4j.create(vectorA);
        INDArray result = tensorA.mmul(tensorB);
        return convertToMatrix(result);```

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    at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122)
    at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)
    at Main.train(Main.java:95)
    at Main.main(Main.java:39)
Caused by: java.lang.IllegalStateException: Rank is 3 rows() call is not valid
    at org.nd4j.linalg.api.ndarray.BaseNDArray.rows(BaseNDArray.java:4069)
    at org.nd4j.linalg.api.ndarray.BaseNDArray.mmul(BaseNDArray.java:2913)
    at org.nd4j.linalg.api.ndarray.BaseNDArray.mmul(BaseNDArray.java:2922)
    at Matrix.multiply(Matrix.java:308)
    at Softmax.backward(Softmax.java:36)
    at Model.backward(Model.java:32)
    at TrainingTask.trainImages(TrainingTask.java:25)
    at TrainingTask.call(TrainingTask.java:36)
    at TrainingTask.call(TrainingTask.java:3)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
    at java.base/java.lang.Thread.run(Thread.java:1589)

Process finished with exit code 1

finite jolt Apr 19, 2023, 8:30 PM

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what are the matrix dimensions?

prisma dagger Apr 19, 2023, 8:32 PM

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finite jolt what are the matrix dimensions?

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why is the debug console so shit

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it doesnt save the result of previous commands

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tensorA -> [1,2,2]
tensorB -> [1,2,1]

finite jolt Apr 19, 2023, 8:33 PM

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are these the values or the dimensions?

prisma dagger Apr 19, 2023, 8:33 PM

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dims

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values are random doubles

finite jolt Apr 19, 2023, 8:34 PM

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so you are trying to do matrix multiplication on 3D matrices?

prisma dagger Apr 19, 2023, 8:35 PM

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finite jolt so you are trying to do matrix multiplication on 3D matrices?

yes

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but both have a z level of 1

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so it should essentially be a 2D multiplication

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not that 3D even is an issue

finite jolt Apr 19, 2023, 8:36 PM

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Can you try to resize them to 2D matrices?

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before doibg the matrix multiplication

prisma dagger Apr 19, 2023, 8:40 PM

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finite jolt Can you try to resize them to 2D matrices?

No

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The whole point of the import is for n dimensional matrices

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Why can’t it do a 3d multiply

finite jolt Apr 19, 2023, 8:43 PM

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try 2D and check whether it works

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Matrix multiplication isn't generally defined for 3D matrices - why do you think it would work?

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can you multiply two 1x1x1 matrices together?

finite jolt Apr 19, 2023, 8:49 PM

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prisma dagger ```java.util.concurrent.ExecutionException: java.lang.IllegalStateException: Ran...

that error seems like it doesn't support 3D matrix multiplication in the way yiu are doing it

prisma dagger Apr 19, 2023, 8:49 PM

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It is defined

finite jolt Apr 19, 2023, 8:53 PM

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by what?

prisma dagger Apr 19, 2023, 8:53 PM

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math

finite jolt Apr 19, 2023, 8:53 PM

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Are you sure there's a universally agreed definition of it?

prisma dagger Apr 19, 2023, 8:53 PM

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yes

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Einstein created a whole notation for high dimension tensor operations

finite jolt Apr 19, 2023, 8:54 PM

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Also on what is the dimension which should be "ignored"?

prisma dagger Apr 19, 2023, 8:54 PM

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none

finite jolt Apr 19, 2023, 8:55 PM

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So what's your formula for 3D matrix multiplication?

prisma dagger Apr 19, 2023, 8:55 PM

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C(i, j, k) = ∑[A(i, j, m) * B(m, k, n)]

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this uses the einstein notation

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Matrix A: (p x q x r)
Matrix B: (q x r x s)
Matrix C: (p x r x s)

finite jolt Apr 19, 2023, 8:57 PM

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where does m and n come from?

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these areboth not present on the left side

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are both indices defined by the sum?

prisma dagger Apr 19, 2023, 8:57 PM

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The variables "m" and "n" represent the indices along the second and fourth dimensions of matrices A and B, respectively.

finite jolt Apr 19, 2023, 8:58 PM

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(btw you can use LaTeX here if you are using two dollar signs before and after)

prisma dagger Apr 19, 2023, 8:58 PM

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idk how to latex

finite jolt Apr 19, 2023, 8:58 PM

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so you mean there are two sums?

prisma dagger Apr 19, 2023, 8:58 PM

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idk how to do it

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i know know its defined

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HOLY CRAP IT WORKS

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BLAS assembly cut my run time in half

finite jolt Apr 19, 2023, 9:00 PM

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so basically $$C_{i,j,k}=\sum_{m=1}^{M}\sum_{n=1}^{N} A_{i,j,m}B_{m,n,k}$$?

pine ridgeBOT Apr 19, 2023, 9:00 PM

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prisma dagger Apr 19, 2023, 9:00 PM

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shore

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but that would mean the z level of 1 matrix cant equal the z level of the second matrix

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which is why 1xnxm * 1xmxn doesnt work

finite jolt Apr 19, 2023, 9:02 PM

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pine ridge

if that is the formula, the inner_most_ dimensions must match

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With 2 dimensions, it is clear that the inner dimensions must match but with 3D - dimensions could mean different things

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e.g. one dimension could be for parallelization or whatever

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in which case there would be two dimensions which would need to match

prisma dagger Apr 19, 2023, 9:04 PM

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i converted them to 2D and at this spot in my code i dont think the z level will ever be greater than 1

finite jolt Apr 19, 2023, 9:04 PM

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I don't know what exactly you mean with z level

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one of the problems of mathematics is that different people use different terms and definitions

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paradoxically, mathematicians are really bad at agreeing on notation

finite jolt Apr 19, 2023, 9:08 PM

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pine ridge

like that's one possibility of defining it but you could also say something like $$C_{i,j,k}=\sum_{l=1}^L A_{i,j,l}B_{i,l,k}$$

pine ridgeBOT Apr 19, 2023, 9:08 PM

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prisma dagger Apr 19, 2023, 9:08 PM

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i wonder if it could be defined using the capitol PI notation using purely sub dot products

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thats the way i had it programmed in my code prior to BLAS library

finite jolt Apr 19, 2023, 9:14 PM

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that would require you having large products

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I mean products over an index

prisma dagger Apr 19, 2023, 9:15 PM

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why does the intelij debug console not save previous command results in the terminal

finite jolt Apr 19, 2023, 9:19 PM

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because it doesn't

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you can't just assume programs do what you think they do

prisma dagger Apr 19, 2023, 9:21 PM

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finite jolt you can't just assume programs do what you think they do

vsc does it and its very helpful

finite jolt Apr 19, 2023, 9:21 PM

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so what?

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That's no reason to assume another program does the same

prisma dagger Apr 19, 2023, 9:23 PM

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smh

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right when i was starting to think intilij was decent

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doesnt even have a proper debugger

analog fernBOT Apr 20, 2023, 2:30 AM

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finite jolt Apr 20, 2023, 4:57 AM

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IJ does have a proper debugger

#how do i install packages?