Aparapi执行报错：无法访问字段，模块权限问题求助

开发环境：IntelliJ IDEA + Maven，无GPU笔记本，使用Aparapi 3.0.0框架（无GPU时默认用ThreadPool替代）。运行官方Add示例代码时，执行kernel.execute(Range.create(size))抛出权限错误，错误信息如下：

Jun 01, 2023 2:12:07 PM com.aparapi.internal.model.ClassModel$AttributePool <init>
WARNING: Found unexpected Attribute (name = NestHost)
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:465)
    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:364)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1082)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field final float[] com.potato.ray_casting_maven.App$1.val$sum accessible: module com.potato.ray_casting_maven does not "opens com.potato.ray_casting_maven" to module aparapi
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
    at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
    at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
    at aparapi@3.0.0/com.aparapi.internal.kernel.KernelRunner.executeInternalInner(KernelRunner.java:1731)
    at aparapi@3.0.0/com.aparapi.internal.kernel.KernelRunner.executeInternalOuter(KernelRunner.java:1471)
    at aparapi@3.0.0/com.aparapi.internal.kernel.KernelRunner.execute(KernelRunner.java:1454)
    at aparapi@3.0.0/com.aparapi.Kernel.execute(Kernel.java:2907)
    at aparapi@3.0.0/com.aparapi.Kernel.execute(Kernel.java:2864)
    at aparapi@3.0.0/com.aparapi.Kernel.execute(Kernel.java:2804)
    at com.potato.ray_casting_maven/com.potato.ray_casting_maven.App.main(App.java:50)
    ... 11 more
Exception running application com.potato.ray_casting_maven.App
WARNING: Aparapi is running on an untested OpenCL platform version: OpenCL 3.0 

当前module-info.java配置：

module com.potato.ray_casting_maven {
    requires javafx.controls;
    requires javafx.fxml;
    requires aparapi;
    requires aparapi.jni;

    opens com.potato.ray_casting_maven to javafx.fxml;
    exports com.potato.ray_casting_maven;
}

pom.xml关键依赖：

<dependency>
    <groupId>com.aparapi</groupId>
    <artifactId>aparapi</artifactId>
    <version>3.0.0</version>
</dependency>

尝试添加opens com.potato.ray_casting_maven to aparapi;时IDE无法识别aparapi模块；使用kernel.run()可运行但仅执行单实例，无法实现并行。

1. 修正module-info.java的模块配置 #

IDE无法识别aparapi是因为模块名称错误，Aparapi的官方模块ID是com.aparapi而非aparapi。修改后的module-info.java：

module com.potato.ray_casting_maven {
    requires javafx.controls;
    requires javafx.fxml;
    requires com.aparapi;
    requires com.aparapi.jni;

    opens com.potato.ray_casting_maven to javafx.fxml, com.aparapi;
    exports com.potato.ray_casting_maven;
}

• 将requires aparapi;改为requires com.aparapi;，requires aparapi.jni;改为requires com.aparapi.jni;
• 在opens语句中添加com.aparapi，允许Aparapi框架通过反射访问模块内部字段

2. 显式指定CPU执行模式（无GPU场景） #

修正模块配置后，可强制Aparapi使用CPU线程池模式，避免OpenCL相关逻辑干扰：

• 方式一：在JVM启动参数中添加：-Dcom.aparapi.executionMode=CPU
• 方式二：在代码中提前设置：

Kernel.setExecutionMode(Kernel.EXECUTION_MODE.CPU);

3. 替换匿名内部类为静态内部类/顶级类 #

错误中的App$1说明使用了匿名内部类实现Kernel，嵌套类的字段反射访问更容易触发权限问题。建议将Kernel实现为静态内部类或独立顶级类：

public static class AddKernel extends Kernel {
    private final float[] a;
    private final float[] b;
    private final float[] sum;

    public AddKernel(float[] a, float[] b, float[] sum) {
        this.a = a;
        this.b = b;
        this.sum = sum;
    }

    @Override
    public void run() {
        int i = getGlobalId();
        sum[i] = a[i] + b[i];
    }
}

主代码中实例化执行：

AddKernel kernel = new AddKernel(a, b, sum);
kernel.execute(Range.create(size));

内容的提问来源于stack exchange，提问作者potatosaregreat