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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Error JNAerating CLDGEMMKernels.cl: NullPointerException","articleBody":"get NullPointerException, when tried to build the following code\n# define WIDTH 4\n# if WIDTH == 1\n\n```\ntypedef float floatX;\n```\n# elif WIDTH == 2\n\n```\ntypedef float2 floatX;\n```\n# elif WIDTH == 4\n\n```\ntypedef float4 floatX;\n```\n# endif\n\n// Use wider data types\n__kernel void gemm4(const int M, const int N, const int K,\n                      const __global double\\* A,\n                      const __global double\\* B,\n                      __global double\\* C) {\n\n```\n// Thread identifiers\nconst int row = get_local_id(0); // Local row ID (max: TS/WIDTH)\nconst int col = get_local_id(1); // Local col ID (max: TS)\nconst int globalRow = (TS/WIDTH)*get_group_id(0) + row; // 0..M/WIDTH\nconst int globalCol = TS*get_group_id(1) + col; // 0..N\n\n// Local memory to fit a tile of TS*TS elements of A and B\n__local floatX Asub[TS][TS/WIDTH];\n__local floatX Bsub[TS][TS/WIDTH];\n\n// Initialize the accumulation registers\n#if WIDTH == 1\n    floatX acc = 0.0f;\n#elif WIDTH == 2\n    floatX acc = { 0.0f, 0.0f };\n#elif WIDTH == 4\n    floatX acc = { 0.0f, 0.0f, 0.0f, 0.0f };\n#endif\n\n// Loop over all tiles\nconst int numTiles = K/TS;\n```\n\n...\n}\n\nafter replace with\n    int ts = TS;\n    const int numTiles = K/ts;\n\nbuilds fine.\n\n[INFO] ------------------------------------------------------------------------\n[ERROR] Failed to execute goal com.nativelibs4java:maven-javacl-plugin:1.0.0-RC4:compile (default) on project clqr: Error JNAerating CLDGEMMKernels.cl: NullPointerException -\u003e [Help 1]\norg.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.nativelibs4java:maven-javacl-plugin:1.0.0-RC4:compile (default) on project clqr: Error JNAerating CLDGEMMKernels.cl\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)\n    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)\n    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)\n    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)\n    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)\n    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)\n    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)\n    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)\n    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)\n    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n    at java.lang.reflect.Method.invoke(Method.java:498)\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)\n    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)\n    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)\n    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)\nCaused by: org.apache.maven.plugin.MojoExecutionException: Error JNAerating CLDGEMMKernels.cl\n    at com.nativelibs4java.opencl.generator.JavaCLGeneratorMojo.generateAll(JavaCLGeneratorMojo.java:191)\n    at com.nativelibs4java.opencl.generator.JavaCLGeneratorMojo.execute(JavaCLGeneratorMojo.java:210)\n    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)\n    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)\n    ... 19 more\nCaused by: java.lang.NullPointerException\n    at com.ochafik.lang.jnaerator.TypeConversion.convertExpressionToJava(TypeConversion.java:1223)\n    at com.ochafik.lang.jnaerator.BridJTypeConversion.convertExpressionToJava(BridJTypeConversion.java:488)\n    at com.ochafik.lang.jnaerator.DeclarationsConverter.convertConstant(DeclarationsConverter.java:206)\n    at com.ochafik.lang.jnaerator.DeclarationsConverter$1.visitVariablesDeclaration(DeclarationsConverter.java:176)\n    at com.ochafik.lang.jnaerator.parser.VariablesDeclaration.accept(VariablesDeclaration.java:41)\n    at com.ochafik.lang.jnaerator.parser.Scanner.visit(Scanner.java:479)\n    at com.ochafik.lang.jnaerator.parser.Scanner.visitBlock(Scanner.java:378)\n    at com.ochafik.lang.jnaerator.parser.Statement$Block.accept(Statement.java:379)\n    at com.ochafik.lang.jnaerator.parser.Scanner.visit(Scanner.java:468)\n    at com.ochafik.lang.jnaerator.parser.Scanner.visitFunction(Scanner.java:106)\n    at com.ochafik.lang.jnaerator.parser.Function.accept(Function.java:215)\n    at com.ochafik.lang.jnaerator.parser.Scanner.visit(Scanner.java:479)\n    at com.ochafik.lang.jnaerator.parser.Scanner.visitSourceFile(Scanner.java:235)\n    at com.ochafik.lang.jnaerator.parser.SourceFile.accept(SourceFile.java:101)\n    at com.ochafik.lang.jnaerator.SourceFiles.accept(SourceFiles.java:49)\n    at com.ochafik.lang.jnaerator.DeclarationsConverter.convertConstants(DeclarationsConverter.java:128)\n    at com.nativelibs4java.opencl.generator.JavaCLGenerator.generateLibraryFiles(JavaCLGenerator.java:470)\n    at com.ochafik.lang.jnaerator.JNAerator.jnaerationCore(JNAerator.java:1465)\n    at com.ochafik.lang.jnaerator.JNAerator.jnaerate(JNAerator.java:1018)\n    at com.nativelibs4java.opencl.generator.JavaCLGeneratorMojo.generateAll(JavaCLGeneratorMojo.java:160)\n    ... 22 more\n","author":{"url":"https://github.com/fossil","@type":"Person","name":"fossil"},"datePublished":"2016-05-22T12:29:50.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/34/JavaCL/issues/34"}