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Tutorial 1

Tutorial 1. Q1: Compare and contrast between multiprocessors and multicore. Multicore Dual-core processor has two cores (e.g. AMD Phenom II X2, Intel Core Duo),

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Tutorial 1

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  1. Tutorial 1

  2. Q1: Compare and contrast between multiprocessors and multicore • Multicore • Dual-core processor has two cores (e.g. AMD Phenom II X2, Intel Core Duo), • Quad-core processor contains four cores (e.g. AMD Phenom II X4, intel's quad-core processors, see i3, i5, and i7 at Intel Core), • Hexa-core processor contains six cores (e.g. AMD Phenom II X6, Intel Core i7 Extreme Edition 980X), • Octa-core processor contains eight cores (e.g. Intel Xeon E7-2820). wikipedia

  3. Q2 : List and discuss different compilers for Java programming language. • A Java compiler is a compiler for the Java programming language. The most common form of output from a Java compiler is Java class files containing platform-neutral Java bytecode. There exist also compilers emitting optimized native machine code for a particular hardware/operating system combination. • As of 2010, the following are major Java compilers: • Javac "java-see", included in JDK from Sun Microsystems, open-sourced since 13 November 2006. • GNU Compiler for Java, a part of the GNU Compiler Collection, which compiles C, Fortran, Pascal and other programming languages besides Java. It can also generate native codeusing the back-end of GCC. • ECJ, the Eclipse Compiler for Java, is an open source incremental compiler used by the Eclipse project. http://en.wikipedia.org/wiki/Java_compiler

  4. Exercise • Go to command prompt: • Open a notepad and write the following code. Save it as HelloWorld.java class HelloWorld { public static void main(String args[]) { System.out.println("Hello World!"); } }

  5. Exercise • Run Command Prompt (found under All Programs/Accessories in the Start menu).  • Type • C:\> cd \mywork • This makes C:\mywork the current directory. • C:\mywork> dir • This displays the directory contents.  • You should see HelloWorld.java among the files. • C:\mywork> set path=%path%;C:\Program Files\Java\jdk1.5.0_09\bin • This tells the system where to find JDK programs. • C:\mywork> javacHelloWorld.javaThis runs javac.exe, the compiler.  • You should see nothing but the next system prompt... • C:\mywork> dir • javac has created the HelloWorld.class file.  • You should see HelloWorld.java andHelloWorld.class among the files • .C:\mywork> java HelloWorld • This runs the Java interpreter.  • You should see the program output:Hello, World! • If the system cannot find javac, check the set path command.  • If javac runs but you get errors, check your Java text.  • If the program compiles but you get an exception, check the spelling and capitalization in the file name and the class name and the java HelloWorld command.  Java is case-sensitive!  http://www.skylit.com/javamethods/faqs/javaindos.html

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