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Now we attack solving the PDE on multicore and multiprocessor computer architectures. The basic concept is to use worker task to do the parallel computation and a master control task, the main procedure, to keep the workers synchronized. These examples, in several languages, use the barrier method of synchronization. The first example is converting fem_check44_la.adb to a parallel version. We developed psimeq, parallel simultaneous equations solver in lecture 3b Thus we need to choose the number of processors, NP, to pass to psimeq. Then we need to parallelize the longest computation, creating the stiffness matrix, as covered in lecture 32 Care must be taken to insure no worker tasks set any variable that might by modified by any other worker task or the master task.Parallelizing Ada, FEM example
fem_check44_pla.adb fem_check44_pla_ada.out The other files needed to compile and execute include: psimeq.ada laphi.ads laphi.adb gaulegf.adb real_arrays.ads real_arrays.adb Ada barrier softwareParallelizing Java, FEM example
The first example is converting fem_check44_la.adb to a parallel version. We developed psimeq, parallel simultaneous equations solver in lecture 3b Thus we need to choose the number of processors, NP, to pass to psimeq. Then we need to parallelize the longest computation, creating the stiffness matrix, as covered in lecture 32 Care must be taken to insure no worker tasks set any variable that might by modified by any other worker task or the master task. fem_check44_pla.java fem_check44_pla_java.out
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