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For the two applications described above, we have
sequential and parallel programs to compare performance.
The sequential programs were written in Java and/or Fortran 95.
The parallel programs, of course, were written in HPJava.
For multigrid we also compare with an available HPF code
(taken from ).
The experiments were performed on the SP3 installation at
Florida State University. The system environment for SP3 runs
were as follows:
For best performance, all sequential and parallel Fortran and Java codes
were compiled using -O5 or -O3 with -qhot or -O (i.e. maximum optimization)
- System: IBM SP3 supercomputing system with AIX 4.3.3 operating system and
- CPU: A node has Four processors (Power3 375 MHz) and 2 gigabytes of
- Network MPI Settings: Shared ``css0'' adapter with User Space(US)
- Java VM: IBM 's JIT
- Java Compiler: IBM J2RE 1.3.1