UPC

Unified Parallel C (UPC) is an extension of the C programming language designed for high performance computing on large-scale parallel machines.The language provides a uniform programming model for both shared and distributed memory hardware. The programmer is presented with a single shared, partitioned address space, where variables may be directly read and written by any processor, but each variable is physically associated with a single processor. UPC uses a Single Program Multiple Data (SPMD) model of computation in which the amount of parallelism is fixed at program startup time, typically with a single thread of execution per processor.

Installed on: Big Ben.

Big Ben version

The version installed is 2.3.16, beta release, from Berkeley UPC - a joint project of LBNL and UC Berkeley.

To use UPC, prepare a job script containing commands to:

  • Unload the PrgEnv-pgi module, which is loaded for you by default, and load the PrgEnv-gnu and upc modules. 
    module unload PrgEnv-pgi
module load PrgEnv-gnu
module load upc
  • Compile with 
    upcc [-T=num-threads] -o prog prog.upc
  • Execute the program with: 
    pbsyod ./prog

Submit the job script with a qsub command.

Also see the example job.

See also