0 Replies Latest reply on Dec 11, 2009 11:11 PM by gmtan

    ACML-GPU & HD4870X2

    gmtan

      I want to run two mpi process on a node with a hd4870x2. Each mpi process call dgemm. I tried to set environment ACML-GPU to 0x1 and 0x2 in mpi process to decide which GPU is used. However, this method can not work: 

      noderank = 1

      gpumask = 1

      noderank = 2
      gpumask = 2
      ERROR: unable to allocate minimum GPU memory

                    Total   Available   Last Request
      Local:       1024 MB     1001 MB     16777216 (  16 MB) FAILED
      Remote (NC): 1233 MB     1211 MB            0 (   0 MB) FAILED
      Remote (C):   489 MB      489 MB            0 (   0 MB) FAILED

      ERROR: unable to allocate minimum GPU memory

                    Total   Available   Last Request
      Local:       1024 MB     1001 MB     16777216 (  16 MB) FAILED
      Remote (NC): 1233 MB     1212 MB            0 (   0 MB) FAILED
      Remote (C):   489 MB      489 MB            0 (   0 MB) FAILED

      ERROR: Failed to initialize GPUs
      ERROR: Failed to initialize GPU(s) for DGEMM

      Warning: libCALBLAS is not reentrant!
      Multi-threaded use of this library is not supported.
      When GPU-accellerated ACML routines are called on multiple threads
      concurrently, the requests will be executed serially, even if multiple
      GPUs are present.