RANDOM_MPI - Master process:
  C version
  The number of processors is P = 1

  This program shows how a stream of random numbers
  can be computed 'in parallel' in an MPI program.

  We assume we are using a linear congruential
  random number generator or LCRG, which takes
  an integer input and returns a new integer output:

    U = ( A * V + B ) mod C

  We assume that we want the MPI program to produce
  the same sequence of random values as a sequential
  program would - but we want each processor to compute
  one part of that sequence.

  We do this by computing a new LCRG which can compute
  every P'th entry of the original one.

  Our LCRG works with integers, but it is easy to
  turn each integer into a real number between [0,1].

  LCRG parameters:

  A  = 16807
  B  = 0
  C  = 2147483647

  Let processor 0 generate the entire random number sequence.

     K    ID         Input        Output

     0     0                       12345
     1     0         12345     207482415
     2     0     207482415    1790989824
     3     0    1790989824    2035175616
     4     0    2035175616      77048696
     5     0      77048696      24794531
     6     0      24794531     109854999
     7     0     109854999    1644515420
     8     0    1644515420    1256127050
     9     0    1256127050    1963079340
    10     0    1963079340    1683198519

  LCRG parameters for P processors:

  AN = 16807
  BN = 0
  C  = 2147483647

  Have ALL the processors participate in computing
  the same random number sequence.

     K    ID         Input        Output

     0     0                       12345
     1     0         12345     207482415
     2     0     207482415    1790989824
     3     0    1790989824    2035175616
     4     0    2035175616      77048696
     5     0      77048696      24794531
     6     0      24794531     109854999
     7     0     109854999    1644515420
     8     0    1644515420    1256127050
     9     0    1256127050    1963079340
    10     0    1963079340    1683198519

RANDOM_MPI:
  Normal end of execution.