Data Type

Integer

Default Value

2

Description

This parameter controls the amount of printed output produced by calls to the vector-diagonal-vector multiply routine RSDDVM, RNDDVM, CHDDVM, CSDDVM, CNDDVM. The print code summary table lists the values of IPRDV and the output produced.

The following is a detailed description of each option. The value of IPRDV you specify is obtained by adding together the numeric value of each option you select. Because these numeric values are a power of 2, they have the effect of setting bits in IPRDV.

  • 0, No output from vector-diagonal-vector multiply is printed.
  • +1, Start and stop timing is printed. The following is an example: 
     START OF VECTORS-DIAGONAL-VECTORS MULTIPLY
 END   OF VECTORS-DIAGONAL-VECTORS MULTIPLY.
 TIME(SEC): CPU   =       2.484,        WALL=       2.516
  • +2, Timing information for each vector group is printed. The following is an example: 
     F M S     V E C T O R S   -   D I A G.   -   V E C T O R S     M U L T I P L Y
 <----FUNCTION--->   <--VECTORS-->     <-CPU  TIME(SEC)->     <-WALL TIME(SEC)->
                     FIRST    LAST     DELTA        TOTAL     DELTA        TOTAL
 V*D*V MULTIPLY          1      54     1.668        1.668     1.749        1.749
 V*D*V MULTIPLY         55     100     0.795        2.463     0.849        2.598
  • +4, The {X} and {Y} vectors are printed before multiplication.
  • +8, The output matrix [F] = {X}T[D]{Y} is printed.
  • +16, The {X} vectors are printed after diagonal multiplication, {X}T[D].
  • +64, The diagonal matrix [D] is printed.
  • +1024, The actual performance achieved in Megaflops is printed.
    This computation is based on an actual count of the number of floating point operations (adds and multiplies) required and the actual time spent.

CAUTION: For large problems this parameter can produce a lot of output. You can use the FMS Parameters NEQPR1 and NEQPR2 to create a window on the matrix and vector terms printed.