8.3.8 pvnrm2

La función "PyPBLAS.pvnrm2" calcula la norma de un vector x. Este vector de entrada x deberá ser del tipo PyACTS por lo que habrá que utilizar las funciones que convierten de otros tipos a PyACTS. Las características de cada uno de los parámetros son las siguientes:

from PyACTS import *
import PyPBLAS
from RandomArray import *
from Numeric import *

#Dimension of Arrays
n=4
#Initiliaze the Grid
PyACTS.gridinit()
if PyACTS.iread==1:
        print "Example of using PyPBLAS: PvNRM2"
        print "Parameters:N=",n,";Grid:",PyACTS.nprow,"*",PyACTS.npcol
        print "Block's size:",PyACTS.mb,"*",PyACTS.nb
        x=2*ones([n,1],Float)
        print "x'=",transpose(x)
else:
        x,y=None,None
#We convert Numeric Array to PyACTS.Scalapack Array
ACTS_lib=1 # 1=Scalapack
x=Num2PyACTS(x,ACTS_lib)
#We call PyPblas Routine
nrm2= PyPBLAS.pvnrm2(x)
if PyACTS.iread==1:
        print "PvNRM2=",nrm2
PyACTS.gridexit()

from PyACTS import *
import PyPBLAS
from RandomArray import *
from Numeric import *

#Dimension of Arrays
n=4
#Initiliaze the Grid
PyACTS.gridinit()
if PyACTS.iread==1:
        print "Example of using PyPBLAS: PvNRM2"
        print "Parameters:N=",n,";Grid:",PyACTS.nprow,"*",PyACTS.npcol
        print "Block's size:",PyACTS.mb,"*",PyACTS.nb
        x=2*ones([n,1],Float)
        print "x'=",transpose(x)
else:
        x,y=None,None
#We convert Numeric Array to PyACTS.Scalapack Array
ACTS_lib=1 # 1=Scalapack
x=Num2PyACTS(x,ACTS_lib)
#We call PyPblas Routine
nrm2= PyPBLAS.pvnrm2(x)
if PyACTS.iread==1:
        print "PvNRM2=",nrm2
PyACTS.gridexit()