packing -unpacking data with parallel virtual machine , Computer Networking

Assignment Help:

 Packing and Unpacking Data

  • pvm_packs - Pack the active message buffer with arrays of prescribed data type:
  • int info = pvm_packf( const char *fmt, ... )
  • int info = pvm_pkbyte( char *xp, int nitem, int stride )
  • int info = pvm_pkcplx( float *cp, int nitem, int stride )
  • int info = pvm_pkdcplx( double *zp, int nitem, int stride )
  • int info = pvm_pkdouble( double *dp, int nitem, int stride )
  • int info = pvm_pkfloat( float *fp, int nitem, int stride )
  • int info = pvm_pkint( int *ip, int nitem, int stride )
  • int info = pvm_pkuint( unsigned int *ip, int nitem, int stride )
  • int info = pvm_pkushort( unsigned short *ip, int nitem, int stride )
  • int info = pvm_pkulong( unsigned long *ip, int nitem, int stride )
  • int info = pvm_pklong( long *ip, int nitem, int stride )
  • int info = pvm_pkshort( short *jp, int nitem, int stride )
  • int info = pvm_pkstr( char *sp )

fmt Printf-like format expression states what to pack. nitem is the total number of items to be packed (not the number of bytes). stride is the stride to be used when packing the items.

  • pvm_unpack - Unpacks the active message buffer into arrays of given data type. It has been executed for different data types:
  • int info = pvm_unpackf( const char *fmt, ... )
  • int info = pvm_upkbyte( char *xp, int nitem, int stride)
  • int info = pvm_upkcplx( float *cp, int nitem, int stride)
  • int info = pvm_upkdcplx( double *zp, int nitem, int stride)
  • int info = pvm_upkdouble( double *dp, int nitem, int stride)
  • int info = pvm_upkfloat( float *fp, int nitem, int stride)
  • int info = pvm_upkint( int *ip, int nitem, int stride)
  • int info = pvm_upkuint( unsigned int *ip, int nitem, int stride )
  • int info = pvm_upkushort( unsigned short *ip, int nitem, int stride )
  • int info = pvm_upkulong( unsigned long *ip, int nitem, int stride )
  • int info = pvm_upklong( long *ip, int nitem, int stride)
  • int info = pvm_upkshort( short *jp, int nitem, int stride)
  • int info = pvm_upkstr( char *sp )

Each of the pvm_upk* routines unpacks an array of the specify data type from the active receive buffer. The arguments for each one of the routines are a pointer to the array to be unpacked into, nitem which is the whole number of items to unpack, and stride which is the stride to make use of when unpacking. An exception is pvm_upkstr() which by definition unpacks a NULL terminated character string and therefore does not need nitem or stride arguments.


Related Discussions:- packing -unpacking data with parallel virtual machine

Types of ospf configuration, Name the types of OSPF Configuration? Ans) ...

Name the types of OSPF Configuration? Ans) There are Two Types of OSPF configuration A ) SINGLE AREA b) MULTI AREA

Explain about wireless ethernet, Wireless Ethernet (802.11) a) Operates...

Wireless Ethernet (802.11) a) Operates on physical plus data link layers b) BSS (Basic service set) stationary or mobile wireless stations and a central base station known a

Broadcast domain and collision domain, Explain Difference between broadcast...

Explain Difference between broadcast domain and collision domain? Ans) Broadcast Domain Send the packet to all the Present Network IT might be send by the person It mig

Network, What are the advantages of logging more information to the alerts ...

What are the advantages of logging more information to the alerts filestion #Minimum 100 words accepted#

Example of parallel sections construct, This example demonstrates the use o...

This example demonstrates the use of parallel sections construct. The three functions, fun1, fun2, and fun3, all can be executed concurrently.  Note that all the section directives

Discuss your strategy to test wlpc system, Wireless Phone Company (WLPC) is...

Wireless Phone Company (WLPC) is a provider of wireless phone service in the US with 100,000 customers serving mostly small markets. WLPC has just purchased additional airwaves in

Repeater - network layer and routing, Repeater Repeater is  also named...

Repeater Repeater is  also named as active hub operates at physical  layer of OSI model. Repeater is an  electronic  device that simply regenerates the signal. Signals travell

Give the types of firewalls, Give the types of firewalls Conceptually,...

Give the types of firewalls Conceptually, there are two types of firewalls: 1.  Network Level 2.  Application Level Network Level Firewall/Packet Filters The Net

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd