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

Explain the following: cdma and fdma, Question 1 Explain GSM digital cellu...

Question 1 Explain GSM digital cellular System model Question 2 Explain cellular Digital Packet Data(CDPD) system with the help of CDPD network reference model Question 3

Subtract two from number of hosts, Why do we require to subtract two from n...

Why do we require to subtract two from number of hosts?

Briefly describe the purpose of windows powershell, Question: a) Brief...

Question: a) Briefly describe the purpose of Windows Powershell? b) Name ways software can be installed on Linux? c) What is an interrupt request? d) As the Networ

Whitney houston, contribution to afican American history

contribution to afican American history

Define routing, Define Routing? The process of determining systematical...

Define Routing? The process of determining systematically hoe to forward messages toward the destination nodes based on its address is known as routing.

What is icmp, What is ICMP? ICMP is Internet Control Message Protocol. ...

What is ICMP? ICMP is Internet Control Message Protocol. It gives messaging and communication for protocols within the TCP/IP stacks. This is also the protocol that manages err

Explain sonet frame transaction, Sonet Frame Transaction Transmitted ...

Sonet Frame Transaction Transmitted one subsequent to another without any gap in between. First 2 bytes - alignment bytes. F628 in Hex. - define the beginning of every

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