diskMatrixModule.f90 File Reference

General rectangular matrix with disk storage. More...

Data Types
type	diskmatrixmodule::diskmatrixtype
	Data type representing a rectangular matrix with disk storage. More...

Modules
module	diskmatrixmodule
	Module for general rectangular matrices with disk storage,.

Functions/Subroutines
integer function	diskmatrixmodule::dmgetswapsize (n1, n2, autoRamSizeRatio)
	Returns requested size of one swap section from command-line option. More...
subroutine	diskmatrixmodule::dmnullify (this)
	Initializes a disk matrix object. More...
subroutine	diskmatrixmodule::dmwrite (this, lpu, name)
	Writes out the content of a disk matrix. More...
subroutine	diskmatrixmodule::dmopen (this, fileName, fileChkSum, nRows, nCols, status, err, nColSwap, swapSize, wantTag)
	Opens a disk matrix file for Read/Write or ReadOnly operations. More...
integer function	adjustswapsize (nTot, nSwap)
	Adjusts the number of matrix columns in a swap section. More...
subroutine	diskmatrixmodule::dmsetreadonly (this, err, isReadOnly)
	Toggles between Read/Write and ReadOnly. More...
integer(i8) function	diskmatrixmodule::dmsize (this, iDim)
	Returns the size of the given disk matrix. More...
subroutine	diskmatrixmodule::dmclose (this, err)
	Closes the disk matrix file and releases the associated swap array. More...
subroutine, private	diskmatrixmodule::dmgetaddress (this, rInd, cInd, section, index, err)
	Gets swap section number and local array index for matrix element. More...
subroutine, private	diskmatrixmodule::dmswap (this, newSection, err)
	Writes current section to disk and reads a new one into core. More...
subroutine, private	diskmatrixmodule::dmsingledoublecast (this, ielSwap, nelSwap, toSingle)
	Casts the in-core matrix elements to/from single precision. More...
subroutine	diskmatrixmodule::dmsetvalue (this, value, rInd, cInd, err)
	Assigns a value to a matrix element. More...
real(dp) function	diskmatrixmodule::dmgetvalue (this, rInd, cInd, err)
	Returns the value of a matrix element. More...
real(dp) function, dimension(:,:), pointer	diskmatrixmodule::dmgetswapsecptr (this, cInd, err)
	Returns a pointer to a matrix containing a swap section. More...
real(dp) function, dimension(:), pointer	diskmatrixmodule::dmgetcolptr (this, cInd, err)
	Returns a pointer to column cInd of the given disk matrix. More...
subroutine	diskmatrixmodule::dmgetcol (this, cInd, col, err)
	Gets a column of the given disk matrix. More...
subroutine	diskmatrixmodule::dmgetrow (this, rInd, row, err)
	Gets a row of the given disk matrix. More...
subroutine	diskmatrixmodule::dmmattimesvec (this, xVec, yVec, err, doInitialize)
	Multiplies a disk matrix with a given vector. More...
subroutine	diskmatrixmodule::dmmattranstimesvec (this, xVec, yVec, err)
	Multiplies the transpose of a disk matrix with a given vector. More...
subroutine	diskmatrixmodule::dmfindabsmaxrowvalues (this, maxRowVal, err)
	Finds the absolute maximum value for each row in a disk matrix. More...

Variables
integer, parameter	diskmatrixmodule::dmold_p = 0
	ReadOnly matrix. More...
integer, parameter	diskmatrixmodule::dmnsp_p = 1
	Write matrix in single precision. More...
integer, parameter	diskmatrixmodule::dmndp_p = 2
	Write matrix in double precision. More...

Detailed Description

General rectangular matrix with disk storage.

Function/Subroutine Documentation

adjustswapsize()

integer function dmopen::adjustswapsize	(	integer, intent(in)	nTot,
		integer, intent(in)	nSwap
	)

Adjusts the number of matrix columns in a swap section.

Parameters

[in]	nTot	Total number of matrix columns
[in]	nSwap	Number of swap sections

Returns

Number of columns in all swap sections, except for the last one

The number of columns is set such that the total number of columns in the matrix is nearly divisable by the number of swap columns, and such that the last swap section is as close in size as possisble to the other sections.