blacs_helpers.h File Reference

This file contains various BLACS helper functions. More...

#include <starneig/configuration.h>
#include <starneig/blacs_matrix.h>

Go to the source code of this file.

Functions
void	starneig_blacs_pinfo (int *my_rank, int *rank_count)
	Queries process rank information. More...
int	starneig_blacs_get (starneig_blacs_context_t context, starneig_blacs_query_id_t query)
	Returns BLACS context's internal defaults. More...
starneig_blacs_context_t	starneig_blacs_gridinit (starneig_blacs_context_t system_context, char *order, int rows, int cols)
	Initializes a BLACS process grid. More...
void	starneig_blacs_gridinfo (starneig_blacs_context_t context, int *rows, int *cols, int *row, int *col)
	Queries BLACS process grid information. More...
void	starneig_blacs_pcoord (starneig_blacs_context_t context, int process, int *row, int *col)
	Queries BLACS process grid coordinates. More...
void	starneig_blacs_gridexit (starneig_blacs_context_t context)
	Releases process grid specific resources. More...
void	starneig_blacs_exit (int cont)
	Releases all contexts and related resources. More...
int	starneig_blacs_numroc (int n, int nb, int iproc, int isrcproc, int nprocs)
	Computes the number of matrix rows/columns owned by a given process. More...
int	starneig_numroc (int n, int nb, int iproc, int isrcproc, int nprocs)
	Computes the number of matrix rows/columns owned by a given process. Deprecated. More...
int	starneig_blacs_descinit (struct starneig_blacs_descr *descr, int m, int n, int sm, int sn, int irsrc, int icsrc, starneig_blacs_context_t context, int ld)
	Initializes a BLACS descriptor. More...
int	starneig_descinit (struct starneig_blacs_descr *descr, int m, int n, int sm, int sn, int irsrc, int icsrc, starneig_blacs_context_t context, int ld)
	Initializes a BLACS descriptor. Deprecated. More...

Query indeces
#define	STARNEIG_BLACS_GET_DEFAULT_CONTEXT   0
	Query id for getting the default system context.
typedef int	starneig_blacs_query_id_t
	Data type for blacs_get() function query id.

Detailed Description

This file contains various BLACS helper functions.

Author

Mirko Myllykoski (mirko.nosp@m.m@cs.nosp@m..umu..nosp@m.se), Umeå University

LICENSE

Copyright (c) 2019-2020, Umeå Universitet

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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