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mpi_alm2map*
This subroutine implements MPI parallelization of the serial alm2map
routine. It supports both temperature and polarization inputs in both
single and double precision. It must only be run by the root node of
the MPI communicator.
Location in HEALPix directory tree:
src/f90/mod/mpi_alm_tools.f90
FORMAT call mpi_alm2map*(
alms, map
)
ARGUMENTS
| name & dimensionality |
kind |
in/out |
description |
|---|
| |
|
|
|
|
alms(1:nmaps,0:lmax,0:nmax) |
SPC or DPC |
IN |
Input alms. If
nmaps=1, only temperature information is included; if nmaps=3,
polarization information is included |
| map(0:npix,1:nmaps) |
SP or DP |
OUT |
Output map. nmaps must match
that of the input alms array. |
EXAMPLE:
call mpi_comm_rank(comm, myid, ierr)
if (myid == root) then
call mpi_initialize_alm_tools(comm, nsmax, nlmax, nmmax,
zbounds,polarization, precompute_plms)
call mpi_alm2map(alms, map)
else
call mpi_initialize_alm_tools(comm)
call mpi_alm2map_slave
end
call mpi_cleanup_alm_tools
This example 1) initializes the mpi_alm_tools module (i.e.,
allocates internal arrays and defines required parameters), 2)
executes a parallel alm2map operation, and 3) frees the previously
allocated memory.
MODULES & ROUTINESThis section lists the modules and routines used by mpi_alm2map*.
-
alm_tools
- module
RELATED ROUTINESThis section lists the routines related to mpi_alm2map*
-
mpi_cleanup_alm_tools
- Frees memory that is allocated by the current routine.
-
mpi_initialize_alm_tools
- Allocates memory and defines variables for the mpi_alm_tools module.
-
mpi_alm2map_slave
- Routine for executing a parallel inverse spherical harmonics transform (slave processor interface)
-
mpi_map2alm
- Routine for executing a parallel spherical harmonics transform (root processor interface)
-
mpi_map2alm_slave
- Routine for executing a parallel spherical harmonics transform (slave processor interface)
-
mpi_alm2map_simple
- One-line interface to the parallel inverse spherical harmonics transform
-
mpi_map2alm_simple
- One-line interface to the parallel spherical harmonics transform
Eric Hivon
2010-06-18
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