adam_prism_fnl_leapfrog_pic_object

ADAM, PRISM PIC leapfrog integrator, FNL backend.

Source: src/app/prism/fnl/adam_prism_fnl_leapfrog_pic_object.F90

Dependencies

Contents

• prism_fnl_leapfrog_pic_object
• destroy
• initialize
• copy_cpu_gpu
• copy_gpu_cpu
• assign_step
• prime_step
• integrate

Variables

Name	Type	Attributes	Description
PIC_VARIABLES_NUMBER	integer(kind=I4P)	parameter

Derived Types

prism_fnl_leapfrog_pic_object

Components

Name	Type	Attributes	Description
q_pic_old_gpu	real(kind=R8P)	pointer	Leapfrog history [particle, variable, step].
buf_q_pic_old_R8P	real(kind=R8P)	allocatable	Host buffer with device layout for q_pic_old copies.
nu	real(kind=R8P)		RAW filter coefficient.
alpha	real(kind=R8P)		RAW-Williams coefficient.
is_filtered	logical		Enable RAW filter.
particle_number	integer(kind=I4P)		Total number of particles.

Type-Bound Procedures

Name	Attributes	Description
copy_cpu_gpu	pass(self)
copy_gpu_cpu	pass(self)
destroy	pass(self)
initialize	pass(self)
assign_step	pass(self)
prime_step	pass(self)
integrate	pass(self)

Subroutines

destroy

Free device and host staging data owned by this object.

subroutine destroy(self)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.

Call graph

initialize

Initialize device-side PIC leapfrog state.

subroutine initialize(self, pic, leapfrog_pic)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.
pic	type(prism_pic_object)	in		Host PIC object.
leapfrog_pic	type(prism_leapfrog_pic_object)	in		Host PIC leapfrog object.

Call graph

copy_cpu_gpu

Copy host leapfrog PIC history to the device mirror.

subroutine copy_cpu_gpu(self, q_pic_old, verbose)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.
q_pic_old	real(kind=R8P)	in	target	Host leapfrog history.
verbose	logical	in	optional	Trigger verbose output.

Call graph

copy_gpu_cpu

Copy device leapfrog PIC history back to the host mirror.

subroutine copy_gpu_cpu(self, q_pic_old, verbose)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.
q_pic_old	real(kind=R8P)	inout	target	Host leapfrog history.
verbose	logical	in	optional	Trigger verbose output.

Call graph

assign_step

Store one PIC state in the device leapfrog history buffer.

subroutine assign_step(self, s, q_pic_gpu)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.
s	integer(kind=I4P)	in		Leapfrog history slot.
q_pic_gpu	real(kind=R8P)	in		PIC variables on device.

Call graph

prime_step

Perform the explicit Euler priming step for PIC leapfrog on device.

subroutine prime_step(self, dt, q_pic_gpu, pic_fields_gpu)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.
dt	real(kind=R8P)	in		Time step.
q_pic_gpu	real(kind=R8P)	inout		PIC variables on device.
pic_fields_gpu	real(kind=R8P)	in		Fields at particle locations on device.

integrate

Integrate PIC particles with leapfrog on device.

subroutine integrate(self, dt, q_pic_gpu, pic_fields_gpu)

Arguments

Name	Type	Intent	Attributes	Description
self	class(prism_fnl_leapfrog_pic_object)	inout		FNL PIC leapfrog object.
dt	real(kind=R8P)	in		Time step.
q_pic_gpu	real(kind=R8P)	inout		PIC variables on device.
pic_fields_gpu	real(kind=R8P)	in		Fields at particle locations on device.

Call graph