#include <cuda_runtime.h>
#include <stdio.h>

/***
  アプリケーションのデータサイズは一定にキープ。
  ブロックサイズの変化似合わせてグリッドサイズが変化することがわかる
*/
int main(int argc, char **argv)
{
	// データ要素の合計数を定義
	int nElem = 1024;

	// グリッドとブロックの構造を定義
	dim3 block(1024);
	dim3 grid((nElem + block.x - 1) / block.x);
	// (1024 + 1024 -1) / 1024 = 2047 / 1024 = 1 --> grid = 1
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// ブロックをリセット
	block.x = 512;
	grid.x = (nElem + block.x - 1) / block.x;
	// (1024 + 512 -1) / 512 = 1535 / 512 = 2 --> grid = 2
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// ブロックをリセット
	block.x = 256;
	grid.x = (nElem + block.x - 1) / block.x;
	// (1024 + 256 - 1) / 256 = 1279 / 256 = 4
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// ブロックをリセット
	block.x = 128;
	grid.x = (nElem + block.x - 1) / block.x;
	// (1024 + 128 - 1) / 128 = 1151 / 128 = 8
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// デバイスをリセット
	cudaDeviceReset();
}

	.file	"tmpxft_0026427e_00000000-6_defineGridBlock.cudafe1.cpp"
	.text
#APP

#NO_APP
	.type	_ZL26__cudaUnregisterBinaryUtilv, @function
_ZL26__cudaUnregisterBinaryUtilv:
.LFB2030:
	.cfi_startproc
	endbr64
	movq	_ZL20__cudaFatCubinHandle(%rip), %rdi
	jmp	__cudaUnregisterFatBinary@PLT
	.cfi_endproc
.LFE2030:
	.size	_ZL26__cudaUnregisterBinaryUtilv, .-_ZL26__cudaUnregisterBinaryUtilv
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC0:
	.string	"grid.x %d block.x %d \n"
	.section	.text.startup,"ax",@progbits
	.globl	main
	.type	main, @function
main:
.LFB2027:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	.LC0(%rip), %rbx
	movl	$1024, %ecx
	xorl	%eax, %eax
	movq	%rbx, %rsi
	movl	$1, %edx
	movl	$2, %edi
	call	__printf_chk@PLT
	movq	%rbx, %rsi
	movl	$512, %ecx
	xorl	%eax, %eax
	movl	$2, %edx
	movl	$2, %edi
	call	__printf_chk@PLT
	movq	%rbx, %rsi
	movl	$256, %ecx
	xorl	%eax, %eax
	movl	$4, %edx
	movl	$2, %edi
	call	__printf_chk@PLT
	movq	%rbx, %rsi
	movl	$128, %ecx
	xorl	%eax, %eax
	movl	$8, %edx
	movl	$2, %edi
	call	__printf_chk@PLT
	call	cudaDeviceReset@PLT
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2027:
	.size	main, .-main
	.type	_ZL24__sti____cudaRegisterAllv, @function
_ZL24__sti____cudaRegisterAllv:
.LFB2053:
	.cfi_startproc
	endbr64
	pushq	%rax
	.cfi_def_cfa_offset 16
	leaq	_ZL15__fatDeviceText(%rip), %rdi
	call	__cudaRegisterFatBinary@PLT
	movq	%rax, %rdi
	movq	%rax, _ZL20__cudaFatCubinHandle(%rip)
	call	__cudaRegisterFatBinaryEnd@PLT
	leaq	_ZL26__cudaUnregisterBinaryUtilv(%rip), %rdi
	popq	%rdx
	.cfi_def_cfa_offset 8
	jmp	atexit@PLT
	.cfi_endproc
.LFE2053:
	.size	_ZL24__sti____cudaRegisterAllv, .-_ZL24__sti____cudaRegisterAllv
	.section	.init_array,"aw"
	.align 8
	.quad	_ZL24__sti____cudaRegisterAllv
	.section	.nvFatBinSegment,"aw"
	.align 8
	.type	_ZL15__fatDeviceText, @object
	.size	_ZL15__fatDeviceText, 24
_ZL15__fatDeviceText:
	.long	1180844977
	.long	1
	.quad	fatbinData
	.quad	0
	.local	_ZL20__cudaFatCubinHandle
	.comm	_ZL20__cudaFatCubinHandle,8,8
	.ident	"GCC: (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0"
	.section	.note.GNU-stack,"",@progbits
	.section	.note.gnu.property,"a"
	.align 8
	.long	1f - 0f
	.long	4f - 1f
	.long	5
0:
	.string	"GNU"
1:
	.align 8
	.long	0xc0000002
	.long	3f - 2f
2:
	.long	0x3
3:
	.align 8
4:

#include <hip/hip_runtime.h>
#include <stdio.h>

/***
  アプリケーションのデータサイズは一定にキープ。
  ブロックサイズの変化似合わせてグリッドサイズが変化することがわかる
*/
int main(int argc, char **argv)
{
	// データ要素の合計数を定義
	int nElem = 1024;

	// グリッドとブロックの構造を定義
	dim3 block(1024);
	dim3 grid((nElem + block.x - 1) / block.x);
	// (1024 + 1024 -1) / 1024 = 2047 / 1024 = 1 --> grid = 1
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// ブロックをリセット
	block.x = 512;
	grid.x = (nElem + block.x - 1) / block.x;
	// (1024 + 512 -1) / 512 = 1535 / 512 = 2 --> grid = 2
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// ブロックをリセット
	block.x = 256;
	grid.x = (nElem + block.x - 1) / block.x;
	// (1024 + 256 - 1) / 256 = 1279 / 256 = 4
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// ブロックをリセット
	block.x = 128;
	grid.x = (nElem + block.x - 1) / block.x;
	// (1024 + 128 - 1) / 128 = 1151 / 128 = 8
	printf("grid.x %d block.x %d \n", grid.x, block.x);

	// デバイスをリセット
	hipDeviceReset();
}

	.text
	.file	"defineGridBlock.hip"
	.globl	main                            # -- Begin function main
	.type	main,@function
main:                                   # @main
	.cfi_startproc
# %bb.0:
	pushq	%rax
	.cfi_def_cfa_offset 16
	movl	$.L.str, %edi
	movl	$1, %esi
	movl	$1024, %edx                     # imm = 0x400
	xorl	%eax, %eax
	callq	printf
	movl	$.L.str, %edi
	movl	$2, %esi
	movl	$512, %edx                      # imm = 0x200
	xorl	%eax, %eax
	callq	printf
	movl	$.L.str, %edi
	movl	$4, %esi
	movl	$256, %edx                      # imm = 0x100
	xorl	%eax, %eax
	callq	printf
	movl	$.L.str, %edi
	movl	$8, %esi
	movl	$128, %edx
	xorl	%eax, %eax
	callq	printf
	callq	hipDeviceReset
	xorl	%eax, %eax
	popq	%rcx
	.cfi_def_cfa_offset 8
	retq
.Lfunc_end0:
	.size	main, .Lfunc_end0-main
	.cfi_endproc
                                        # -- End function
	.type	.L.str,@object                  # @.str
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str:
	.asciz	"grid.x %d block.x %d \n"
	.size	.L.str, 23

	.type	__hip_cuid_,@object             # @__hip_cuid_
	.bss
	.globl	__hip_cuid_
__hip_cuid_:
	.byte	0                               # 0x0
	.size	__hip_cuid_, 1

	.ident	"AMD clang version 18.0.0git (https://github.com/RadeonOpenCompute/llvm-project roc-6.3.2 25012 e5bf7e55c91490b07c49d8960fa7983d864936c4)"
	.section	".note.GNU-stack","",@progbits
	.addrsig
	.addrsig_sym __hip_cuid_

	.text
	.p2alignl 7, 3214868480
	.fill 96, 4, 3214868480
	.type	__hip_cuid_,@object             ; @__hip_cuid_
	.section	.bss,"aw",@nobits
	.globl	__hip_cuid_
__hip_cuid_:
	.byte	0                               ; 0x0
	.size	__hip_cuid_, 1

	.ident	"AMD clang version 18.0.0git (https://github.com/RadeonOpenCompute/llvm-project roc-6.3.2 25012 e5bf7e55c91490b07c49d8960fa7983d864936c4)"
	.section	".note.GNU-stack","",@progbits
	.addrsig
	.addrsig_sym __hip_cuid_
	.amdgcn_target "amdgcn-amd-amdhsa--gfx1100"
	.amdgpu_metadata
---
amdhsa.kernels:  []
amdhsa.target:   amdgcn-amd-amdhsa--gfx1100
amdhsa.version:
  - 1
  - 2
...

	.end_amdgpu_metadata
