#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>

#define N (1<<24)
#define THREADS_PER_BLOCK 512
#define BLOCK_NUM (N + THREADS_PER_BLOCK - 1)/THREADS_PER_BLOCK // 1<<15 block 

void random_floats(float *x, int Num);
__global__ void kernel1(float *a, float *b, float *out, int n);
__global__ void kernel2WithAtomicOp(float *a, float *b, float *out, int n);

int main(void){
  printf("N: %d, block num: %d\n", N, BLOCK_NUM);
  // initialization
  float *a, *b, *reduce, *sum;
  a = (float *)malloc(N * sizeof(float));
  random_floats(a, N);
  b = (float *)malloc(N * sizeof(float));
  random_floats(b, N);
  reduce = (float *)malloc(BLOCK_NUM * sizeof(float));
  sum = (float *)malloc(sizeof(float));
  *sum = 0;
  // cudaEvent initialization
  cudaEvent_t start, stop;
  cudaEventCreate(&start);
  cudaEventCreate(&stop);

  // create space on gpu side
  float *da, *db, *dreduce, *dsum;
  cudaMalloc((void **)&da, N * sizeof(float));
  cudaMalloc((void **)&db, N * sizeof(float));
  cudaMalloc((void **)&dreduce, BLOCK_NUM * sizeof(float));
  cudaMalloc((void **)&dsum, sizeof(float));

  // copy from cpu to gpu
  cudaMemcpy(da, a, N*sizeof(float), cudaMemcpyHostToDevice);
  cudaMemcpy(db, b, N*sizeof(float), cudaMemcpyHostToDevice);
  cudaMemcpy(dsum, sum, sizeof(float), cudaMemcpyHostToDevice);

  // kernel1: shared memory + parallel reduction
  cudaEventRecord(start);
  kernel1<<<BLOCK_NUM, THREADS_PER_BLOCK>>>(da, db, dreduce, N);
  cudaEventRecord(stop);
  //// copy back to cpu
  cudaMemcpy(reduce, dreduce, BLOCK_NUM*sizeof(float), cudaMemcpyDeviceToHost);
  //// add up all elements in reduce
  *sum = 0;
  for (int i = 0; i < BLOCK_NUM; i++)
    *sum += reduce[i];
  printf("result from Kernel1 with sum on CPU side: %f\n", *sum);
  cudaEventSynchronize(stop);
  float milliseconds = 0;
  cudaEventElapsedTime(&milliseconds, start, stop);
  printf("kernel 1 execution time: %f milliseconds\n\n", milliseconds);


  // kernel2: shared memory + parallel reduction + atomic operation
  cudaEventRecord(start);
  kernel2WithAtomicOp<<<BLOCK_NUM, THREADS_PER_BLOCK>>>(da, db, dsum, N);
  cudaEventRecord(stop);
  //// copy back to cpu
  cudaMemcpy(sum, dsum, sizeof(float), cudaMemcpyDeviceToHost);
  printf("result from Kernel2 with sum on GPU side: %f\n", *sum);
  cudaEventSynchronize(stop);
  milliseconds = 0;
  cudaEventElapsedTime(&milliseconds, start, stop);
  printf("kernel 2 execution time: %f milliseconds\n\n", milliseconds);

  free(a);  free(b);  free(reduce);  free(sum);
  cudaFree(da);  cudaFree(db);  cudaFree(dreduce);  cudaFree(dsum);
  cudaEventDestroy(start);  cudaEventDestroy(stop);
  return 0;
}

void random_floats(float *x, int Num)
{
  for (int i = 0; i < Num; i++)
  {
    x[i] = (float)rand() / RAND_MAX;
  }
}

__global__ void kernel1(float *a, float *b, float *out, int n){
  __shared__ float sdata[THREADS_PER_BLOCK];
  int tid = threadIdx.x;
  int index = threadIdx.x + blockIdx.x * blockDim.x;
  sdata[tid] = 0.0;
  if (index < n)
    sdata[tid] = a[index] * b[index];
  __syncthreads();

  for (int s = 1; s < blockDim.x; s *= 2){
    int ix = 2 * s * tid;
    if (ix < blockDim.x)
      sdata[ix] += sdata[ix+s];
    __syncthreads();
  }
  if (tid == 0) out[blockIdx.x] = sdata[0]; 
}

__global__ void kernel2WithAtomicOp(float *a, float *b, float *out, int n){
  __shared__ float sdata[THREADS_PER_BLOCK];
  int tid = threadIdx.x;
  int index = threadIdx.x + blockIdx.x * blockDim.x;
  sdata[tid] = 0.0;
  if (index < n)
    sdata[tid] = a[index] * b[index];
  __syncthreads();

  for (int s = 1; s < blockDim.x; s *= 2){
    int ix = 2 * s * tid;
    if (ix < blockDim.x)
      sdata[ix] += sdata[ix+s];
    __syncthreads();
  }
  if (tid == 0)
    atomicAdd(out, sdata[0]);
}

	.file	"tmpxft_002d9e9d_00000000-6_assign2.cudafe1.cpp"
	.text
#APP

#NO_APP
	.type	_ZL26__cudaUnregisterBinaryUtilv, @function
_ZL26__cudaUnregisterBinaryUtilv:
.LFB2031:
	.cfi_startproc
	endbr64
	movq	_ZL20__cudaFatCubinHandle(%rip), %rdi
	jmp	__cudaUnregisterFatBinary@PLT
	.cfi_endproc
.LFE2031:
	.size	_ZL26__cudaUnregisterBinaryUtilv, .-_ZL26__cudaUnregisterBinaryUtilv
	.globl	_Z13random_floatsPfi
	.type	_Z13random_floatsPfi, @function
_Z13random_floatsPfi:
.LFB2028:
	.cfi_startproc
	endbr64
	pushq	%r12
	.cfi_def_cfa_offset 16
	.cfi_offset 12, -16
	movq	%rdi, %r12
	pushq	%rbp
	.cfi_def_cfa_offset 24
	.cfi_offset 6, -24
	movl	%esi, %ebp
	pushq	%rbx
	.cfi_def_cfa_offset 32
	.cfi_offset 3, -32
	xorl	%ebx, %ebx
.L3:
	cmpl	%ebx, %ebp
	jle	.L7
	call	rand@PLT
	cvtsi2ssl	%eax, %xmm0
	mulss	.LC0(%rip), %xmm0
	movss	%xmm0, (%r12,%rbx,4)
	incq	%rbx
	jmp	.L3
.L7:
	popq	%rbx
	.cfi_def_cfa_offset 24
	popq	%rbp
	.cfi_def_cfa_offset 16
	popq	%r12
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2028:
	.size	_Z13random_floatsPfi, .-_Z13random_floatsPfi
	.globl	_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i
	.type	_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i, @function
_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i:
.LFB2053:
	.cfi_startproc
	endbr64
	subq	$152, %rsp
	.cfi_def_cfa_offset 160
	movq	%rdi, 24(%rsp)
	leaq	56(%rsp), %rdi
	movq	%rsi, 16(%rsp)
	leaq	68(%rsp), %rsi
	movq	%rdx, 8(%rsp)
	leaq	40(%rsp), %rdx
	movl	%ecx, 4(%rsp)
	leaq	48(%rsp), %rcx
	movq	%fs:40, %rax
	movq	%rax, 136(%rsp)
	xorl	%eax, %eax
	leaq	24(%rsp), %rax
	movl	$1, 64(%rsp)
	movq	%rax, 104(%rsp)
	leaq	16(%rsp), %rax
	movq	%rax, 112(%rsp)
	leaq	8(%rsp), %rax
	movq	%rax, 120(%rsp)
	leaq	4(%rsp), %rax
	movq	%rax, 128(%rsp)
	movabsq	$4294967297, %rax
	movq	%rax, 56(%rsp)
	movq	%rax, 68(%rsp)
	movl	$1, 76(%rsp)
	call	__cudaPopCallConfiguration@PLT
	testl	%eax, %eax
	jne	.L8
	pushq	48(%rsp)
	.cfi_def_cfa_offset 168
	leaq	_Z7kernel1PfS_S_i(%rip), %rdi
	pushq	48(%rsp)
	.cfi_def_cfa_offset 176
	movq	84(%rsp), %rcx
	movl	92(%rsp), %r8d
	movq	72(%rsp), %rsi
	movl	80(%rsp), %edx
	leaq	120(%rsp), %r9
	call	cudaLaunchKernel@PLT
	popq	%rax
	.cfi_def_cfa_offset 168
	popq	%rdx
	.cfi_def_cfa_offset 160
.L8:
	movq	136(%rsp), %rax
	subq	%fs:40, %rax
	je	.L10
	call	__stack_chk_fail@PLT
.L10:
	addq	$152, %rsp
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2053:
	.size	_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i, .-_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i
	.globl	_Z7kernel1PfS_S_i
	.type	_Z7kernel1PfS_S_i, @function
_Z7kernel1PfS_S_i:
.LFB2054:
	.cfi_startproc
	endbr64
	jmp	_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i
	.cfi_endproc
.LFE2054:
	.size	_Z7kernel1PfS_S_i, .-_Z7kernel1PfS_S_i
	.globl	_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i
	.type	_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i, @function
_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i:
.LFB2055:
	.cfi_startproc
	endbr64
	subq	$152, %rsp
	.cfi_def_cfa_offset 160
	movq	%rdi, 24(%rsp)
	leaq	56(%rsp), %rdi
	movq	%rsi, 16(%rsp)
	leaq	68(%rsp), %rsi
	movq	%rdx, 8(%rsp)
	leaq	40(%rsp), %rdx
	movl	%ecx, 4(%rsp)
	leaq	48(%rsp), %rcx
	movq	%fs:40, %rax
	movq	%rax, 136(%rsp)
	xorl	%eax, %eax
	leaq	24(%rsp), %rax
	movl	$1, 64(%rsp)
	movq	%rax, 104(%rsp)
	leaq	16(%rsp), %rax
	movq	%rax, 112(%rsp)
	leaq	8(%rsp), %rax
	movq	%rax, 120(%rsp)
	leaq	4(%rsp), %rax
	movq	%rax, 128(%rsp)
	movabsq	$4294967297, %rax
	movq	%rax, 56(%rsp)
	movq	%rax, 68(%rsp)
	movl	$1, 76(%rsp)
	call	__cudaPopCallConfiguration@PLT
	testl	%eax, %eax
	jne	.L13
	pushq	48(%rsp)
	.cfi_def_cfa_offset 168
	leaq	_Z19kernel2WithAtomicOpPfS_S_i(%rip), %rdi
	pushq	48(%rsp)
	.cfi_def_cfa_offset 176
	movq	84(%rsp), %rcx
	movl	92(%rsp), %r8d
	movq	72(%rsp), %rsi
	movl	80(%rsp), %edx
	leaq	120(%rsp), %r9
	call	cudaLaunchKernel@PLT
	popq	%rax
	.cfi_def_cfa_offset 168
	popq	%rdx
	.cfi_def_cfa_offset 160
.L13:
	movq	136(%rsp), %rax
	subq	%fs:40, %rax
	je	.L15
	call	__stack_chk_fail@PLT
.L15:
	addq	$152, %rsp
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2055:
	.size	_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i, .-_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i
	.globl	_Z19kernel2WithAtomicOpPfS_S_i
	.type	_Z19kernel2WithAtomicOpPfS_S_i, @function
_Z19kernel2WithAtomicOpPfS_S_i:
.LFB2056:
	.cfi_startproc
	endbr64
	jmp	_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i
	.cfi_endproc
.LFE2056:
	.size	_Z19kernel2WithAtomicOpPfS_S_i, .-_Z19kernel2WithAtomicOpPfS_S_i
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC2:
	.string	"N: %d, block num: %d\n"
.LC3:
	.string	"result from Kernel1 with sum on CPU side: %f\n"
.LC4:
	.string	"kernel 1 execution time: %f milliseconds\n\n"
.LC5:
	.string	"result from Kernel2 with sum on GPU side: %f\n"
.LC6:
	.string	"kernel 2 execution time: %f milliseconds\n\n"
	.section	.text.startup,"ax",@progbits
	.globl	main
	.type	main, @function
main:
.LFB2027:
	.cfi_startproc
	endbr64
	pushq	%r14
	.cfi_def_cfa_offset 16
	.cfi_offset 14, -16
	movl	$32768, %ecx
	movl	$16777216, %edx
	leaq	.LC2(%rip), %rsi
	pushq	%r13
	.cfi_def_cfa_offset 24
	.cfi_offset 13, -24
	movl	$2, %edi
	pushq	%r12
	.cfi_def_cfa_offset 32
	.cfi_offset 12, -32
	pushq	%rbp
	.cfi_def_cfa_offset 40
	.cfi_offset 6, -40
	pushq	%rbx
	.cfi_def_cfa_offset 48
	.cfi_offset 3, -48
	subq	$96, %rsp
	.cfi_def_cfa_offset 144
	movq	%fs:40, %rax
	movq	%rax, 88(%rsp)
	xorl	%eax, %eax
	call	__printf_chk@PLT
	movl	$67108864, %edi
	call	malloc@PLT
	movl	$16777216, %esi
	movq	%rax, %rdi
	movq	%rax, %r13
	call	_Z13random_floatsPfi
	movl	$67108864, %edi
	call	malloc@PLT
	movl	$16777216, %esi
	movq	%rax, %rdi
	movq	%rax, %r12
	call	_Z13random_floatsPfi
	movl	$131072, %edi
	call	malloc@PLT
	movl	$4, %edi
	movq	%rax, %rbp
	call	malloc@PLT
	leaq	16(%rsp), %rdi
	movl	$0x00000000, (%rax)
	movq	%rax, %rbx
	call	cudaEventCreate@PLT
	leaq	24(%rsp), %rdi
	call	cudaEventCreate@PLT
	leaq	32(%rsp), %rdi
	movl	$67108864, %esi
	call	cudaMalloc@PLT
	leaq	40(%rsp), %rdi
	movl	$67108864, %esi
	call	cudaMalloc@PLT
	leaq	48(%rsp), %rdi
	movl	$131072, %esi
	call	cudaMalloc@PLT
	leaq	56(%rsp), %rdi
	movl	$4, %esi
	call	cudaMalloc@PLT
	movq	32(%rsp), %rdi
	movl	$1, %ecx
	movq	%r13, %rsi
	movl	$67108864, %edx
	call	cudaMemcpy@PLT
	movq	40(%rsp), %rdi
	movl	$1, %ecx
	movq	%r12, %rsi
	movl	$67108864, %edx
	call	cudaMemcpy@PLT
	movq	56(%rsp), %rdi
	movl	$1, %ecx
	movq	%rbx, %rsi
	movl	$4, %edx
	call	cudaMemcpy@PLT
	movq	16(%rsp), %rdi
	xorl	%esi, %esi
	call	cudaEventRecord@PLT
	movl	$8388609, %edx
	xorl	%r9d, %r9d
	xorl	%r8d, %r8d
	movl	$131073, %edi
	salq	$9, %rdx
	movl	$1, %ecx
	movl	$1, %esi
	salq	$15, %rdi
	movq	%rdx, 76(%rsp)
	movl	$1, 84(%rsp)
	movq	%rdi, 64(%rsp)
	movl	$1, 72(%rsp)
	call	__cudaPushCallConfiguration@PLT
	testl	%eax, %eax
	jne	.L19
	movq	48(%rsp), %rdx
	movq	40(%rsp), %rsi
	movl	$16777216, %ecx
	movq	32(%rsp), %rdi
	call	_Z31__device_stub__Z7kernel1PfS_S_iPfS_S_i
.L19:
	movq	24(%rsp), %rdi
	xorl	%esi, %esi
	call	cudaEventRecord@PLT
	movq	48(%rsp), %rsi
	movl	$2, %ecx
	movq	%rbp, %rdi
	movl	$131072, %edx
	call	cudaMemcpy@PLT
	xorl	%eax, %eax
	xorps	%xmm0, %xmm0
.L20:
	addss	0(%rbp,%rax,4), %xmm0
	incq	%rax
	cmpq	$32768, %rax
	jne	.L20
	movss	%xmm0, (%rbx)
	movl	$2, %edi
	movb	$1, %al
	leaq	.LC3(%rip), %rsi
	cvtss2sd	%xmm0, %xmm0
	call	__printf_chk@PLT
	movq	24(%rsp), %rdi
	leaq	12(%rsp), %r14
	call	cudaEventSynchronize@PLT
	movq	24(%rsp), %rdx
	movq	%r14, %rdi
	movq	16(%rsp), %rsi
	movl	$0x00000000, 12(%rsp)
	call	cudaEventElapsedTime@PLT
	leaq	.LC4(%rip), %rsi
	movl	$2, %edi
	movb	$1, %al
	cvtss2sd	12(%rsp), %xmm0
	call	__printf_chk@PLT
	movq	16(%rsp), %rdi
	xorl	%esi, %esi
	call	cudaEventRecord@PLT
	movl	$8388609, %edx
	xorl	%r9d, %r9d
	xorl	%r8d, %r8d
	movl	$131073, %edi
	salq	$9, %rdx
	movl	$1, %ecx
	movl	$1, %esi
	salq	$15, %rdi
	movq	%rdx, 76(%rsp)
	movl	$1, 84(%rsp)
	movq	%rdi, 64(%rsp)
	movl	$1, 72(%rsp)
	call	__cudaPushCallConfiguration@PLT
	testl	%eax, %eax
	jne	.L21
	movq	56(%rsp), %rdx
	movq	40(%rsp), %rsi
	movl	$16777216, %ecx
	movq	32(%rsp), %rdi
	call	_Z44__device_stub__Z19kernel2WithAtomicOpPfS_S_iPfS_S_i
.L21:
	movq	24(%rsp), %rdi
	xorl	%esi, %esi
	call	cudaEventRecord@PLT
	movq	56(%rsp), %rsi
	movl	$2, %ecx
	movq	%rbx, %rdi
	movl	$4, %edx
	call	cudaMemcpy@PLT
	movl	$2, %edi
	movb	$1, %al
	leaq	.LC5(%rip), %rsi
	cvtss2sd	(%rbx), %xmm0
	call	__printf_chk@PLT
	movq	24(%rsp), %rdi
	call	cudaEventSynchronize@PLT
	movq	24(%rsp), %rdx
	movq	%r14, %rdi
	movq	16(%rsp), %rsi
	movl	$0x00000000, 12(%rsp)
	call	cudaEventElapsedTime@PLT
	leaq	.LC6(%rip), %rsi
	movl	$2, %edi
	movb	$1, %al
	cvtss2sd	12(%rsp), %xmm0
	call	__printf_chk@PLT
	movq	%r13, %rdi
	call	free@PLT
	movq	%r12, %rdi
	call	free@PLT
	movq	%rbp, %rdi
	call	free@PLT
	movq	%rbx, %rdi
	call	free@PLT
	movq	32(%rsp), %rdi
	call	cudaFree@PLT
	movq	40(%rsp), %rdi
	call	cudaFree@PLT
	movq	48(%rsp), %rdi
	call	cudaFree@PLT
	movq	56(%rsp), %rdi
	call	cudaFree@PLT
	movq	16(%rsp), %rdi
	call	cudaEventDestroy@PLT
	movq	24(%rsp), %rdi
	call	cudaEventDestroy@PLT
	movq	88(%rsp), %rax
	subq	%fs:40, %rax
	je	.L22
	call	__stack_chk_fail@PLT
.L22:
	addq	$96, %rsp
	.cfi_def_cfa_offset 48
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 40
	popq	%rbp
	.cfi_def_cfa_offset 32
	popq	%r12
	.cfi_def_cfa_offset 24
	popq	%r13
	.cfi_def_cfa_offset 16
	popq	%r14
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2027:
	.size	main, .-main
	.section	.rodata.str1.1
.LC7:
	.string	"_Z19kernel2WithAtomicOpPfS_S_i"
.LC8:
	.string	"_Z7kernel1PfS_S_i"
	.section	.text.startup
	.type	_ZL24__sti____cudaRegisterAllv, @function
_ZL24__sti____cudaRegisterAllv:
.LFB2058:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	leaq	_ZL15__fatDeviceText(%rip), %rdi
	call	__cudaRegisterFatBinary@PLT
	pushq	$0
	.cfi_def_cfa_offset 24
	xorl	%r9d, %r9d
	orl	$-1, %r8d
	pushq	$0
	.cfi_def_cfa_offset 32
	leaq	.LC7(%rip), %rdx
	movq	%rax, %rdi
	movq	%rax, %rbx
	pushq	$0
	.cfi_def_cfa_offset 40
	movq	%rdx, %rcx
	leaq	_Z19kernel2WithAtomicOpPfS_S_i(%rip), %rsi
	pushq	$0
	.cfi_def_cfa_offset 48
	movq	%rax, _ZL20__cudaFatCubinHandle(%rip)
	call	__cudaRegisterFunction@PLT
	addq	$32, %rsp
	.cfi_def_cfa_offset 16
	movq	%rbx, %rdi
	xorl	%r9d, %r9d
	pushq	$0
	.cfi_def_cfa_offset 24
	leaq	.LC8(%rip), %rdx
	orl	$-1, %r8d
	leaq	_Z7kernel1PfS_S_i(%rip), %rsi
	pushq	$0
	.cfi_def_cfa_offset 32
	movq	%rdx, %rcx
	pushq	$0
	.cfi_def_cfa_offset 40
	pushq	$0
	.cfi_def_cfa_offset 48
	call	__cudaRegisterFunction@PLT
	movq	_ZL20__cudaFatCubinHandle(%rip), %rdi
	addq	$32, %rsp
	.cfi_def_cfa_offset 16
	call	__cudaRegisterFatBinaryEnd@PLT
	leaq	_ZL26__cudaUnregisterBinaryUtilv(%rip), %rdi
	popq	%rbx
	.cfi_def_cfa_offset 8
	jmp	atexit@PLT
	.cfi_endproc
.LFE2058:
	.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
	.section	.rodata.cst4,"aM",@progbits,4
	.align 4
.LC0:
	.long	805306368
	.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>
#include <stdlib.h>
#include <sys/time.h>

#define N (1<<24)
#define THREADS_PER_BLOCK 512
#define BLOCK_NUM (N + THREADS_PER_BLOCK - 1)/THREADS_PER_BLOCK // 1<<15 block 

void random_floats(float *x, int Num);
__global__ void kernel1(float *a, float *b, float *out, int n);
__global__ void kernel2WithAtomicOp(float *a, float *b, float *out, int n);

int main(void){
  printf("N: %d, block num: %d\n", N, BLOCK_NUM);
  // initialization
  float *a, *b, *reduce, *sum;
  a = (float *)malloc(N * sizeof(float));
  random_floats(a, N);
  b = (float *)malloc(N * sizeof(float));
  random_floats(b, N);
  reduce = (float *)malloc(BLOCK_NUM * sizeof(float));
  sum = (float *)malloc(sizeof(float));
  *sum = 0;
  // cudaEvent initialization
  hipEvent_t start, stop;
  hipEventCreate(&start);
  hipEventCreate(&stop);

  // create space on gpu side
  float *da, *db, *dreduce, *dsum;
  hipMalloc((void **)&da, N * sizeof(float));
  hipMalloc((void **)&db, N * sizeof(float));
  hipMalloc((void **)&dreduce, BLOCK_NUM * sizeof(float));
  hipMalloc((void **)&dsum, sizeof(float));

  // copy from cpu to gpu
  hipMemcpy(da, a, N*sizeof(float), hipMemcpyHostToDevice);
  hipMemcpy(db, b, N*sizeof(float), hipMemcpyHostToDevice);
  hipMemcpy(dsum, sum, sizeof(float), hipMemcpyHostToDevice);

  // kernel1: shared memory + parallel reduction
  hipEventRecord(start);
  kernel1<<<BLOCK_NUM, THREADS_PER_BLOCK>>>(da, db, dreduce, N);
  hipEventRecord(stop);
  //// copy back to cpu
  hipMemcpy(reduce, dreduce, BLOCK_NUM*sizeof(float), hipMemcpyDeviceToHost);
  //// add up all elements in reduce
  *sum = 0;
  for (int i = 0; i < BLOCK_NUM; i++)
    *sum += reduce[i];
  printf("result from Kernel1 with sum on CPU side: %f\n", *sum);
  hipEventSynchronize(stop);
  float milliseconds = 0;
  hipEventElapsedTime(&milliseconds, start, stop);
  printf("kernel 1 execution time: %f milliseconds\n\n", milliseconds);


  // kernel2: shared memory + parallel reduction + atomic operation
  hipEventRecord(start);
  kernel2WithAtomicOp<<<BLOCK_NUM, THREADS_PER_BLOCK>>>(da, db, dsum, N);
  hipEventRecord(stop);
  //// copy back to cpu
  hipMemcpy(sum, dsum, sizeof(float), hipMemcpyDeviceToHost);
  printf("result from Kernel2 with sum on GPU side: %f\n", *sum);
  hipEventSynchronize(stop);
  milliseconds = 0;
  hipEventElapsedTime(&milliseconds, start, stop);
  printf("kernel 2 execution time: %f milliseconds\n\n", milliseconds);

  free(a);  free(b);  free(reduce);  free(sum);
  hipFree(da);  hipFree(db);  hipFree(dreduce);  hipFree(dsum);
  hipEventDestroy(start);  hipEventDestroy(stop);
  return 0;
}

void random_floats(float *x, int Num)
{
  for (int i = 0; i < Num; i++)
  {
    x[i] = (float)rand() / RAND_MAX;
  }
}

__global__ void kernel1(float *a, float *b, float *out, int n){
  __shared__ float sdata[THREADS_PER_BLOCK];
  int tid = threadIdx.x;
  int index = threadIdx.x + blockIdx.x * blockDim.x;
  sdata[tid] = 0.0;
  if (index < n)
    sdata[tid] = a[index] * b[index];
  __syncthreads();

  for (int s = 1; s < blockDim.x; s *= 2){
    int ix = 2 * s * tid;
    if (ix < blockDim.x)
      sdata[ix] += sdata[ix+s];
    __syncthreads();
  }
  if (tid == 0) out[blockIdx.x] = sdata[0]; 
}

__global__ void kernel2WithAtomicOp(float *a, float *b, float *out, int n){
  __shared__ float sdata[THREADS_PER_BLOCK];
  int tid = threadIdx.x;
  int index = threadIdx.x + blockIdx.x * blockDim.x;
  sdata[tid] = 0.0;
  if (index < n)
    sdata[tid] = a[index] * b[index];
  __syncthreads();

  for (int s = 1; s < blockDim.x; s *= 2){
    int ix = 2 * s * tid;
    if (ix < blockDim.x)
      sdata[ix] += sdata[ix+s];
    __syncthreads();
  }
  if (tid == 0)
    atomicAdd(out, sdata[0]);
}

	.text
	.file	"assign2.hip"
	.section	.rodata.cst4,"aM",@progbits,4
	.p2align	2, 0x0                          # -- Begin function main
.LCPI0_0:
	.long	0x30000000                      # float 4.65661287E-10
	.text
	.globl	main
	.type	main,@function
main:                                   # @main
	.cfi_startproc
# %bb.0:
	pushq	%rbp
	.cfi_def_cfa_offset 16
	pushq	%r15
	.cfi_def_cfa_offset 24
	pushq	%r14
	.cfi_def_cfa_offset 32
	pushq	%r13
	.cfi_def_cfa_offset 40
	pushq	%r12
	.cfi_def_cfa_offset 48
	pushq	%rbx
	.cfi_def_cfa_offset 56
	subq	$56, %rsp
	.cfi_def_cfa_offset 112
	.cfi_offset %rbx, -56
	.cfi_offset %r12, -48
	.cfi_offset %r13, -40
	.cfi_offset %r14, -32
	.cfi_offset %r15, -24
	.cfi_offset %rbp, -16
	xorl	%r14d, %r14d
	movl	$.L.str, %edi
	movl	$16777216, %esi                 # imm = 0x1000000
	movl	$32768, %edx                    # imm = 0x8000
	xorl	%eax, %eax
	callq	printf
	movl	$67108864, %edi                 # imm = 0x4000000
	callq	malloc
	movq	%rax, %rbx
.LBB0_1:                                # %.lr.ph.i
                                        # =>This Inner Loop Header: Depth=1
	callq	rand
	xorps	%xmm0, %xmm0
	cvtsi2ss	%eax, %xmm0
	mulss	.LCPI0_0(%rip), %xmm0
	movss	%xmm0, (%rbx,%r14,4)
	incq	%r14
	cmpq	$16777216, %r14                 # imm = 0x1000000
	jne	.LBB0_1
# %bb.2:                                # %_Z13random_floatsPfi.exit
	movl	$67108864, %edi                 # imm = 0x4000000
	callq	malloc
	movq	%rax, %r14
	xorl	%r15d, %r15d
.LBB0_3:                                # %.lr.ph.i26
                                        # =>This Inner Loop Header: Depth=1
	callq	rand
	xorps	%xmm0, %xmm0
	cvtsi2ss	%eax, %xmm0
	mulss	.LCPI0_0(%rip), %xmm0
	movss	%xmm0, (%r14,%r15,4)
	incq	%r15
	cmpq	$16777216, %r15                 # imm = 0x1000000
	jne	.LBB0_3
# %bb.4:                                # %_Z13random_floatsPfi.exit30
	movl	$131072, %edi                   # imm = 0x20000
	callq	malloc
	movq	%rax, %r15
	movl	$4, %edi
	callq	malloc
	movq	%rax, %r13
	movl	$0, (%rax)
	leaq	8(%rsp), %rdi
	callq	hipEventCreate
	movq	%rsp, %rdi
	callq	hipEventCreate
	leaq	40(%rsp), %rbp
	movl	$67108864, %esi                 # imm = 0x4000000
	movq	%rbp, %rdi
	callq	hipMalloc
	leaq	16(%rsp), %rdi
	movl	$67108864, %esi                 # imm = 0x4000000
	callq	hipMalloc
	leaq	32(%rsp), %rdi
	movl	$131072, %esi                   # imm = 0x20000
	callq	hipMalloc
	leaq	24(%rsp), %r12
	movl	$4, %esi
	movq	%r12, %rdi
	callq	hipMalloc
	movq	(%rbp), %rdi
	movl	$67108864, %edx                 # imm = 0x4000000
	movq	%rbx, %rsi
	movl	$1, %ecx
	callq	hipMemcpy
	leaq	16(%rsp), %rax
	movq	(%rax), %rdi
	movl	$67108864, %edx                 # imm = 0x4000000
	movq	%r14, %rsi
	movl	$1, %ecx
	callq	hipMemcpy
	movq	(%r12), %rdi
	movl	$4, %edx
	movq	%r13, %rsi
	movl	$1, %ecx
	callq	hipMemcpy
	leaq	8(%rsp), %rax
	movq	(%rax), %rdi
	xorl	%esi, %esi
	callq	hipEventRecord
	movabsq	$4294967808, %rdx               # imm = 0x100000200
	leaq	32256(%rdx), %rbp
	movq	%rbp, %rdi
	movl	$1, %esi
	movl	$1, %ecx
	xorl	%r8d, %r8d
	xorl	%r9d, %r9d
	callq	__hipPushCallConfiguration
	testl	%eax, %eax
	jne	.LBB0_6
# %bb.5:
	movq	40(%rsp), %rdi
	movq	16(%rsp), %rsi
	movq	32(%rsp), %rdx
	movl	$16777216, %ecx                 # imm = 0x1000000
	callq	_Z22__device_stub__kernel1PfS_S_i
.LBB0_6:
	movq	(%rsp), %rdi
	xorl	%r12d, %r12d
	xorl	%esi, %esi
	callq	hipEventRecord
	movq	32(%rsp), %rsi
	movl	$131072, %edx                   # imm = 0x20000
	movq	%r15, %rdi
	movl	$2, %ecx
	callq	hipMemcpy
	xorps	%xmm0, %xmm0
.LBB0_7:                                # =>This Inner Loop Header: Depth=1
	addss	(%r15,%r12,4), %xmm0
	incq	%r12
	cmpq	$32768, %r12                    # imm = 0x8000
	jne	.LBB0_7
# %bb.8:
	movss	%xmm0, (%r13)
	cvtss2sd	%xmm0, %xmm0
	movl	$.L.str.1, %edi
	movb	$1, %al
	callq	printf
	movq	(%rsp), %rdi
	callq	hipEventSynchronize
	leaq	52(%rsp), %r12
	movl	$0, (%r12)
	movq	8(%rsp), %rsi
	movq	(%rsp), %rdx
	movq	%r12, %rdi
	callq	hipEventElapsedTime
	xorps	%xmm0, %xmm0
	cvtss2sd	(%r12), %xmm0
	movl	$.L.str.2, %edi
	movb	$1, %al
	callq	printf
	movq	8(%rsp), %rdi
	xorl	%esi, %esi
	callq	hipEventRecord
	movq	%rbp, %rdi
	movl	$1, %esi
	movabsq	$4294967808, %rdx               # imm = 0x100000200
	movl	$1, %ecx
	xorl	%r8d, %r8d
	xorl	%r9d, %r9d
	callq	__hipPushCallConfiguration
	testl	%eax, %eax
	jne	.LBB0_10
# %bb.9:
	movq	40(%rsp), %rdi
	movq	16(%rsp), %rsi
	movq	24(%rsp), %rdx
	movl	$16777216, %ecx                 # imm = 0x1000000
	callq	_Z34__device_stub__kernel2WithAtomicOpPfS_S_i
.LBB0_10:
	movq	(%rsp), %rdi
	xorl	%esi, %esi
	callq	hipEventRecord
	movq	24(%rsp), %rsi
	movl	$4, %edx
	movq	%r13, %rdi
	movl	$2, %ecx
	callq	hipMemcpy
	xorps	%xmm0, %xmm0
	cvtss2sd	(%r13), %xmm0
	movl	$.L.str.3, %edi
	movb	$1, %al
	callq	printf
	movq	(%rsp), %rdi
	callq	hipEventSynchronize
	leaq	52(%rsp), %r12
	movl	$0, (%r12)
	movq	8(%rsp), %rsi
	movq	(%rsp), %rdx
	movq	%r12, %rdi
	callq	hipEventElapsedTime
	xorps	%xmm0, %xmm0
	cvtss2sd	(%r12), %xmm0
	movl	$.L.str.4, %edi
	movb	$1, %al
	callq	printf
	movq	%rbx, %rdi
	callq	free
	movq	%r14, %rdi
	callq	free
	movq	%r15, %rdi
	callq	free
	movq	%r13, %rdi
	callq	free
	movq	40(%rsp), %rdi
	callq	hipFree
	movq	16(%rsp), %rdi
	callq	hipFree
	movq	32(%rsp), %rdi
	callq	hipFree
	movq	24(%rsp), %rdi
	callq	hipFree
	movq	8(%rsp), %rdi
	callq	hipEventDestroy
	movq	(%rsp), %rdi
	callq	hipEventDestroy
	xorl	%eax, %eax
	addq	$56, %rsp
	.cfi_def_cfa_offset 56
	popq	%rbx
	.cfi_def_cfa_offset 48
	popq	%r12
	.cfi_def_cfa_offset 40
	popq	%r13
	.cfi_def_cfa_offset 32
	popq	%r14
	.cfi_def_cfa_offset 24
	popq	%r15
	.cfi_def_cfa_offset 16
	popq	%rbp
	.cfi_def_cfa_offset 8
	retq
.Lfunc_end0:
	.size	main, .Lfunc_end0-main
	.cfi_endproc
                                        # -- End function
	.section	.rodata.cst4,"aM",@progbits,4
	.p2align	2, 0x0                          # -- Begin function _Z13random_floatsPfi
.LCPI1_0:
	.long	0x30000000                      # float 4.65661287E-10
	.text
	.globl	_Z13random_floatsPfi
	.type	_Z13random_floatsPfi,@function
_Z13random_floatsPfi:                   # @_Z13random_floatsPfi
	.cfi_startproc
# %bb.0:
	testl	%esi, %esi
	jle	.LBB1_4
# %bb.1:                                # %.lr.ph.preheader
	pushq	%r15
	.cfi_def_cfa_offset 16
	pushq	%r14
	.cfi_def_cfa_offset 24
	pushq	%rbx
	.cfi_def_cfa_offset 32
	.cfi_offset %rbx, -32
	.cfi_offset %r14, -24
	.cfi_offset %r15, -16
	movq	%rdi, %rbx
	movl	%esi, %r14d
	xorl	%r15d, %r15d
.LBB1_2:                                # %.lr.ph
                                        # =>This Inner Loop Header: Depth=1
	callq	rand
	xorps	%xmm0, %xmm0
	cvtsi2ss	%eax, %xmm0
	mulss	.LCPI1_0(%rip), %xmm0
	movss	%xmm0, (%rbx,%r15,4)
	incq	%r15
	cmpq	%r15, %r14
	jne	.LBB1_2
# %bb.3:
	popq	%rbx
	.cfi_def_cfa_offset 24
	popq	%r14
	.cfi_def_cfa_offset 16
	popq	%r15
	.cfi_def_cfa_offset 8
	.cfi_restore %rbx
	.cfi_restore %r14
	.cfi_restore %r15
.LBB1_4:                                # %._crit_edge
	retq
.Lfunc_end1:
	.size	_Z13random_floatsPfi, .Lfunc_end1-_Z13random_floatsPfi
	.cfi_endproc
                                        # -- End function
	.globl	_Z22__device_stub__kernel1PfS_S_i # -- Begin function _Z22__device_stub__kernel1PfS_S_i
	.type	_Z22__device_stub__kernel1PfS_S_i,@function
_Z22__device_stub__kernel1PfS_S_i:      # @_Z22__device_stub__kernel1PfS_S_i
	.cfi_startproc
# %bb.0:
	pushq	%r15
	.cfi_def_cfa_offset 16
	pushq	%r14
	.cfi_def_cfa_offset 24
	pushq	%r13
	.cfi_def_cfa_offset 32
	pushq	%r12
	.cfi_def_cfa_offset 40
	pushq	%rbx
	.cfi_def_cfa_offset 48
	subq	$112, %rsp
	.cfi_def_cfa_offset 160
	.cfi_offset %rbx, -48
	.cfi_offset %r12, -40
	.cfi_offset %r13, -32
	.cfi_offset %r14, -24
	.cfi_offset %r15, -16
	leaq	40(%rsp), %rax
	movq	%rdi, (%rax)
	leaq	32(%rsp), %rdi
	movq	%rsi, (%rdi)
	leaq	24(%rsp), %rsi
	movq	%rdx, (%rsi)
	leaq	4(%rsp), %rdx
	movl	%ecx, (%rdx)
	leaq	80(%rsp), %rbx
	movq	%rax, (%rbx)
	movq	%rdi, 8(%rbx)
	movq	%rsi, 16(%rbx)
	movq	%rdx, 24(%rbx)
	leaq	64(%rsp), %r14
	leaq	48(%rsp), %r15
	leaq	16(%rsp), %r12
	leaq	8(%rsp), %r13
	movq	%r14, %rdi
	movq	%r15, %rsi
	movq	%r12, %rdx
	movq	%r13, %rcx
	callq	__hipPopCallConfiguration
	movq	(%r14), %rsi
	movl	8(%r14), %edx
	movq	(%r15), %rcx
	movl	8(%r15), %r8d
	movl	$_Z7kernel1PfS_S_i, %edi
	movq	%rbx, %r9
	pushq	(%r13)
	.cfi_adjust_cfa_offset 8
	pushq	(%r12)
	.cfi_adjust_cfa_offset 8
	callq	hipLaunchKernel
	addq	$128, %rsp
	.cfi_adjust_cfa_offset -128
	popq	%rbx
	.cfi_def_cfa_offset 40
	popq	%r12
	.cfi_def_cfa_offset 32
	popq	%r13
	.cfi_def_cfa_offset 24
	popq	%r14
	.cfi_def_cfa_offset 16
	popq	%r15
	.cfi_def_cfa_offset 8
	retq
.Lfunc_end2:
	.size	_Z22__device_stub__kernel1PfS_S_i, .Lfunc_end2-_Z22__device_stub__kernel1PfS_S_i
	.cfi_endproc
                                        # -- End function
	.globl	_Z34__device_stub__kernel2WithAtomicOpPfS_S_i # -- Begin function _Z34__device_stub__kernel2WithAtomicOpPfS_S_i
	.type	_Z34__device_stub__kernel2WithAtomicOpPfS_S_i,@function
_Z34__device_stub__kernel2WithAtomicOpPfS_S_i: # @_Z34__device_stub__kernel2WithAtomicOpPfS_S_i
	.cfi_startproc
# %bb.0:
	pushq	%r15
	.cfi_def_cfa_offset 16
	pushq	%r14
	.cfi_def_cfa_offset 24
	pushq	%r13
	.cfi_def_cfa_offset 32
	pushq	%r12
	.cfi_def_cfa_offset 40
	pushq	%rbx
	.cfi_def_cfa_offset 48
	subq	$112, %rsp
	.cfi_def_cfa_offset 160
	.cfi_offset %rbx, -48
	.cfi_offset %r12, -40
	.cfi_offset %r13, -32
	.cfi_offset %r14, -24
	.cfi_offset %r15, -16
	leaq	40(%rsp), %rax
	movq	%rdi, (%rax)
	leaq	32(%rsp), %rdi
	movq	%rsi, (%rdi)
	leaq	24(%rsp), %rsi
	movq	%rdx, (%rsi)
	leaq	4(%rsp), %rdx
	movl	%ecx, (%rdx)
	leaq	80(%rsp), %rbx
	movq	%rax, (%rbx)
	movq	%rdi, 8(%rbx)
	movq	%rsi, 16(%rbx)
	movq	%rdx, 24(%rbx)
	leaq	64(%rsp), %r14
	leaq	48(%rsp), %r15
	leaq	16(%rsp), %r12
	leaq	8(%rsp), %r13
	movq	%r14, %rdi
	movq	%r15, %rsi
	movq	%r12, %rdx
	movq	%r13, %rcx
	callq	__hipPopCallConfiguration
	movq	(%r14), %rsi
	movl	8(%r14), %edx
	movq	(%r15), %rcx
	movl	8(%r15), %r8d
	movl	$_Z19kernel2WithAtomicOpPfS_S_i, %edi
	movq	%rbx, %r9
	pushq	(%r13)
	.cfi_adjust_cfa_offset 8
	pushq	(%r12)
	.cfi_adjust_cfa_offset 8
	callq	hipLaunchKernel
	addq	$128, %rsp
	.cfi_adjust_cfa_offset -128
	popq	%rbx
	.cfi_def_cfa_offset 40
	popq	%r12
	.cfi_def_cfa_offset 32
	popq	%r13
	.cfi_def_cfa_offset 24
	popq	%r14
	.cfi_def_cfa_offset 16
	popq	%r15
	.cfi_def_cfa_offset 8
	retq
.Lfunc_end3:
	.size	_Z34__device_stub__kernel2WithAtomicOpPfS_S_i, .Lfunc_end3-_Z34__device_stub__kernel2WithAtomicOpPfS_S_i
	.cfi_endproc
                                        # -- End function
	.p2align	4, 0x90                         # -- Begin function __hip_module_ctor
	.type	__hip_module_ctor,@function
__hip_module_ctor:                      # @__hip_module_ctor
	.cfi_startproc
# %bb.0:
	pushq	%rbx
	.cfi_def_cfa_offset 16
	subq	$32, %rsp
	.cfi_def_cfa_offset 48
	.cfi_offset %rbx, -16
	movq	__hip_gpubin_handle(%rip), %rbx
	testq	%rbx, %rbx
	jne	.LBB4_2
# %bb.1:
	movl	$__hip_fatbin_wrapper, %edi
	callq	__hipRegisterFatBinary
	movq	%rax, %rbx
	movq	%rax, __hip_gpubin_handle(%rip)
.LBB4_2:
	xorps	%xmm0, %xmm0
	movups	%xmm0, 16(%rsp)
	movups	%xmm0, (%rsp)
	movl	$_Z7kernel1PfS_S_i, %esi
	movl	$.L__unnamed_1, %edx
	movl	$.L__unnamed_1, %ecx
	movq	%rbx, %rdi
	movl	$-1, %r8d
	xorl	%r9d, %r9d
	callq	__hipRegisterFunction
	xorps	%xmm0, %xmm0
	movups	%xmm0, 16(%rsp)
	movups	%xmm0, (%rsp)
	movl	$_Z19kernel2WithAtomicOpPfS_S_i, %esi
	movl	$.L__unnamed_2, %edx
	movl	$.L__unnamed_2, %ecx
	movq	%rbx, %rdi
	movl	$-1, %r8d
	xorl	%r9d, %r9d
	callq	__hipRegisterFunction
	movl	$__hip_module_dtor, %edi
	addq	$32, %rsp
	.cfi_def_cfa_offset 16
	popq	%rbx
	.cfi_def_cfa_offset 8
	jmp	atexit                          # TAILCALL
.Lfunc_end4:
	.size	__hip_module_ctor, .Lfunc_end4-__hip_module_ctor
	.cfi_endproc
                                        # -- End function
	.p2align	4, 0x90                         # -- Begin function __hip_module_dtor
	.type	__hip_module_dtor,@function
__hip_module_dtor:                      # @__hip_module_dtor
	.cfi_startproc
# %bb.0:
	movq	__hip_gpubin_handle(%rip), %rdi
	testq	%rdi, %rdi
	je	.LBB5_2
# %bb.1:
	pushq	%rax
	.cfi_def_cfa_offset 16
	callq	__hipUnregisterFatBinary
	movq	$0, __hip_gpubin_handle(%rip)
	addq	$8, %rsp
	.cfi_def_cfa_offset 8
.LBB5_2:
	retq
.Lfunc_end5:
	.size	__hip_module_dtor, .Lfunc_end5-__hip_module_dtor
	.cfi_endproc
                                        # -- End function
	.type	.L.str,@object                  # @.str
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str:
	.asciz	"N: %d, block num: %d\n"
	.size	.L.str, 22

	.type	_Z7kernel1PfS_S_i,@object       # @_Z7kernel1PfS_S_i
	.section	.rodata,"a",@progbits
	.globl	_Z7kernel1PfS_S_i
	.p2align	3, 0x0
_Z7kernel1PfS_S_i:
	.quad	_Z22__device_stub__kernel1PfS_S_i
	.size	_Z7kernel1PfS_S_i, 8

	.type	.L.str.1,@object                # @.str.1
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str.1:
	.asciz	"result from Kernel1 with sum on CPU side: %f\n"
	.size	.L.str.1, 46

	.type	.L.str.2,@object                # @.str.2
.L.str.2:
	.asciz	"kernel 1 execution time: %f milliseconds\n\n"
	.size	.L.str.2, 43

	.type	_Z19kernel2WithAtomicOpPfS_S_i,@object # @_Z19kernel2WithAtomicOpPfS_S_i
	.section	.rodata,"a",@progbits
	.globl	_Z19kernel2WithAtomicOpPfS_S_i
	.p2align	3, 0x0
_Z19kernel2WithAtomicOpPfS_S_i:
	.quad	_Z34__device_stub__kernel2WithAtomicOpPfS_S_i
	.size	_Z19kernel2WithAtomicOpPfS_S_i, 8

	.type	.L.str.3,@object                # @.str.3
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str.3:
	.asciz	"result from Kernel2 with sum on GPU side: %f\n"
	.size	.L.str.3, 46

	.type	.L.str.4,@object                # @.str.4
.L.str.4:
	.asciz	"kernel 2 execution time: %f milliseconds\n\n"
	.size	.L.str.4, 43

	.type	.L__unnamed_1,@object           # @0
.L__unnamed_1:
	.asciz	"_Z7kernel1PfS_S_i"
	.size	.L__unnamed_1, 18

	.type	.L__unnamed_2,@object           # @1
.L__unnamed_2:
	.asciz	"_Z19kernel2WithAtomicOpPfS_S_i"
	.size	.L__unnamed_2, 31

	.type	__hip_fatbin_wrapper,@object    # @__hip_fatbin_wrapper
	.section	.hipFatBinSegment,"a",@progbits
	.p2align	3, 0x0
__hip_fatbin_wrapper:
	.long	1212764230                      # 0x48495046
	.long	1                               # 0x1
	.quad	__hip_fatbin
	.quad	0
	.size	__hip_fatbin_wrapper, 24

	.type	__hip_gpubin_handle,@object     # @__hip_gpubin_handle
	.local	__hip_gpubin_handle
	.comm	__hip_gpubin_handle,8,8
	.section	.init_array,"aw",@init_array
	.p2align	3, 0x0
	.quad	__hip_module_ctor
	.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 _Z22__device_stub__kernel1PfS_S_i
	.addrsig_sym _Z34__device_stub__kernel2WithAtomicOpPfS_S_i
	.addrsig_sym __hip_module_ctor
	.addrsig_sym __hip_module_dtor
	.addrsig_sym _Z7kernel1PfS_S_i
	.addrsig_sym _Z19kernel2WithAtomicOpPfS_S_i
	.addrsig_sym __hip_fatbin
	.addrsig_sym __hip_fatbin_wrapper
	.addrsig_sym __hip_cuid_

	.text
	.amdgcn_target "amdgcn-amd-amdhsa--gfx1100"
	.protected	_Z7kernel1PfS_S_i       ; -- Begin function _Z7kernel1PfS_S_i
	.globl	_Z7kernel1PfS_S_i
	.p2align	8
	.type	_Z7kernel1PfS_S_i,@function
_Z7kernel1PfS_S_i:                      ; @_Z7kernel1PfS_S_i
; %bb.0:
	s_clause 0x3
	s_load_b32 s3, s[0:1], 0x2c
	s_load_b32 s8, s[0:1], 0x18
	s_load_b128 s[4:7], s[0:1], 0x0
	s_load_b64 s[0:1], s[0:1], 0x10
	s_mov_b32 s2, s15
	v_lshlrev_b32_e32 v3, 2, v0
	s_waitcnt lgkmcnt(0)
	s_and_b32 s3, s3, 0xffff
	s_delay_alu instid0(SALU_CYCLE_1)
	v_mad_u64_u32 v[1:2], null, s2, s3, v[0:1]
	v_mov_b32_e32 v2, 0
	ds_store_b32 v3, v2
	v_cmp_gt_i32_e32 vcc_lo, s8, v1
	s_and_saveexec_b32 s8, vcc_lo
	s_cbranch_execz .LBB0_2
; %bb.1:
	v_ashrrev_i32_e32 v2, 31, v1
	s_delay_alu instid0(VALU_DEP_1) | instskip(NEXT) | instid1(VALU_DEP_1)
	v_lshlrev_b64 v[1:2], 2, v[1:2]
	v_add_co_u32 v4, vcc_lo, s4, v1
	s_delay_alu instid0(VALU_DEP_2)
	v_add_co_ci_u32_e32 v5, vcc_lo, s5, v2, vcc_lo
	v_add_co_u32 v1, vcc_lo, s6, v1
	v_add_co_ci_u32_e32 v2, vcc_lo, s7, v2, vcc_lo
	global_load_b32 v4, v[4:5], off
	global_load_b32 v1, v[1:2], off
	s_waitcnt vmcnt(0)
	v_mul_f32_e32 v1, v4, v1
	ds_store_b32 v3, v1
.LBB0_2:
	s_or_b32 exec_lo, exec_lo, s8
	s_cmp_lt_u32 s3, 2
	s_waitcnt lgkmcnt(0)
	s_barrier
	buffer_gl0_inv
	s_cbranch_scc1 .LBB0_7
; %bb.3:                                ; %.lr.ph.preheader
	s_mov_b32 s5, 1
.LBB0_4:                                ; %.lr.ph
                                        ; =>This Inner Loop Header: Depth=1
	s_delay_alu instid0(SALU_CYCLE_1) | instskip(SKIP_2) | instid1(VALU_DEP_1)
	s_lshl_b32 s4, s5, 1
	s_mov_b32 s6, exec_lo
	v_mul_lo_u32 v1, s4, v0
	v_cmpx_gt_u32_e64 s3, v1
	s_cbranch_execz .LBB0_6
; %bb.5:                                ;   in Loop: Header=BB0_4 Depth=1
	v_lshlrev_b32_e32 v1, 2, v1
	s_delay_alu instid0(VALU_DEP_1)
	v_lshl_add_u32 v2, s5, 2, v1
	ds_load_b32 v2, v2
	ds_load_b32 v3, v1
	s_waitcnt lgkmcnt(0)
	v_add_f32_e32 v2, v2, v3
	ds_store_b32 v1, v2
.LBB0_6:                                ;   in Loop: Header=BB0_4 Depth=1
	s_or_b32 exec_lo, exec_lo, s6
	s_cmp_ge_u32 s4, s3
	s_mov_b32 s5, s4
	s_waitcnt lgkmcnt(0)
	s_barrier
	buffer_gl0_inv
	s_cbranch_scc0 .LBB0_4
.LBB0_7:                                ; %._crit_edge
	s_mov_b32 s3, 0
	s_mov_b32 s4, exec_lo
	v_cmpx_eq_u32_e32 0, v0
	s_cbranch_execz .LBB0_9
; %bb.8:
	v_mov_b32_e32 v0, 0
	s_lshl_b64 s[2:3], s[2:3], 2
	s_delay_alu instid0(SALU_CYCLE_1)
	s_add_u32 s0, s0, s2
	s_addc_u32 s1, s1, s3
	ds_load_b32 v1, v0
	s_waitcnt lgkmcnt(0)
	global_store_b32 v0, v1, s[0:1]
.LBB0_9:
	s_nop 0
	s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
	s_endpgm
	.section	.rodata,"a",@progbits
	.p2align	6, 0x0
	.amdhsa_kernel _Z7kernel1PfS_S_i
		.amdhsa_group_segment_fixed_size 2048
		.amdhsa_private_segment_fixed_size 0
		.amdhsa_kernarg_size 288
		.amdhsa_user_sgpr_count 15
		.amdhsa_user_sgpr_dispatch_ptr 0
		.amdhsa_user_sgpr_queue_ptr 0
		.amdhsa_user_sgpr_kernarg_segment_ptr 1
		.amdhsa_user_sgpr_dispatch_id 0
		.amdhsa_user_sgpr_private_segment_size 0
		.amdhsa_wavefront_size32 1
		.amdhsa_uses_dynamic_stack 0
		.amdhsa_enable_private_segment 0
		.amdhsa_system_sgpr_workgroup_id_x 1
		.amdhsa_system_sgpr_workgroup_id_y 0
		.amdhsa_system_sgpr_workgroup_id_z 0
		.amdhsa_system_sgpr_workgroup_info 0
		.amdhsa_system_vgpr_workitem_id 0
		.amdhsa_next_free_vgpr 6
		.amdhsa_next_free_sgpr 16
		.amdhsa_float_round_mode_32 0
		.amdhsa_float_round_mode_16_64 0
		.amdhsa_float_denorm_mode_32 3
		.amdhsa_float_denorm_mode_16_64 3
		.amdhsa_dx10_clamp 1
		.amdhsa_ieee_mode 1
		.amdhsa_fp16_overflow 0
		.amdhsa_workgroup_processor_mode 1
		.amdhsa_memory_ordered 1
		.amdhsa_forward_progress 0
		.amdhsa_shared_vgpr_count 0
		.amdhsa_exception_fp_ieee_invalid_op 0
		.amdhsa_exception_fp_denorm_src 0
		.amdhsa_exception_fp_ieee_div_zero 0
		.amdhsa_exception_fp_ieee_overflow 0
		.amdhsa_exception_fp_ieee_underflow 0
		.amdhsa_exception_fp_ieee_inexact 0
		.amdhsa_exception_int_div_zero 0
	.end_amdhsa_kernel
	.text
.Lfunc_end0:
	.size	_Z7kernel1PfS_S_i, .Lfunc_end0-_Z7kernel1PfS_S_i
                                        ; -- End function
	.section	.AMDGPU.csdata,"",@progbits
; Kernel info:
; codeLenInByte = 380
; NumSgprs: 18
; NumVgprs: 6
; ScratchSize: 0
; MemoryBound: 0
; FloatMode: 240
; IeeeMode: 1
; LDSByteSize: 2048 bytes/workgroup (compile time only)
; SGPRBlocks: 2
; VGPRBlocks: 0
; NumSGPRsForWavesPerEU: 18
; NumVGPRsForWavesPerEU: 6
; Occupancy: 16
; WaveLimiterHint : 0
; COMPUTE_PGM_RSRC2:SCRATCH_EN: 0
; COMPUTE_PGM_RSRC2:USER_SGPR: 15
; COMPUTE_PGM_RSRC2:TRAP_HANDLER: 0
; COMPUTE_PGM_RSRC2:TGID_X_EN: 1
; COMPUTE_PGM_RSRC2:TGID_Y_EN: 0
; COMPUTE_PGM_RSRC2:TGID_Z_EN: 0
; COMPUTE_PGM_RSRC2:TIDIG_COMP_CNT: 0
	.text
	.protected	_Z19kernel2WithAtomicOpPfS_S_i ; -- Begin function _Z19kernel2WithAtomicOpPfS_S_i
	.globl	_Z19kernel2WithAtomicOpPfS_S_i
	.p2align	8
	.type	_Z19kernel2WithAtomicOpPfS_S_i,@function
_Z19kernel2WithAtomicOpPfS_S_i:         ; @_Z19kernel2WithAtomicOpPfS_S_i
; %bb.0:
	s_clause 0x3
	s_load_b32 s2, s[0:1], 0x2c
	s_load_b32 s3, s[0:1], 0x18
	s_load_b128 s[4:7], s[0:1], 0x0
	s_load_b64 s[0:1], s[0:1], 0x10
	v_lshlrev_b32_e32 v3, 2, v0
	s_waitcnt lgkmcnt(0)
	s_and_b32 s2, s2, 0xffff
	s_delay_alu instid0(SALU_CYCLE_1)
	v_mad_u64_u32 v[1:2], null, s15, s2, v[0:1]
	v_mov_b32_e32 v2, 0
	ds_store_b32 v3, v2
	v_cmp_gt_i32_e32 vcc_lo, s3, v1
	s_and_saveexec_b32 s3, vcc_lo
	s_cbranch_execz .LBB1_2
; %bb.1:
	v_ashrrev_i32_e32 v2, 31, v1
	s_delay_alu instid0(VALU_DEP_1) | instskip(NEXT) | instid1(VALU_DEP_1)
	v_lshlrev_b64 v[1:2], 2, v[1:2]
	v_add_co_u32 v4, vcc_lo, s4, v1
	s_delay_alu instid0(VALU_DEP_2)
	v_add_co_ci_u32_e32 v5, vcc_lo, s5, v2, vcc_lo
	v_add_co_u32 v1, vcc_lo, s6, v1
	v_add_co_ci_u32_e32 v2, vcc_lo, s7, v2, vcc_lo
	global_load_b32 v4, v[4:5], off
	global_load_b32 v1, v[1:2], off
	s_waitcnt vmcnt(0)
	v_mul_f32_e32 v1, v4, v1
	ds_store_b32 v3, v1
.LBB1_2:
	s_or_b32 exec_lo, exec_lo, s3
	s_cmp_lt_u32 s2, 2
	s_waitcnt lgkmcnt(0)
	s_barrier
	buffer_gl0_inv
	s_cbranch_scc1 .LBB1_7
; %bb.3:                                ; %.lr.ph.preheader
	s_mov_b32 s4, 1
.LBB1_4:                                ; %.lr.ph
                                        ; =>This Inner Loop Header: Depth=1
	s_delay_alu instid0(SALU_CYCLE_1) | instskip(SKIP_2) | instid1(VALU_DEP_1)
	s_lshl_b32 s3, s4, 1
	s_mov_b32 s5, exec_lo
	v_mul_lo_u32 v1, s3, v0
	v_cmpx_gt_u32_e64 s2, v1
	s_cbranch_execz .LBB1_6
; %bb.5:                                ;   in Loop: Header=BB1_4 Depth=1
	v_lshlrev_b32_e32 v1, 2, v1
	s_delay_alu instid0(VALU_DEP_1)
	v_lshl_add_u32 v2, s4, 2, v1
	ds_load_b32 v2, v2
	ds_load_b32 v3, v1
	s_waitcnt lgkmcnt(0)
	v_add_f32_e32 v2, v2, v3
	ds_store_b32 v1, v2
.LBB1_6:                                ;   in Loop: Header=BB1_4 Depth=1
	s_or_b32 exec_lo, exec_lo, s5
	s_cmp_ge_u32 s3, s2
	s_mov_b32 s4, s3
	s_waitcnt lgkmcnt(0)
	s_barrier
	buffer_gl0_inv
	s_cbranch_scc0 .LBB1_4
.LBB1_7:                                ; %._crit_edge
	s_mov_b32 s2, exec_lo
	v_cmpx_eq_u32_e32 0, v0
	s_cbranch_execz .LBB1_11
; %bb.8:
	s_mov_b32 s2, exec_lo
	s_delay_alu instid0(SALU_CYCLE_1) | instskip(NEXT) | instid1(VALU_DEP_1)
	v_mbcnt_lo_u32_b32 v0, s2, 0
	v_cmp_eq_u32_e32 vcc_lo, 0, v0
	s_and_b32 s3, exec_lo, vcc_lo
	s_delay_alu instid0(SALU_CYCLE_1)
	s_mov_b32 exec_lo, s3
	s_cbranch_execz .LBB1_11
; %bb.9:
	s_bcnt1_i32_b32 s2, s2
	s_load_b32 s3, s[0:1], 0x0
	v_cvt_f32_ubyte0_e32 v1, s2
	v_mov_b32_e32 v2, 0
	s_mov_b32 s2, 0
	ds_load_b32 v0, v2
	s_waitcnt lgkmcnt(0)
	v_mul_f32_e32 v3, v0, v1
	v_mov_b32_e32 v1, s3
.LBB1_10:                               ; %atomicrmw.start
                                        ; =>This Inner Loop Header: Depth=1
	s_delay_alu instid0(VALU_DEP_1)
	v_add_f32_e32 v0, v1, v3
	global_atomic_cmpswap_b32 v0, v2, v[0:1], s[0:1] glc
	s_waitcnt vmcnt(0)
	v_cmp_eq_u32_e32 vcc_lo, v0, v1
	v_mov_b32_e32 v1, v0
	s_or_b32 s2, vcc_lo, s2
	s_delay_alu instid0(SALU_CYCLE_1)
	s_and_not1_b32 exec_lo, exec_lo, s2
	s_cbranch_execnz .LBB1_10
.LBB1_11:
	s_endpgm
	.section	.rodata,"a",@progbits
	.p2align	6, 0x0
	.amdhsa_kernel _Z19kernel2WithAtomicOpPfS_S_i
		.amdhsa_group_segment_fixed_size 2048
		.amdhsa_private_segment_fixed_size 0
		.amdhsa_kernarg_size 288
		.amdhsa_user_sgpr_count 15
		.amdhsa_user_sgpr_dispatch_ptr 0
		.amdhsa_user_sgpr_queue_ptr 0
		.amdhsa_user_sgpr_kernarg_segment_ptr 1
		.amdhsa_user_sgpr_dispatch_id 0
		.amdhsa_user_sgpr_private_segment_size 0
		.amdhsa_wavefront_size32 1
		.amdhsa_uses_dynamic_stack 0
		.amdhsa_enable_private_segment 0
		.amdhsa_system_sgpr_workgroup_id_x 1
		.amdhsa_system_sgpr_workgroup_id_y 0
		.amdhsa_system_sgpr_workgroup_id_z 0
		.amdhsa_system_sgpr_workgroup_info 0
		.amdhsa_system_vgpr_workitem_id 0
		.amdhsa_next_free_vgpr 6
		.amdhsa_next_free_sgpr 16
		.amdhsa_float_round_mode_32 0
		.amdhsa_float_round_mode_16_64 0
		.amdhsa_float_denorm_mode_32 3
		.amdhsa_float_denorm_mode_16_64 3
		.amdhsa_dx10_clamp 1
		.amdhsa_ieee_mode 1
		.amdhsa_fp16_overflow 0
		.amdhsa_workgroup_processor_mode 1
		.amdhsa_memory_ordered 1
		.amdhsa_forward_progress 0
		.amdhsa_shared_vgpr_count 0
		.amdhsa_exception_fp_ieee_invalid_op 0
		.amdhsa_exception_fp_denorm_src 0
		.amdhsa_exception_fp_ieee_div_zero 0
		.amdhsa_exception_fp_ieee_overflow 0
		.amdhsa_exception_fp_ieee_underflow 0
		.amdhsa_exception_fp_ieee_inexact 0
		.amdhsa_exception_int_div_zero 0
	.end_amdhsa_kernel
	.text
.Lfunc_end1:
	.size	_Z19kernel2WithAtomicOpPfS_S_i, .Lfunc_end1-_Z19kernel2WithAtomicOpPfS_S_i
                                        ; -- End function
	.section	.AMDGPU.csdata,"",@progbits
; Kernel info:
; codeLenInByte = 448
; NumSgprs: 18
; NumVgprs: 6
; ScratchSize: 0
; MemoryBound: 0
; FloatMode: 240
; IeeeMode: 1
; LDSByteSize: 2048 bytes/workgroup (compile time only)
; SGPRBlocks: 2
; VGPRBlocks: 0
; NumSGPRsForWavesPerEU: 18
; NumVGPRsForWavesPerEU: 6
; Occupancy: 16
; WaveLimiterHint : 0
; COMPUTE_PGM_RSRC2:SCRATCH_EN: 0
; COMPUTE_PGM_RSRC2:USER_SGPR: 15
; COMPUTE_PGM_RSRC2:TRAP_HANDLER: 0
; COMPUTE_PGM_RSRC2:TGID_X_EN: 1
; COMPUTE_PGM_RSRC2:TGID_Y_EN: 0
; COMPUTE_PGM_RSRC2:TGID_Z_EN: 0
; COMPUTE_PGM_RSRC2:TIDIG_COMP_CNT: 0
	.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_
	.amdgpu_metadata
---
amdhsa.kernels:
  - .args:
      - .address_space:  global
        .offset:         0
        .size:           8
        .value_kind:     global_buffer
      - .address_space:  global
        .offset:         8
        .size:           8
        .value_kind:     global_buffer
      - .address_space:  global
        .offset:         16
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        .value_kind:     by_value
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    .kernarg_segment_align: 8
    .kernarg_segment_size: 288
    .language:       OpenCL C
    .language_version:
      - 2
      - 0
    .max_flat_workgroup_size: 1024
    .name:           _Z7kernel1PfS_S_i
    .private_segment_fixed_size: 0
    .sgpr_count:     18
    .sgpr_spill_count: 0
    .symbol:         _Z7kernel1PfS_S_i.kd
    .uniform_work_group_size: 1
    .uses_dynamic_stack: false
    .vgpr_count:     6
    .vgpr_spill_count: 0
    .wavefront_size: 32
    .workgroup_processor_mode: 1
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        .offset:         0
        .size:           8
        .value_kind:     global_buffer
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    .language:       OpenCL C
    .language_version:
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      - 0
    .max_flat_workgroup_size: 1024
    .name:           _Z19kernel2WithAtomicOpPfS_S_i
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    .sgpr_spill_count: 0
    .symbol:         _Z19kernel2WithAtomicOpPfS_S_i.kd
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    .vgpr_spill_count: 0
    .wavefront_size: 32
    .workgroup_processor_mode: 1
amdhsa.target:   amdgcn-amd-amdhsa--gfx1100
amdhsa.version:
  - 1
  - 2
...

	.end_amdgpu_metadata
