/* 
 * purpose:      testing/verifying CUDA Unified Memory for >=pascal 
 *               architectures; 
 *               n.b. the only question here is whether we are able to 
 *                    let the GPU work on data arrays much larger than what
 *                    is available on-board of the device, say with the 
 *                    8GB onboard memory of the gtx1080 master an array
 *                    of size 16GB allocated as cudaMallocManaged() on
 *                    the host
 *               n.b.2. the other real/unusual question is what could be a
 *                      reasonable one-dim array consuming 16GB ? and what
 *                      would be a tractable correctness test corresponding
 *                      to it ?
 *               result: yes, working great !
 *                       running 'watch nvidia-smi' in a 2nd terminal,
 *                       we really see the 8111MiB resident for a long time
 *                       even for times when the kernel is already back and 
 *                       we just wait for function check_array() to complete !
 * compilation:  nvcc ./unified_memory_oversubscription.cu
 * usage:        ./a.out
 */



#include <stdio.h>
#define DBLEARRAY16GB 2147483648




/* 
 * GPU kernel: working on managed unified memory
 * of really huge size, say 16GB, which is twice the
 * amount physically available on the device
 * n.b. threadIdx.x is of type unsigned int !
 *      so we should have access to 2^32 = 4294967296 
 *      different elements in terms of indices, hence
 *      sufficient to service the 2147483648 needed 
 *      within our huge-sized array but only if we 
 *      drop the sign !
 */
__global__ void KrnlDmmy(double *a)
{
    unsigned int i;

    i = (blockIdx.x * blockDim.x) + threadIdx.x;
    a[i] = (double) i + 5.0e00;

    return;
}






/* 
 * host: array check
 * this is actually all but trivial in terms of achievable/required 
 * numerical accuracy ! theoretically for our regular array, a[0]=5, a[1]=6, 
 * a[2]=7 ... a[2147483647]=2147483652 with the requested number of 
 * DBLEARRAY16GB elements, we expect a total sum of 
 * (5+2147483652)*2147483648/2=2305843018877370368
 * which turns out to be really hard to compute :-)
 */
long double check_array(double *a)
{
    unsigned int i;
    long double rslt, prvs_rslt, dlta;

   /* 
    * receives the array a[] after it had been modified on the GPU 
    * and so we just want to run a sum over all its elements to 
    * check whether the GPU kernel had been working correctly; 
    */
    rslt = 0.0e00;
    for (i=0; i<DBLEARRAY16GB; i++) {
       prvs_rslt = rslt;
       rslt += a[i];
       dlta = rslt - prvs_rslt;
       if (dlta > (i + 5)) {
          printf("element %ld, of value %lf causes dlta %lf\n", i, a[i], dlta);
       }
    }

    return(rslt);
}





/* 
 * host: main  
 */
int main()
{
    long int huge;
    dim3 thrds_per_block, blcks_per_grid;
    double *c;
    long double sgnl;


   /* 
    * at first we want to call a simple kernel that writes something into
    * CUDA unified memory (to be host-allocated next); the specific 
    * challenge here is to figure out whether a 16GB array may still 
    * fit into the device despite its physical size being limited to 8GB !
    */
    huge = (long int) DBLEARRAY16GB * sizeof(double);
    printf("huge in Bytes: %ld sizeof(double): %d\n", huge, sizeof(double));
    c = NULL;
    cudaMallocManaged(&c, huge);
    thrds_per_block.x = 512;
    blcks_per_grid.x = ((long int) DBLEARRAY16GB) / thrds_per_block.x;
    printf("working with blcks_per_grid.x: %d\n", blcks_per_grid.x);
    KrnlDmmy<<<blcks_per_grid, thrds_per_block>>>(c);
    cudaDeviceSynchronize(); 
    printf("back from GPU kernel\n");

   /* 
    * if everything has gone well we should end up with 2305843018877370368
    * when adding together all content of all individual array elements, c[]
    */
    printf("c[0] %lf\n", c[0]);
    printf("c[9] %lf\n", c[9]);
    printf("c[99] %lf\n", c[99]);
    printf("c[999] %lf\n", c[999]);
    printf("c[9999] %lf\n", c[9999]);
    printf("c[99999] %lf\n", c[99999]);
    printf("c[999999] %lf\n", c[999999]);
    printf("c[9999999] %lf\n", c[9999999]);
    printf("c[99999999] %lf\n", c[99999999]);
    printf("c[999999999] %lf\n", c[999999999]);
    printf("c[2147483647] %lf\n", c[2147483647]);
    printf("c[DBLEARRAY16GB] %lf\n", c[DBLEARRAY16GB-1]);
    sgnl = check_array(c);
    printf("expecting 2305843018877370368 while receiving %llf\n", sgnl);


    cudaFree(c);

    return(0);
}

	.file	"tmpxft_003977af_00000000-6_unified_memory_oversubscription.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
	.section	.rodata.str1.1,"aMS",@progbits,1
.LC1:
	.string	"element %ld, of value %lf causes dlta %lf\n"
	.text
	.globl	_Z11check_arrayPd
	.type	_Z11check_arrayPd, @function
_Z11check_arrayPd:
.LFB2027:
	.cfi_startproc
	endbr64
	pushq	%r12
	.cfi_def_cfa_offset 16
	.cfi_offset 12, -16
	fldz
	leaq	.LC1(%rip), %r12
	pushq	%rbp
	.cfi_def_cfa_offset 24
	.cfi_offset 6, -24
	movq	%rdi, %rbp
	pushq	%rbx
	.cfi_def_cfa_offset 32
	.cfi_offset 3, -32
	xorl	%ebx, %ebx
	subq	$16, %rsp
	.cfi_def_cfa_offset 48
.L5:
	movsd	0(%rbp,%rbx,8), %xmm0
	fld	%st(0)
	leal	5(%rbx), %eax
	movl	%ebx, %edx
	movsd	%xmm0, (%rsp)
	faddl	(%rsp)
	movq	%rax, (%rsp)
	fsub	%st, %st(1)
	fildq	(%rsp)
	fxch	%st(2)
	fcomi	%st(2), %st
	fstp	%st(2)
	jbe	.L10
	fstpt	(%rsp)
	movq	%r12, %rsi
	movl	$2, %edi
	movb	$1, %al
	pushq	%rcx
	.cfi_def_cfa_offset 56
	pushq	%rcx
	.cfi_def_cfa_offset 64
	fstpt	(%rsp)
	call	__printf_chk@PLT
	popq	%rsi
	.cfi_def_cfa_offset 56
	popq	%rdi
	.cfi_def_cfa_offset 48
	fldt	(%rsp)
	jmp	.L3
.L10:
	fstp	%st(1)
.L3:
	incq	%rbx
	movl	$2147483648, %eax
	cmpq	%rax, %rbx
	jne	.L5
	addq	$16, %rsp
	.cfi_def_cfa_offset 32
	popq	%rbx
	.cfi_def_cfa_offset 24
	popq	%rbp
	.cfi_def_cfa_offset 16
	popq	%r12
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2027:
	.size	_Z11check_arrayPd, .-_Z11check_arrayPd
	.globl	_Z27__device_stub__Z8KrnlDmmyPdPd
	.type	_Z27__device_stub__Z8KrnlDmmyPdPd, @function
_Z27__device_stub__Z8KrnlDmmyPdPd:
.LFB2053:
	.cfi_startproc
	endbr64
	subq	$104, %rsp
	.cfi_def_cfa_offset 112
	movq	%rdi, 8(%rsp)
	leaq	24(%rsp), %rcx
	leaq	16(%rsp), %rdx
	leaq	44(%rsp), %rsi
	leaq	32(%rsp), %rdi
	movq	%fs:40, %rax
	movq	%rax, 88(%rsp)
	xorl	%eax, %eax
	leaq	8(%rsp), %rax
	movl	$1, 40(%rsp)
	movq	%rax, 80(%rsp)
	movabsq	$4294967297, %rax
	movq	%rax, 32(%rsp)
	movq	%rax, 44(%rsp)
	movl	$1, 52(%rsp)
	call	__cudaPopCallConfiguration@PLT
	testl	%eax, %eax
	jne	.L11
	pushq	24(%rsp)
	.cfi_def_cfa_offset 120
	leaq	_Z8KrnlDmmyPd(%rip), %rdi
	pushq	24(%rsp)
	.cfi_def_cfa_offset 128
	movq	60(%rsp), %rcx
	movl	68(%rsp), %r8d
	movq	48(%rsp), %rsi
	movl	56(%rsp), %edx
	leaq	96(%rsp), %r9
	call	cudaLaunchKernel@PLT
	popq	%rax
	.cfi_def_cfa_offset 120
	popq	%rdx
	.cfi_def_cfa_offset 112
.L11:
	movq	88(%rsp), %rax
	subq	%fs:40, %rax
	je	.L13
	call	__stack_chk_fail@PLT
.L13:
	addq	$104, %rsp
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2053:
	.size	_Z27__device_stub__Z8KrnlDmmyPdPd, .-_Z27__device_stub__Z8KrnlDmmyPdPd
	.globl	_Z8KrnlDmmyPd
	.type	_Z8KrnlDmmyPd, @function
_Z8KrnlDmmyPd:
.LFB2054:
	.cfi_startproc
	endbr64
	jmp	_Z27__device_stub__Z8KrnlDmmyPdPd
	.cfi_endproc
.LFE2054:
	.size	_Z8KrnlDmmyPd, .-_Z8KrnlDmmyPd
	.section	.rodata.str1.1
.LC3:
	.string	"huge in Bytes: %ld sizeof(double): %d\n"
.LC4:
	.string	"working with blcks_per_grid.x: %d\n"
.LC5:
	.string	"back from GPU kernel\n"
.LC6:
	.string	"c[0] %lf\n"
.LC7:
	.string	"c[9] %lf\n"
.LC8:
	.string	"c[99] %lf\n"
.LC9:
	.string	"c[999] %lf\n"
.LC10:
	.string	"c[9999] %lf\n"
.LC11:
	.string	"c[99999] %lf\n"
.LC12:
	.string	"c[999999] %lf\n"
.LC13:
	.string	"c[9999999] %lf\n"
.LC14:
	.string	"c[99999999] %lf\n"
.LC15:
	.string	"c[999999999] %lf\n"
.LC16:
	.string	"c[2147483647] %lf\n"
.LC17:
	.string	"c[DBLEARRAY16GB] %lf\n"
.LC18:
	.string	"expecting 2305843018877370368 while receiving %llf\n"
	.section	.text.startup,"ax",@progbits
	.globl	main
	.type	main, @function
main:
.LFB2028:
	.cfi_startproc
	endbr64
	pushq	%rbx
	.cfi_def_cfa_offset 16
	.cfi_offset 3, -16
	movl	$1, %ebx
	movl	$8, %ecx
	leaq	.LC3(%rip), %rsi
	salq	$34, %rbx
	movl	$2, %edi
	movq	%rbx, %rdx
	subq	$48, %rsp
	.cfi_def_cfa_offset 64
	movq	%fs:40, %rax
	movq	%rax, 40(%rsp)
	xorl	%eax, %eax
	call	__printf_chk@PLT
	xorl	%r8d, %r8d
	leaq	8(%rsp), %rdi
	movq	%rbx, %rsi
	movl	$1, %edx
	movq	%r8, 8(%rsp)
	call	cudaMallocManaged@PLT
	movl	$4194304, %edx
	leaq	.LC4(%rip), %rsi
	xorl	%eax, %eax
	movl	$2, %edi
	call	__printf_chk@PLT
	movl	$1025, %edi
	xorl	%r9d, %r9d
	xorl	%r8d, %r8d
	movl	$8388609, %edx
	salq	$22, %rdi
	movl	$1, %ecx
	movl	$1, %esi
	salq	$9, %rdx
	movq	%rdi, 28(%rsp)
	movl	$1, 36(%rsp)
	movq	%rdx, 16(%rsp)
	movl	$1, 24(%rsp)
	call	__cudaPushCallConfiguration@PLT
	testl	%eax, %eax
	jne	.L17
	movq	8(%rsp), %rdi
	call	_Z27__device_stub__Z8KrnlDmmyPdPd
.L17:
	call	cudaDeviceSynchronize@PLT
	leaq	.LC5(%rip), %rsi
	movl	$2, %edi
	xorl	%eax, %eax
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC6(%rip), %rsi
	movl	$2147483647, %ebx
	movsd	(%rax), %xmm0
	movb	$1, %al
	salq	$3, %rbx
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC7(%rip), %rsi
	movsd	72(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC8(%rip), %rsi
	movsd	792(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC9(%rip), %rsi
	movsd	7992(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC10(%rip), %rsi
	movsd	79992(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC11(%rip), %rsi
	movsd	799992(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC12(%rip), %rsi
	movsd	7999992(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC13(%rip), %rsi
	movsd	79999992(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC14(%rip), %rsi
	movsd	799999992(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rdx
	movl	$999999999, %eax
	leaq	.LC15(%rip), %rsi
	movl	$2, %edi
	leaq	(%rdx,%rax,8), %rax
	movsd	(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	movq	8(%rsp), %rax
	movl	$2, %edi
	leaq	.LC16(%rip), %rsi
	addq	%rbx, %rax
	movsd	(%rax), %xmm0
	movb	$1, %al
	call	__printf_chk@PLT
	addq	8(%rsp), %rbx
	leaq	.LC17(%rip), %rsi
	movb	$1, %al
	movsd	(%rbx), %xmm0
	movl	$2, %edi
	call	__printf_chk@PLT
	movq	8(%rsp), %rdi
	call	_Z11check_arrayPd
	leaq	.LC18(%rip), %rsi
	movl	$2, %edi
	xorl	%eax, %eax
	pushq	%rcx
	.cfi_def_cfa_offset 72
	pushq	%rcx
	.cfi_def_cfa_offset 80
	fstpt	(%rsp)
	call	__printf_chk@PLT
	popq	%rsi
	.cfi_def_cfa_offset 72
	popq	%rdi
	.cfi_def_cfa_offset 64
	movq	8(%rsp), %rdi
	call	cudaFree@PLT
	movq	40(%rsp), %rax
	subq	%fs:40, %rax
	je	.L18
	call	__stack_chk_fail@PLT
.L18:
	addq	$48, %rsp
	.cfi_def_cfa_offset 16
	xorl	%eax, %eax
	popq	%rbx
	.cfi_def_cfa_offset 8
	ret
	.cfi_endproc
.LFE2028:
	.size	main, .-main
	.section	.rodata.str1.1
.LC19:
	.string	"_Z8KrnlDmmyPd"
	.section	.text.startup
	.type	_ZL24__sti____cudaRegisterAllv, @function
_ZL24__sti____cudaRegisterAllv:
.LFB2056:
	.cfi_startproc
	endbr64
	pushq	%rax
	.cfi_def_cfa_offset 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	.LC19(%rip), %rdx
	movq	%rax, %rdi
	leaq	_Z8KrnlDmmyPd(%rip), %rsi
	pushq	$0
	.cfi_def_cfa_offset 40
	movq	%rdx, %rcx
	pushq	$0
	.cfi_def_cfa_offset 48
	movq	%rax, _ZL20__cudaFatCubinHandle(%rip)
	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	%rdx
	.cfi_def_cfa_offset 8
	jmp	atexit@PLT
	.cfi_endproc
.LFE2056:
	.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:

/* 
 * purpose:      testing/verifying CUDA Unified Memory for >=pascal 
 *               architectures; 
 *               n.b. the only question here is whether we are able to 
 *                    let the GPU work on data arrays much larger than what
 *                    is available on-board of the device, say with the 
 *                    8GB onboard memory of the gtx1080 master an array
 *                    of size 16GB allocated as cudaMallocManaged() on
 *                    the host
 *               n.b.2. the other real/unusual question is what could be a
 *                      reasonable one-dim array consuming 16GB ? and what
 *                      would be a tractable correctness test corresponding
 *                      to it ?
 *               result: yes, working great !
 *                       running 'watch nvidia-smi' in a 2nd terminal,
 *                       we really see the 8111MiB resident for a long time
 *                       even for times when the kernel is already back and 
 *                       we just wait for function check_array() to complete !
 * compilation:  nvcc ./unified_memory_oversubscription.cu
 * usage:        ./a.out
 */




#include <hip/hip_runtime.h>
#include <stdio.h>
#define DBLEARRAY16GB 2147483648




/* 
 * GPU kernel: working on managed unified memory
 * of really huge size, say 16GB, which is twice the
 * amount physically available on the device
 * n.b. threadIdx.x is of type unsigned int !
 *      so we should have access to 2^32 = 4294967296 
 *      different elements in terms of indices, hence
 *      sufficient to service the 2147483648 needed 
 *      within our huge-sized array but only if we 
 *      drop the sign !
 */
__global__ void KrnlDmmy(double *a)
{
    unsigned int i;

    i = (blockIdx.x * blockDim.x) + threadIdx.x;
    a[i] = (double) i + 5.0e00;

    return;
}






/* 
 * host: array check
 * this is actually all but trivial in terms of achievable/required 
 * numerical accuracy ! theoretically for our regular array, a[0]=5, a[1]=6, 
 * a[2]=7 ... a[2147483647]=2147483652 with the requested number of 
 * DBLEARRAY16GB elements, we expect a total sum of 
 * (5+2147483652)*2147483648/2=2305843018877370368
 * which turns out to be really hard to compute :-)
 */
long double check_array(double *a)
{
    unsigned int i;
    long double rslt, prvs_rslt, dlta;

   /* 
    * receives the array a[] after it had been modified on the GPU 
    * and so we just want to run a sum over all its elements to 
    * check whether the GPU kernel had been working correctly; 
    */
    rslt = 0.0e00;
    for (i=0; i<DBLEARRAY16GB; i++) {
       prvs_rslt = rslt;
       rslt += a[i];
       dlta = rslt - prvs_rslt;
       if (dlta > (i + 5)) {
          printf("element %ld, of value %lf causes dlta %lf\n", i, a[i], dlta);
       }
    }

    return(rslt);
}





/* 
 * host: main  
 */
int main()
{
    long int huge;
    dim3 thrds_per_block, blcks_per_grid;
    double *c;
    long double sgnl;


   /* 
    * at first we want to call a simple kernel that writes something into
    * CUDA unified memory (to be host-allocated next); the specific 
    * challenge here is to figure out whether a 16GB array may still 
    * fit into the device despite its physical size being limited to 8GB !
    */
    huge = (long int) DBLEARRAY16GB * sizeof(double);
    printf("huge in Bytes: %ld sizeof(double): %d\n", huge, sizeof(double));
    c = NULL;
    hipMallocManaged(&c, huge);
    thrds_per_block.x = 512;
    blcks_per_grid.x = ((long int) DBLEARRAY16GB) / thrds_per_block.x;
    printf("working with blcks_per_grid.x: %d\n", blcks_per_grid.x);
    KrnlDmmy<<<blcks_per_grid, thrds_per_block>>>(c);
    hipDeviceSynchronize(); 
    printf("back from GPU kernel\n");

   /* 
    * if everything has gone well we should end up with 2305843018877370368
    * when adding together all content of all individual array elements, c[]
    */
    printf("c[0] %lf\n", c[0]);
    printf("c[9] %lf\n", c[9]);
    printf("c[99] %lf\n", c[99]);
    printf("c[999] %lf\n", c[999]);
    printf("c[9999] %lf\n", c[9999]);
    printf("c[99999] %lf\n", c[99999]);
    printf("c[999999] %lf\n", c[999999]);
    printf("c[9999999] %lf\n", c[9999999]);
    printf("c[99999999] %lf\n", c[99999999]);
    printf("c[999999999] %lf\n", c[999999999]);
    printf("c[2147483647] %lf\n", c[2147483647]);
    printf("c[DBLEARRAY16GB] %lf\n", c[DBLEARRAY16GB-1]);
    sgnl = check_array(c);
    printf("expecting 2305843018877370368 while receiving %llf\n", sgnl);


    hipFree(c);

    return(0);
}

	.text
	.file	"unified_memory_oversubscription.hip"
	.globl	_Z23__device_stub__KrnlDmmyPd   # -- Begin function _Z23__device_stub__KrnlDmmyPd
	.type	_Z23__device_stub__KrnlDmmyPd,@function
_Z23__device_stub__KrnlDmmyPd:          # @_Z23__device_stub__KrnlDmmyPd
	.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	$64, %rsp
	.cfi_def_cfa_offset 112
	.cfi_offset %rbx, -48
	.cfi_offset %r12, -40
	.cfi_offset %r13, -32
	.cfi_offset %r14, -24
	.cfi_offset %r15, -16
	leaq	24(%rsp), %rax
	movq	%rdi, (%rax)
	movq	%rsp, %rbx
	movq	%rax, (%rbx)
	leaq	48(%rsp), %r14
	leaq	32(%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	$_Z8KrnlDmmyPd, %edi
	movq	%rbx, %r9
	pushq	(%r13)
	.cfi_adjust_cfa_offset 8
	pushq	(%r12)
	.cfi_adjust_cfa_offset 8
	callq	hipLaunchKernel
	addq	$80, %rsp
	.cfi_adjust_cfa_offset -80
	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_end0:
	.size	_Z23__device_stub__KrnlDmmyPd, .Lfunc_end0-_Z23__device_stub__KrnlDmmyPd
	.cfi_endproc
                                        # -- End function
	.globl	_Z11check_arrayPd               # -- Begin function _Z11check_arrayPd
	.type	_Z11check_arrayPd,@function
_Z11check_arrayPd:                      # @_Z11check_arrayPd
	.cfi_startproc
# %bb.0:
	pushq	%r15
	.cfi_def_cfa_offset 16
	pushq	%r14
	.cfi_def_cfa_offset 24
	pushq	%rbx
	.cfi_def_cfa_offset 32
	subq	$48, %rsp
	.cfi_def_cfa_offset 80
	.cfi_offset %rbx, -32
	.cfi_offset %r14, -24
	.cfi_offset %r15, -16
	movq	%rdi, %rbx
	fldz
	xorl	%r14d, %r14d
	movl	$2147483648, %r15d              # imm = 0x80000000
.LBB1_1:                                # =>This Inner Loop Header: Depth=1
	fld	%st(0)
	movsd	(%rbx,%r14,8), %xmm0            # xmm0 = mem[0],zero
	movsd	%xmm0, 16(%rsp)
	fxch	%st(1)
	faddl	16(%rsp)
	fsub	%st, %st(1)
	leal	5(%r14), %eax
	movq	%rax, 24(%rsp)
	fildll	24(%rsp)
	fxch	%st(2)
	fucomi	%st(2), %st
	fstp	%st(2)
	jbe	.LBB1_3
# %bb.2:                                #   in Loop: Header=BB1_1 Depth=1
	fxch	%st(1)
	fstpt	(%rsp)
	movl	$.L.str, %edi
	movl	%r14d, %esi
	movb	$1, %al
	fstpt	36(%rsp)                        # 10-byte Folded Spill
	callq	printf
	fldt	36(%rsp)                        # 10-byte Folded Reload
	fldz
	fxch	%st(1)
.LBB1_3:                                #   in Loop: Header=BB1_1 Depth=1
	fstp	%st(1)
	incq	%r14
	cmpq	%r15, %r14
	jne	.LBB1_1
# %bb.4:
	addq	$48, %rsp
	.cfi_def_cfa_offset 32
	popq	%rbx
	.cfi_def_cfa_offset 24
	popq	%r14
	.cfi_def_cfa_offset 16
	popq	%r15
	.cfi_def_cfa_offset 8
	retq
.Lfunc_end1:
	.size	_Z11check_arrayPd, .Lfunc_end1-_Z11check_arrayPd
	.cfi_endproc
                                        # -- End function
	.globl	main                            # -- Begin function main
	.type	main,@function
main:                                   # @main
	.cfi_startproc
# %bb.0:
	pushq	%rbx
	.cfi_def_cfa_offset 16
	subq	$32, %rsp
	.cfi_def_cfa_offset 48
	.cfi_offset %rbx, -16
	movabsq	$17179869184, %rbx              # imm = 0x400000000
	movl	$.L.str.1, %edi
	movl	$8, %edx
	movq	%rbx, %rsi
	xorl	%eax, %eax
	callq	printf
	leaq	24(%rsp), %rdi
	movq	$0, (%rdi)
	movq	%rbx, %rsi
	movl	$1, %edx
	callq	hipMallocManaged
	movl	$.L.str.2, %edi
	movl	$4194304, %esi                  # imm = 0x400000
	xorl	%eax, %eax
	callq	printf
	movabsq	$4294967808, %rdx               # imm = 0x100000200
	leaq	4193792(%rdx), %rdi
	movl	$1, %esi
	movl	$1, %ecx
	xorl	%r8d, %r8d
	xorl	%r9d, %r9d
	callq	__hipPushCallConfiguration
	testl	%eax, %eax
	jne	.LBB2_2
# %bb.1:
	movq	24(%rsp), %rdi
	callq	_Z23__device_stub__KrnlDmmyPd
.LBB2_2:
	callq	hipDeviceSynchronize
	movl	$.Lstr, %edi
	callq	puts@PLT
	movq	24(%rsp), %rax
	movsd	(%rax), %xmm0                   # xmm0 = mem[0],zero
	movl	$.L.str.4, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	72(%rax), %xmm0                 # xmm0 = mem[0],zero
	movl	$.L.str.5, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	792(%rax), %xmm0                # xmm0 = mem[0],zero
	movl	$.L.str.6, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	7992(%rax), %xmm0               # xmm0 = mem[0],zero
	movl	$.L.str.7, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	79992(%rax), %xmm0              # xmm0 = mem[0],zero
	movl	$.L.str.8, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	799992(%rax), %xmm0             # xmm0 = mem[0],zero
	movl	$.L.str.9, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	7999992(%rax), %xmm0            # xmm0 = mem[0],zero
	movl	$.L.str.10, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	79999992(%rax), %xmm0           # xmm0 = mem[0],zero
	movl	$.L.str.11, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	799999992(%rax), %xmm0          # xmm0 = mem[0],zero
	movl	$.L.str.12, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movabsq	$7999999992, %rcx               # imm = 0x1DCD64FF8
	movsd	(%rax,%rcx), %xmm0              # xmm0 = mem[0],zero
	movl	$.L.str.13, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movabsq	$17179869176, %rbx              # imm = 0x3FFFFFFF8
	movsd	(%rax,%rbx), %xmm0              # xmm0 = mem[0],zero
	movl	$.L.str.14, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rax
	movsd	(%rax,%rbx), %xmm0              # xmm0 = mem[0],zero
	movl	$.L.str.15, %edi
	movb	$1, %al
	callq	printf
	movq	24(%rsp), %rdi
	callq	_Z11check_arrayPd
	fstpt	(%rsp)
	movl	$.L.str.16, %edi
	xorl	%eax, %eax
	callq	printf
	movq	24(%rsp), %rdi
	callq	hipFree
	xorl	%eax, %eax
	addq	$32, %rsp
	.cfi_def_cfa_offset 16
	popq	%rbx
	.cfi_def_cfa_offset 8
	retq
.Lfunc_end2:
	.size	main, .Lfunc_end2-main
	.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:
	subq	$40, %rsp
	.cfi_def_cfa_offset 48
	movq	__hip_gpubin_handle(%rip), %rdi
	testq	%rdi, %rdi
	jne	.LBB3_2
# %bb.1:
	movl	$__hip_fatbin_wrapper, %edi
	callq	__hipRegisterFatBinary
	movq	%rax, %rdi
	movq	%rax, __hip_gpubin_handle(%rip)
.LBB3_2:
	xorps	%xmm0, %xmm0
	movups	%xmm0, 16(%rsp)
	movups	%xmm0, (%rsp)
	movl	$_Z8KrnlDmmyPd, %esi
	movl	$.L__unnamed_1, %edx
	movl	$.L__unnamed_1, %ecx
	movl	$-1, %r8d
	xorl	%r9d, %r9d
	callq	__hipRegisterFunction
	movl	$__hip_module_dtor, %edi
	addq	$40, %rsp
	.cfi_def_cfa_offset 8
	jmp	atexit                          # TAILCALL
.Lfunc_end3:
	.size	__hip_module_ctor, .Lfunc_end3-__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	.LBB4_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
.LBB4_2:
	retq
.Lfunc_end4:
	.size	__hip_module_dtor, .Lfunc_end4-__hip_module_dtor
	.cfi_endproc
                                        # -- End function
	.type	_Z8KrnlDmmyPd,@object           # @_Z8KrnlDmmyPd
	.section	.rodata,"a",@progbits
	.globl	_Z8KrnlDmmyPd
	.p2align	3, 0x0
_Z8KrnlDmmyPd:
	.quad	_Z23__device_stub__KrnlDmmyPd
	.size	_Z8KrnlDmmyPd, 8

	.type	.L.str,@object                  # @.str
	.section	.rodata.str1.1,"aMS",@progbits,1
.L.str:
	.asciz	"element %ld, of value %lf causes dlta %lf\n"
	.size	.L.str, 43

	.type	.L.str.1,@object                # @.str.1
.L.str.1:
	.asciz	"huge in Bytes: %ld sizeof(double): %d\n"
	.size	.L.str.1, 39

	.type	.L.str.2,@object                # @.str.2
.L.str.2:
	.asciz	"working with blcks_per_grid.x: %d\n"
	.size	.L.str.2, 35

	.type	.L.str.4,@object                # @.str.4
.L.str.4:
	.asciz	"c[0] %lf\n"
	.size	.L.str.4, 10

	.type	.L.str.5,@object                # @.str.5
.L.str.5:
	.asciz	"c[9] %lf\n"
	.size	.L.str.5, 10

	.type	.L.str.6,@object                # @.str.6
.L.str.6:
	.asciz	"c[99] %lf\n"
	.size	.L.str.6, 11

	.type	.L.str.7,@object                # @.str.7
.L.str.7:
	.asciz	"c[999] %lf\n"
	.size	.L.str.7, 12

	.type	.L.str.8,@object                # @.str.8
.L.str.8:
	.asciz	"c[9999] %lf\n"
	.size	.L.str.8, 13

	.type	.L.str.9,@object                # @.str.9
.L.str.9:
	.asciz	"c[99999] %lf\n"
	.size	.L.str.9, 14

	.type	.L.str.10,@object               # @.str.10
.L.str.10:
	.asciz	"c[999999] %lf\n"
	.size	.L.str.10, 15

	.type	.L.str.11,@object               # @.str.11
.L.str.11:
	.asciz	"c[9999999] %lf\n"
	.size	.L.str.11, 16

	.type	.L.str.12,@object               # @.str.12
.L.str.12:
	.asciz	"c[99999999] %lf\n"
	.size	.L.str.12, 17

	.type	.L.str.13,@object               # @.str.13
.L.str.13:
	.asciz	"c[999999999] %lf\n"
	.size	.L.str.13, 18

	.type	.L.str.14,@object               # @.str.14
.L.str.14:
	.asciz	"c[2147483647] %lf\n"
	.size	.L.str.14, 19

	.type	.L.str.15,@object               # @.str.15
.L.str.15:
	.asciz	"c[DBLEARRAY16GB] %lf\n"
	.size	.L.str.15, 22

	.type	.L.str.16,@object               # @.str.16
.L.str.16:
	.asciz	"expecting 2305843018877370368 while receiving %llf\n"
	.size	.L.str.16, 52

	.type	.L__unnamed_1,@object           # @0
.L__unnamed_1:
	.asciz	"_Z8KrnlDmmyPd"
	.size	.L__unnamed_1, 14

	.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

	.type	.Lstr,@object                   # @str
	.section	.rodata.str1.1,"aMS",@progbits,1
.Lstr:
	.asciz	"back from GPU kernel"
	.size	.Lstr, 21

	.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 _Z23__device_stub__KrnlDmmyPd
	.addrsig_sym __hip_module_ctor
	.addrsig_sym __hip_module_dtor
	.addrsig_sym _Z8KrnlDmmyPd
	.addrsig_sym __hip_fatbin
	.addrsig_sym __hip_fatbin_wrapper
	.addrsig_sym __hip_cuid_

	.text
	.amdgcn_target "amdgcn-amd-amdhsa--gfx1100"
	.protected	_Z8KrnlDmmyPd           ; -- Begin function _Z8KrnlDmmyPd
	.globl	_Z8KrnlDmmyPd
	.p2align	8
	.type	_Z8KrnlDmmyPd,@function
_Z8KrnlDmmyPd:                          ; @_Z8KrnlDmmyPd
; %bb.0:
	s_clause 0x1
	s_load_b32 s2, s[0:1], 0x14
	s_load_b64 s[0:1], s[0:1], 0x0
	s_waitcnt lgkmcnt(0)
	s_and_b32 s2, s2, 0xffff
	s_delay_alu instid0(SALU_CYCLE_1) | instskip(NEXT) | instid1(VALU_DEP_1)
	v_mad_u64_u32 v[1:2], null, s15, s2, v[0:1]
	v_cvt_f64_u32_e32 v[2:3], v1
	s_delay_alu instid0(VALU_DEP_1) | instskip(SKIP_1) | instid1(VALU_DEP_1)
	v_add_f64 v[3:4], 0x40140000, v[2:3]
	v_mov_b32_e32 v2, 0
	v_lshlrev_b64 v[0:1], 3, v[1:2]
	s_delay_alu instid0(VALU_DEP_1) | instskip(NEXT) | instid1(VALU_DEP_2)
	v_add_co_u32 v0, vcc_lo, s0, v0
	v_add_co_ci_u32_e32 v1, vcc_lo, s1, v1, vcc_lo
	global_store_b64 v[0:1], v[3:4], off
	s_nop 0
	s_sendmsg sendmsg(MSG_DEALLOC_VGPRS)
	s_endpgm
	.section	.rodata,"a",@progbits
	.p2align	6, 0x0
	.amdhsa_kernel _Z8KrnlDmmyPd
		.amdhsa_group_segment_fixed_size 0
		.amdhsa_private_segment_fixed_size 0
		.amdhsa_kernarg_size 264
		.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 5
		.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	_Z8KrnlDmmyPd, .Lfunc_end0-_Z8KrnlDmmyPd
                                        ; -- End function
	.section	.AMDGPU.csdata,"",@progbits
; Kernel info:
; codeLenInByte = 112
; NumSgprs: 18
; NumVgprs: 5
; ScratchSize: 0
; MemoryBound: 0
; FloatMode: 240
; IeeeMode: 1
; LDSByteSize: 0 bytes/workgroup (compile time only)
; SGPRBlocks: 2
; VGPRBlocks: 0
; NumSGPRsForWavesPerEU: 18
; NumVGPRsForWavesPerEU: 5
; 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
      - .offset:         8
        .size:           4
        .value_kind:     hidden_block_count_x
      - .offset:         12
        .size:           4
        .value_kind:     hidden_block_count_y
      - .offset:         16
        .size:           4
        .value_kind:     hidden_block_count_z
      - .offset:         20
        .size:           2
        .value_kind:     hidden_group_size_x
      - .offset:         22
        .size:           2
        .value_kind:     hidden_group_size_y
      - .offset:         24
        .size:           2
        .value_kind:     hidden_group_size_z
      - .offset:         26
        .size:           2
        .value_kind:     hidden_remainder_x
      - .offset:         28
        .size:           2
        .value_kind:     hidden_remainder_y
      - .offset:         30
        .size:           2
        .value_kind:     hidden_remainder_z
      - .offset:         48
        .size:           8
        .value_kind:     hidden_global_offset_x
      - .offset:         56
        .size:           8
        .value_kind:     hidden_global_offset_y
      - .offset:         64
        .size:           8
        .value_kind:     hidden_global_offset_z
      - .offset:         72
        .size:           2
        .value_kind:     hidden_grid_dims
    .group_segment_fixed_size: 0
    .kernarg_segment_align: 8
    .kernarg_segment_size: 264
    .language:       OpenCL C
    .language_version:
      - 2
      - 0
    .max_flat_workgroup_size: 1024
    .name:           _Z8KrnlDmmyPd
    .private_segment_fixed_size: 0
    .sgpr_count:     18
    .sgpr_spill_count: 0
    .symbol:         _Z8KrnlDmmyPd.kd
    .uniform_work_group_size: 1
    .uses_dynamic_stack: false
    .vgpr_count:     5
    .vgpr_spill_count: 0
    .wavefront_size: 32
    .workgroup_processor_mode: 1
amdhsa.target:   amdgcn-amd-amdhsa--gfx1100
amdhsa.version:
  - 1
  - 2
...

	.end_amdgpu_metadata
