Archive/ZLUDA
0
0
Fork 0
mirror of https://github.com/vosen/ZLUDA.git synced 2025-04-28 13:37:57 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix offset calculation in kernel launch

Browse source
This commit is contained in:
Andrzej Janik 2021-06-27 13:08:46 +02:00
parent b2765370e5
commit d7d38256e0
2 changed files with 19 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

18
zluda/src/impl/function.rs
View file

@ -110,23 +110,24 @@ pub fn launch_kernel(
match (buffer_size, buffer_ptr) {
(Some(buffer_size), Some(buffer_ptr)) => {
let sum_of_kernel_argument_sizes =
func.arg_size.iter().fold(0, |offset, size_of_arg| {
size_of_arg + round_up_to_multiple(offset, *size_of_arg)
});
func.arg_size
.iter()
.fold(0, |sum_of_arg_sizes, size_of_arg| {
sum_of_arg_sizes + align_to_usize(*size_of_arg)
});
if buffer_size != sum_of_kernel_argument_sizes {
return Err(CUresult::CUDA_ERROR_INVALID_VALUE);
}
let mut offset = 0;
for (i, arg_size) in func.arg_size.iter().enumerate() {
let buffer_offset = round_up_to_multiple(offset, *arg_size);
unsafe {
func.base.set_arg_raw(
i as u32,
*arg_size,
buffer_ptr.add(buffer_offset) as *const _,
buffer_ptr.add(offset) as *const _,
)?
};
offset = buffer_offset + *arg_size;
offset += align_to_usize(*arg_size);
}
}
_ => return Err(CUresult::CUDA_ERROR_INVALID_VALUE),
@ -159,8 +160,9 @@ pub fn launch_kernel(
})?
}
fn round_up_to_multiple(x: usize, multiple: usize) -> usize {
((x + multiple - 1) / multiple) * multiple
fn align_to_usize(value: usize) -> usize {
let multiple = std::mem::size_of::<usize>();
((value + multiple - 1) / multiple) * multiple
}
pub(crate) fn get_attribute(

17
zluda_dump/src/lib.rs
View file

@ -573,24 +573,24 @@ fn dump_arguments(
}
match (buffer_size, buffer_ptr) {
(Some(buffer_size), Some(buffer_ptr)) => {
let sum_of_kernel_argument_sizes = args.iter().fold(0, |offset, size_of_arg| {
size_of_arg + round_up_to_multiple(offset, *size_of_arg)
});
let sum_of_kernel_argument_sizes =
args.iter().fold(0, |sum_of_arg_sizes, size_of_arg| {
sum_of_arg_sizes + align_to_usize(*size_of_arg)
});
if buffer_size != sum_of_kernel_argument_sizes {
return Err("Malformed `extra` parameter to kernel launch")?;
}
let mut offset = 0;
for (i, arg_size) in args.iter().enumerate() {
let buffer_offset = round_up_to_multiple(offset, *arg_size);
unsafe {
dump_argument_to_file(
&dump_dir,
i,
*arg_size,
buffer_ptr.add(buffer_offset) as *const _,
buffer_ptr.add(offset) as *const _,
)?
};
offset = buffer_offset + *arg_size;
offset += align_to_usize(*arg_size);
}
}
_ => return Err("Malformed `extra` parameter to kernel launch")?,
@ -599,8 +599,9 @@ fn dump_arguments(
Ok(())
}
fn round_up_to_multiple(x: usize, multiple: usize) -> usize {
((x + multiple - 1) / multiple) * multiple
fn align_to_usize(value: usize) -> usize {
let multiple = std::mem::size_of::<usize>();
((value + multiple - 1) / multiple) * multiple
}
unsafe fn dump_argument_to_file(