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Use f16 data in kernel launch example #47

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Merged
bratpiorka merged 2 commits into from
Aug 25, 2026
Merged

Use f16 data in kernel launch example #47

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bd2628c
Add half dev dependency
szymon-zadworny Aug 24, 2026
f8c5c36
Replace f32 with f16 data in kernel_launch example
szymon-zadworny Aug 24, 2026
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59 changes: 59 additions & 0 deletions Cargo.lock
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1 change: 1 addition & 0 deletions sycl/sycl-rs/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -29,4 +29,5 @@ pin-project = "1.1.13"
thiserror = "2.0.18"

[dev-dependencies]
half = { version = "2.7.1", features = ["bytemuck"] }
tokio = { version = "1.52.3", features = ["macros", "rt", "rt-multi-thread"] }
11 changes: 6 additions & 5 deletions sycl/sycl-rs/examples/kernel_launch.rs
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Expand Up @@ -6,6 +6,7 @@
// SPDX-License-Identifier: MIT OR Apache-2.0
//

use half::f16;
use sycl_rs::prelude::*;

static IOTA_SRC: &str = r#"
Expand All @@ -15,16 +16,16 @@ namespace syclexp = sycl::ext::oneapi::experimental;

extern "C"
SYCL_EXT_ONEAPI_FUNCTION_PROPERTY((syclexp::nd_range_kernel<1>))
void iota(float start, float *ptr) {
void iota(sycl::half start, sycl::half *ptr) {
size_t id = syclext::this_work_item::get_nd_item<1>().get_global_linear_id();
ptr[id] = start + static_cast<float>(id);
ptr[id] = start + static_cast<sycl::half>(id);
}
"#;

#[tokio::main]
async fn main() -> sycl_rs::Result<()> {
let mut queue = Queue::new();
let mut device_array = queue.alloc_device::<f32>(1024)?.await?;
let mut device_array = queue.alloc_device::<f16>(1024)?.await?;

let kernel = queue
.get_context()
Expand All @@ -36,12 +37,12 @@ async fn main() -> sycl_rs::Result<()> {
queue.launch(
NdRange::new([1024], [16]),
&kernel,
(3.14_f32, &mut device_array),
(f16::from_f32(3.14), &mut device_array),
)
}?
.await?;

let mut host_array = queue.alloc_host::<f32>(1024)?.await?;
let mut host_array = queue.alloc_host::<f16>(1024)?.await?;

queue.copy(&device_array, &mut host_array)?.await?;

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