myl7/fss

Function secret sharing (FSS) primitives including:

2-party distributed point function (DPF), based on Boyle et al. (CCS '16) or Half-Tree (EUROCRYPT '23).
2-party distributed comparison function (DCF), based on Boyle et al. (EUROCRYPT '21) or Grotto (CCS '23).
2-party verifiable distributed point function (VDPF), based on Castro & Polychroniadou (EUROCRYPT '22).
2-party verifiable distributed multi-point function (VDMPF), based on Castro & Polychroniadou (EUROCRYPT '22).

Features:

First-class support for GPU (based on CUDA)
Top-tier performance shown by benchmarks
Well-commented and documented
Header-only library, easy for integration

Introduction

Multi-party computation (MPC) is a subfield of cryptography that aims to enable a group of parties (e.g., servers) to jointly compute a function over their inputs while keeping the inputs private.

Secret sharing is a method that distributes a secret among a group of parties, such that no individual party holds any information about the secret. For example, a number $x$ can be secret-shared into $x_0, x_1$ via $x = x_0 + x_1$.

FSS is a scheme to secret-share a function into a group of function shares. Each function share, called as a key, can be individually evaluated on a party. The outputs of the keys are the shares of the original function output. FSS consists of 2 methods: Gen for generating function shares as keys and Eval for evaluating a key to get an output share. FSS's workflow is shown below:

DPF/DCF are FSS for point/comparison functions. They are called out because 2-party DPF/DCF can have $O(\log N)$ key size, where $N$ is the input domain size. Meanwhile, 3-or-more-party DPF/DCF and general FSS have $O(\sqrt{N})$ key size. More details, including the definitions and the implementation details that users must care about, can be found in the documentation of dpf.cuh and dcf.cuh files.

Get Started

Prerequisites

CMake >= 3.22
CUDA toolkit >= 12.0 (for C++20 support). Tested on the latest CUDA toolkit.
OpenSSL 3 (only required for CPU with AES-128 MMO PRG)

Build

Clone the repository:

git clone https://github.com/myl7/fss.git
cd fss

Option A: Install via CMake and use find_package

cmake -B build -DBUILD_TESTING=OFF -DCMAKE_INSTALL_PREFIX=/path/to/install
cmake --build build
cmake --install build

Then in your project's CMakeLists.txt:

find_package(fss REQUIRED)
target_link_libraries(your_target fss::fss)

When configuring your project, point CMake to the install prefix:

cmake -B build -DCMAKE_PREFIX_PATH=/path/to/install

Option B: Use as a subdirectory (header-only)

Without installing, you can define the target directly in your CMakeLists.txt, like the samples do:

add_library(fss INTERFACE)
target_include_directories(fss INTERFACE "/path/to/fss/include")
target_compile_features(fss INTERFACE cxx_std_20 cuda_std_20)

Then link it in your project:

target_link_libraries(your_target fss)

CPU

This walks through using DPF and DCF on the CPU with AES-128 MMO PRG. This PRG requires OpenSSL.

Include the headers and set up type aliases:

#include <fss/dpf.cuh>
#include <fss/dcf.cuh>
#include <fss/group/bytes.cuh>
#include <fss/prg/aes128_mmo.cuh>

constexpr int kInBits = 8;  // Input domain: 2^8 = 256 values
using In = uint8_t;
using Group = fss::group::Bytes;

// DPF uses mul=2, DCF uses mul=4
using DpfPrg = fss::prg::Aes128Mmo<2>;
using DcfPrg = fss::prg::Aes128Mmo<4>;
using Dpf = fss::Dpf<kInBits, Group, DpfPrg, In>;
using Dcf = fss::Dcf<kInBits, Group, DcfPrg, In>;

Create the PRG with AES keys and instantiate DPF/DCF:

// DPF PRG needs 2 AES keys
unsigned char key0[16] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
unsigned char key1[16] = {16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
const unsigned char *keys[2] = {key0, key1};
auto ctxs = DpfPrg::CreateCtxs(keys);

DpfPrg prg(ctxs);
Dpf dpf{prg};

Run Gen to generate correction words (keys) from secret inputs:

In alpha = 42;                  // Secret point / threshold
int4 beta = {7, 0, 0, 0};      // Secret payload (LSB of .w must be 0)

// Random seeds for the two parties (LSB of .w must be 0)
int4 seeds[2] = {
    {0x11111111, 0x22222222, 0x33333333, 0x44444440},
    {0x55555555, 0x66666666, 0x77777777, static_cast<int>(0x88888880u)},
};

Dpf::Cw cws[kInBits + 1];
dpf.Gen(cws, seeds, alpha, beta);

Run Eval on each party and reconstruct using the group:

// Each party evaluates independently
int4 y0 = dpf.Eval(false, seeds[0], cws, alpha);
int4 y1 = dpf.Eval(true, seeds[1], cws, alpha);

// Reconstruct via the group: convert to group elements, add, convert back
// For Bytes group this is XOR; for Uint group this is arithmetic addition
int4 sum = (Group::From(y0) + Group::From(y1)).Into();
// sum == beta at x == alpha, 0 otherwise

Free the AES contexts when done:
```
DpfPrg::FreeCtxs(ctxs);
```

DCF follows the same pattern — use DcfPrg (mul=4, needs 4 AES keys), Dcf, and Dcf::Cw. The reconstructed output equals beta when x < alpha and 0 otherwise.

Link with OpenSSL in your CMakeLists.txt:

find_package(OpenSSL REQUIRED)
target_link_libraries(your_target fss OpenSSL::Crypto)

See samples/dpf_dcf_cpu.cu for the complete working example.

GPU

This walks through using DPF and DCF on the GPU with ChaCha PRG.

Include the headers and set up type aliases:

#include <fss/dpf.cuh>
#include <fss/dcf.cuh>
#include <fss/group/bytes.cuh>
#include <fss/prg/chacha.cuh>

constexpr int kInBits = 8;
using In = uint8_t;
using Group = fss::group::Bytes;

// DPF uses mul=2, DCF uses mul=4
using DpfPrg = fss::prg::ChaCha<2>;
using DcfPrg = fss::prg::ChaCha<4>;
using Dpf = fss::Dpf<kInBits, Group, DpfPrg, In>;
using Dcf = fss::Dcf<kInBits, Group, DcfPrg, In>;

Set up a nonce in constant memory and create the PRG in a kernel:

__constant__ int kNonce[2] = {0x12345678, 0x9abcdef0};

__global__ void GenKernel(Dpf::Cw *cws, const int4 *seeds, const In *alphas, const int4 *betas) {
    int tid = blockIdx.x * blockDim.x + threadIdx.x;

    DpfPrg prg(kNonce);
    Dpf dpf{prg};

    int4 s[2] = {seeds[tid * 2], seeds[tid * 2 + 1]};
    dpf.Gen(cws + tid * (kInBits + 1), s, alphas[tid], betas[tid]);
}

Prepare host data, copy to device, and launch the Gen kernel:

int4 *d_seeds = /* cudaMalloc + cudaMemcpy seeds to device */;
In *d_alphas = /* cudaMalloc + cudaMemcpy alphas to device */;
int4 *d_betas = /* cudaMalloc + cudaMemcpy betas to device */;

Dpf::Cw *d_cws;
cudaMalloc(&d_cws, sizeof(Dpf::Cw) * (kInBits + 1) * N);

GenKernel<<<blocks, threads>>>(d_cws, d_seeds, d_alphas, d_betas);

Write and launch an Eval kernel for each party, then copy results back:

__global__ void EvalKernel(int4 *ys, bool party, const int4 *seeds, const Dpf::Cw *cws, const In *xs) {
    int tid = blockIdx.x * blockDim.x + threadIdx.x;

    DpfPrg prg(kNonce);
    Dpf dpf{prg};

    ys[tid] = dpf.Eval(party, seeds[tid], cws + tid * (kInBits + 1), xs[tid]);
}

// Launch for party 0 and party 1, then copy d_ys back to host
EvalKernel<<<blocks, threads>>>(d_ys, false, d_seeds0, d_cws, d_xs);
EvalKernel<<<blocks, threads>>>(d_ys, true, d_seeds1, d_cws, d_xs);

Reconstruct on the host using the group, same as the CPU case:

int4 sum = (Group::From(h_y0s[i]) + Group::From(h_y1s[i])).Into();

DCF follows the same pattern — use DcfPrg (mul=4), Dcf, and Dcf::Cw.

See samples/dpf_dcf_gpu.cu for the complete working example.

Samples

samples/ holds a standalone program per scheme. They form their own CMake project:

cmake -B build/samples -S samples
cmake --build build/samples

Sample	Scheme	Shows
`dpf_dcf_cpu.cu`	DPF, DCF	Host `Gen`/`Eval` with AES-128 MMO PRG
`dpf_dcf_gpu.cu`	DPF, DCF	`Gen`/`Eval` inside CUDA kernels with ChaCha PRG
`half_tree_dpf_cpu.cu`	Half-Tree DPF	`Gen`/`Eval`/`EvalAll` with a mul=1 PRG and a separate hash key
`grotto_dcf_cpu.cu`	Grotto DCF	`Gen`/`Preprocess`/`Eval` over a parity segment tree, plus `EvalAll`
`vdpf_cpu.cu`	VDPF	`Gen`/`Eval` plus the `Prove`/`Verify` check
`vdmpf_cpu.cu`	VDMPF	`Gen`/`BatchEval` over cuckoo-hash packed points

The CPU samples link OpenSSL, and EvalAll uses OpenMP when it is found.

Python

The fss_crypto package exposes PyTorch wrappers for DPF and DCF. It is published on PyPI as fss-crypto.

Install it with pip:

pip install fss-crypto

Or add it to a uv project:

uv add fss-crypto

The package requires Python >= 3.13 and PyTorch >= 2.6. The first use of each parameter set JIT-compiles a small CUDA extension with torch.utils.cpp_extension.load, so the CUDA toolkit is required even when the example below runs on CPU tensors. The aes128_mmo PRG also links OpenSSL at JIT time. Compiled extensions are cached under ~/.cache/fss_crypto.

To develop against a checkout instead, install the dev extra and run the tests:

uv sync --extra dev
uv run pytest

import torch
import fss_crypto

dpf = fss_crypto.Dpf(in_bits=8, group="bytes", prg="chacha")

s0s = torch.tensor(
    [
        [0x11111111, 0x22222222, 0x33333333, 0x44444440],
        [0x55555555, 0x66666666, 0x77777777, -0x77777780],
    ],
    dtype=torch.int32,
)
beta = torch.tensor([7, 0, 0, 0], dtype=torch.int32)

cws = dpf.gen(s0s, alpha=42, beta=beta)
y0 = dpf.eval(party=0, s0=s0s[0], cws=cws, x=42)
y1 = dpf.eval(party=1, s0=s0s[1], cws=cws, x=42)

assert torch.bitwise_xor(y0, y1).equal(beta)

gen and eval_all are CPU-only. eval can run on CUDA tensors for ChaCha PRG when CUDA is available. The JIT path sets a default TORCH_CUDA_ARCH_LIST on machines with no visible GPU so CPU tests can still compile the extension.

Compiler Warnings

You may see warnings like "integer constant is so large that it is unsigned" during compilation. These cannot be easily suppressed but are harmless and can be safely ignored.

nvcc 12.8: `Uint` as a `global` kernel template argument

nvcc 12.8 fails to compile the stub file when fss::group::Uint<__uint128_t, ...> is used as a template argument to a __global__ kernel — it emits a 128-bit integer literal that g++ cannot parse. __device__ functions are not affected (no stub is generated for them).

Workaround: wrap the type in a plain aggregate struct that satisfies Groupable but has no __uint128_t non-type template parameter in its name. The struct must have no user-declared constructors to remain an aggregate. See third_party/fss/bench.cu for an example.

Benchmarks

Microbenchmarks built on Google Benchmark, covering:

Schemes: DPF, DCF, VDPF, Half-Tree DPF, and Grotto DCF.
Operations: Gen, Eval, host EvalAll, VDPF Prove, Grotto DCF Preprocess and PreprocessEvalAll, GPU point eval, and full-domain GPU EvalAll.
PRGs: AES-128 MMO over OpenSSL, AES-128 MMO over AES-NI intrinsics, software AES-128 MMO, and ChaCha. The CPU benchmarks cover all four. The GPU benchmarks cover ChaCha and software AES-128 MMO, the two that run on device.
Output groups: Uint and Bytes.
VDPF hashes: SHA-256 and BLAKE3.
Input domain sizes: 2^20 everywhere, plus 2^14 and 2^17 for DPF Eval.

Configure with BUILD_BENCH=ON and build the targets:

cmake -B build -DBUILD_BENCH=ON -DCMAKE_BUILD_TYPE=RelWithDebInfo
cmake --build build --target bench_cpu bench_gpu

Run all benchmarks:

./build/bench_cpu
./build/bench_gpu

Run a subset using --benchmark_filter (regex):

./build/bench_cpu --benchmark_filter=BM_DcfGen
./build/bench_cpu --benchmark_filter=BM_DpfEval_Uint_Aes/20

The Makefile has shortcuts for the same runs. make bench_cpu pins the run to one core and switches that core to the performance governor, which needs sudo. make bench_gpu pins the run to one GPU. Both write their log under build/.

CPU_ID=0 make bench_cpu
GPU_ID=1 CUDA_ARCH=120 make bench_gpu

CUDA_ARCH is only needed when CMake cannot infer the architecture. Two more targets support the sections below: make ptx_info rebuilds with --ptxas-options=-v and collects the register usage into build/ptx_info.log, and make profile_gpu records an Nsight Systems profile of one benchmark selected by GPU_PROFILE_BENCH.

CPU Results

Run on Intel Xeon Platinum 8352V @ 2.10GHz (Ice Lake), single core, pinned with taskset -c 0. The host is shared and runs the schedutil cpufreq governor, so the effective single-core clock varies with host load (observed 0.8-3.5 GHz). Per-key rows run one op per iteration, so Avg per item equals Time and Items/s counts keys. EvalAll rows process 2^20 outputs per iteration, so their Items/s counts outputs and Avg per item is its reciprocal.

Benchmark	PRG	Time	Avg per item	Items/s
BM_DpfEval_Uint_Aes/20	`Aes128Mmo<2>`	1078 ns	1078 ns	927.6k/s
BM_DpfEval_Uint_Aes/14	`Aes128Mmo<2>`	751 ns	751 ns	1.332M/s
BM_DpfEval_Uint_Aes/17	`Aes128Mmo<2>`	931 ns	931 ns	1.074M/s
BM_DpfGen_Uint_Aes/20	`Aes128Mmo<2>`	2272 ns	2272 ns	440.1k/s
BM_DpfEval_Bytes_Aes/20	`Aes128Mmo<2>`	1076 ns	1076 ns	929.4k/s
BM_DpfEvalAll_Uint_Aes/20	`Aes128Mmo<2>`	78.7 ms	74.9 ns	13.34M/s
BM_DpfEval_Uint_ChaCha/20	`ChaCha<2>`	3823 ns	3823 ns	261.6k/s
BM_DpfEval_Uint_AesSoft/20	`Aes128Soft<2>`	4094 ns	4094 ns	244.3k/s
BM_DpfEval_Uint_AesRaw/20	`Aes128MmoRaw<2>`	333 ns	333 ns	3.003M/s
BM_DpfEval_Bytes_AesRaw/20	`Aes128MmoRaw<2>`	345 ns	345 ns	2.899M/s
BM_DpfGen_Uint_AesRaw/20	`Aes128MmoRaw<2>`	463 ns	463 ns	2.160M/s
BM_DpfGen_Bytes_AesRaw/20	`Aes128MmoRaw<2>`	428 ns	428 ns	2.336M/s
BM_DcfEval_Uint_AesRaw/20	`Aes128MmoRaw<4>`	343 ns	343 ns	2.915M/s
BM_DcfEval_Bytes_AesRaw/20	`Aes128MmoRaw<4>`	412 ns	412 ns	2.427M/s
BM_DcfGen_Uint_AesRaw/20	`Aes128MmoRaw<4>`	645 ns	645 ns	1.550M/s
BM_DcfGen_Bytes_AesRaw/20	`Aes128MmoRaw<4>`	698 ns	698 ns	1.433M/s
BM_DcfEval_Uint_Aes/20	`Aes128Mmo<4>`	1481 ns	1481 ns	675.2k/s
BM_DcfGen_Uint_Aes/20	`Aes128Mmo<4>`	3264 ns	3264 ns	306.4k/s
BM_DcfEval_Bytes_Aes/20	`Aes128Mmo<4>`	1772 ns	1772 ns	564.3k/s
BM_DcfEvalAll_Uint_Aes/20	`Aes128Mmo<4>`	97.8 ms	93.2 ns	10.73M/s
BM_DcfEvalAll_Bytes_Aes/20	`Aes128Mmo<4>`	98.6 ms	93.9 ns	10.64M/s
BM_VdpfEval_Uint_Aes_Sha256/20	`Aes128Mmo<2>`	2499 ns	2499 ns	400.2k/s
BM_VdpfGen_Uint_Aes_Sha256/20	`Aes128Mmo<2>`	4146 ns	4146 ns	241.2k/s
BM_VdpfEval_Uint_Aes_Blake3/20	`Aes128Mmo<2>`	1437 ns	1437 ns	695.9k/s
BM_VdpfProve_Uint_ChaCha_Blake3/20	`ChaCha<2>`	181 ns	181 ns	5.525M/s
BM_VdpfEvalAll_Uint_Aes_Sha256/20	`Aes128Mmo<2>`	2138 ms	2037 ns	491k/s
BM_HalfTreeDpfEval_Uint_Aes/20	`Aes128Mmo<1>`	1017 ns	1017 ns	983.3k/s
BM_HalfTreeDpfGen_Uint_Aes/20	`Aes128Mmo<1>`	2236 ns	2236 ns	447.2k/s
BM_HalfTreeDpfEvalAll_Uint_Aes/20	`Aes128Mmo<1>`	86.9 ms	82.8 ns	12.08M/s
BM_GrottoDcfEval_Aes/20	`Aes128Mmo<2>`	17.0 ns	17.0 ns	58.82M/s
BM_GrottoDcfPreprocess_Aes/20	`Aes128Mmo<2>`	57.7 ms	—	—
BM_GrottoDcfPreprocessEvalAll_Aes/20	`Aes128Mmo<2>`	119.9 ms	114.2 ns	8.758M/s

GPU Results

Run on NVIDIA RTX PRO 5000 (72GB VRAM, Blackwell, sm_120), CUDA 13.2, driver 595.71.05. The host is shared: the GPU boost clock varies with host state (observed 180-2355 MHz). Each iteration runs 1M (2^20) keys in parallel. Time is the whole batch. Avg per item is the reciprocal of Items/s: per key for Eval/Gen/point-eval rows, per output for EvalAll rows (2^40 outputs per iteration).

Benchmark	PRG	Time	Avg per item	Items/s
BM_DpfEval_Uint_ChaCha/20	`ChaCha<2>`	1398.8 µs	1.334 ns	749.6M/s
BM_DpfEval_Uint_ChaCha/14	`ChaCha<2>`	765.7 µs	0.730 ns	1.369G/s
BM_DpfEval_Uint_ChaCha/17	`ChaCha<2>`	956.8 µs	0.912 ns	1.096G/s
BM_DpfGen_Uint_ChaCha/20	`ChaCha<2>`	1965.4 µs	1.874 ns	533.5M/s
BM_DpfEval_Bytes_ChaCha/20	`ChaCha<2>`	1398.9 µs	1.334 ns	749.6M/s
BM_DpfEval_Uint_AesSoft/20	`Aes128Soft<2>`	3087.5 µs	2.944 ns	339.6M/s
BM_DcfEval_Uint_ChaCha/20	`ChaCha<4>`	1421.2 µs	1.355 ns	737.8M/s
BM_DcfGen_Uint_ChaCha/20	`ChaCha<4>`	1969.1 µs	1.878 ns	532.5M/s
BM_VdpfEval_Uint_ChaCha_Blake3/20	`ChaCha<2>`	1241.3 µs	1.184 ns	844.7M/s
BM_VdpfGen_Uint_ChaCha_Blake3/20	`ChaCha<2>`	2132.2 µs	2.033 ns	491.8M/s
BM_HalfTreeDpfEval_Uint_ChaCha/20	`ChaCha<1>`	1001.7 µs	0.955 ns	1.047G/s
BM_HalfTreeDpfGen_Uint_ChaCha/20	`ChaCha<1>`	1961.5 µs	1.871 ns	534.6M/s
BM_DpfEvalAllGpu_Uint_ChaCha/20	`ChaCha<2>`	71.3 s	64.8 ps	15.43G/s
BM_HalfTreeDpfEvalAllGpu_Uint_ChaCha/20	`ChaCha<1>`	90.9 s	82.7 ps	12.09G/s
BM_DpfEvalPointGpu_Uint_ChaCha/20	`ChaCha<2>`	1024.5 µs	0.977 ns	1.024G/s
BM_DcfEvalPointGpu_Uint_ChaCha/20	`ChaCha<4>`	1120.6 µs	1.069 ns	935.7M/s
BM_HalfTreeDpfEvalPointGpu_Uint_ChaCha/20	`ChaCha<1>`	1000.9 µs	0.955 ns	1.048G/s
BM_VdpfEvalPointGpu_Uint_ChaCha_Blake3/20	`ChaCha<2>`	1109.2 µs	1.058 ns	945.3M/s

GPU kernel register usage (compiled for sm_120, --ptxas-options=-v):

Kernel	Group	PRG	Registers	Stack	Smem
DpfEval	Uint	`ChaCha<2>`	39
DpfEval	Bytes	`ChaCha<2>`	40
DpfGen	Uint	`ChaCha<2>`	43
DpfGen	Bytes	`ChaCha<2>`	48
DpfEval	Uint	`Aes128Soft<2>`	80	624B	2304B
DpfGen	Uint	`Aes128Soft<2>`	80	624B	2304B
HalfTreeDpfEval	Uint	`ChaCha<1>`	40
HalfTreeDpfGen	Uint	`ChaCha<1>`	46
VdpfEval	Uint	`ChaCha<2>`	40
VdpfGen	Uint	`ChaCha<2>`	79
DcfEval	Uint	`ChaCha<4>`	42
DcfGen	Uint	`ChaCha<4>`	50
DpfEvalAll	Uint	`ChaCha<2>`	55		5120B
HalfTreeDpfEvalAll	Uint	`ChaCha<1>`	55		5120B
DpfEvalPoint	Uint	`ChaCha<2>`	39
DcfEvalPoint	Uint	`ChaCha<4>`	46
VdpfEvalPoint	Uint	`ChaCha<2>`	40
HalfTreeDpfEvalPoint	Uint	`ChaCha<1>`	38

The PRG drives most of the difference. Software AES-128 MMO costs about twice the registers of ChaCha for the same scheme and group, and it is the only backend here that spills to stack and holds a T-table in shared memory. The mul parameter is part of the PRG type because it sets how many 16B blocks one Gen call produces. The EvalAll kernels use shared memory for per-block staging. Every kernel other than the two software-AES ones has zero spills.

Flamegraph

Generate a CPU flamegraph with perf and FlameGraph:

perf record -g ./build/bench_cpu --benchmark_filter=BM_DpfEval_Uint_Aes/20
perf script | /path/to/FlameGraph/stackcollapse-perf.pl | /path/to/FlameGraph/flamegraph.pl > build/flamegraph.svg

make flamegraph runs the same steps, taking the FlameGraph checkout from FLAMEGRAPH_DIR (default ../FlameGraph) and the benchmark from FLAMEGRAPH_BENCH:

FLAMEGRAPH_DIR=/path/to/FlameGraph FLAMEGRAPH_BENCH=BM_DcfGen_Uint_Aes/20 make flamegraph

Open build/flamegraph.svg in a browser. The graph is interactive: click a frame to zoom in.

License

Apache License, Version 2.0

Name		Name	Last commit message	Last commit date
.githooks		.githooks
.github/workflows		.github/workflows
doc		doc
fss_crypto		fss_crypto
include/fss		include/fss
samples		samples
src		src
test		test
third_party		third_party
.clang-format		.clang-format
.gitignore		.gitignore
.gitmodules		.gitmodules
.ruff.toml		.ruff.toml
AGENTS.md		AGENTS.md
CHANGELOG.md		CHANGELOG.md
CLAUDE.md		CLAUDE.md
CMakeLists.txt		CMakeLists.txt
Doxyfile		Doxyfile
LICENSE.txt		LICENSE.txt
Makefile		Makefile
README.md		README.md
check_evalall_gpu.cu		check_evalall_gpu.cu
pyproject.toml		pyproject.toml
uv.lock		uv.lock

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myl7/fss

Introduction

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Compiler Warnings

nvcc 12.8: Uint as a __global__ kernel template argument

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nvcc 12.8: `Uint` as a `global` kernel template argument