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Create a new curand instead of reseeding. (#1089)

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This commit is contained in:
Laurent Mazare
2023-10-14 10:03:59 +01:00
committed by GitHub
parent a193bf5f60
commit 9309cfc47d
2 changed files with 10 additions and 1 deletions
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4
candle-core/src/cuda_backend.rs
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@ -224,8 +224,10 @@ impl BackendDevice for CudaDevice {
} }
fn set_seed(&self, seed: u64) -> Result<()> { fn set_seed(&self, seed: u64) -> Result<()> {
// We do not call set_seed but instead create a new curand object. This ensures that the
// state will be identical and the same random numbers will be generated.
let mut curand = self.curand.lock().unwrap(); let mut curand = self.curand.lock().unwrap();
curand.0.set_seed(seed).w()?; curand.0 = cudarc::curand::CudaRng::new(seed, self.device.clone()).w()?;
Ok(()) Ok(())
} }

7
candle-core/src/device.rs
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@ -128,6 +128,13 @@ impl Device {
Ok(Self::Cuda(crate::CudaDevice::new(ordinal)?)) Ok(Self::Cuda(crate::CudaDevice::new(ordinal)?))
} }
pub fn set_seed(&self, seed: u64) -> Result<()> {
match self {
Self::Cpu => crate::cpu_backend::CpuDevice.set_seed(seed),
Self::Cuda(c) => c.set_seed(seed),
}
}
pub fn same_device(&self, rhs: &Self) -> bool { pub fn same_device(&self, rhs: &Self) -> bool {
match (self, rhs) { match (self, rhs) {
(Self::Cpu, Self::Cpu) => true, (Self::Cpu, Self::Cpu) => true,