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Most device buffers integrated into PrimeOrderCalculatorAccelerator. PrimeOrderCalculator switched to partial factoring on GPU.

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mlemanczyk committed 2025-11-26 03:16:39 +01:00
1 parent 5b48a89448
commit 13498dc460
17 files changed
+483 -432
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PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs
+9 -9
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@@ -54,7 +54,8 @@ internal static partial class PrimeOrderCalculator
ulong phi = prime - 1UL;
if (IsGpuHeuristicDevice && PrimeOrderGpuHeuristics.TryCalculateOrder(gpu, prime, previousOrder, config, divisorData, out ulong gpuOrder))
if (PrimeOrderGpuHeuristics.TryCalculateOrder(gpu, prime, previousOrder, config, divisorData, out ulong gpuOrder))
// if (IsGpuHeuristicDevice && PrimeOrderGpuHeuristics.TryCalculateOrder(gpu, prime, previousOrder, config, divisorData, out ulong gpuOrder))
{
return gpuOrder;
}
@@ -567,7 +568,6 @@ internal static partial class PrimeOrderCalculator
// DebugLog(() => $"Checking candidates ({candidateCount} candidates, {powBudget} pow budget)");
int index = 0;
const int MaxGpuBatchSize = 256;
const int StackGpuBatchSize = 64;
Span<ulong> stackGpuRemainders = stackalloc ulong[StackGpuBatchSize];
ArrayPool<ulong> pool = ThreadStaticPools.UlongPool;
@@ -575,7 +575,7 @@ internal static partial class PrimeOrderCalculator
{
int remaining = candidateCount - index;
int budgetRemaining = powBudget - powUsed;
int batchSize = Math.Min(remaining, Math.Min(budgetRemaining, MaxGpuBatchSize));
int batchSize = Math.Min(remaining, Math.Min(budgetRemaining, PrimeOrderConstants.MaxGpuBatchSize));
if (batchSize <= 0)
{
break;
@@ -593,7 +593,7 @@ internal static partial class PrimeOrderCalculator
if (batchSize <= StackGpuBatchSize)
{
Span<ulong> localRemainders = stackGpuRemainders[..batchSize];
status = PrimeOrderGpuHeuristics.TryPow2ModBatch(batch, prime, localRemainders, divisorData);
status = PrimeOrderGpuHeuristics.TryPow2ModBatch(gpu, batch, prime, localRemainders, divisorData);
if (status == GpuPow2ModStatus.Success)
{
gpuSuccess = true;
@@ -604,7 +604,7 @@ internal static partial class PrimeOrderCalculator
{
gpuPool = pool.Rent(batchSize);
Span<ulong> pooledRemainders = gpuPool.AsSpan(0, batchSize);
status = PrimeOrderGpuHeuristics.TryPow2ModBatch(batch, prime, pooledRemainders, divisorData);
status = PrimeOrderGpuHeuristics.TryPow2ModBatch(gpu, batch, prime, pooledRemainders, divisorData);
if (status == GpuPow2ModStatus.Success)
{
pooledGpuRemainders = pooledRemainders;
@@ -1086,7 +1086,7 @@ internal static partial class PrimeOrderCalculator
return PartialFactorResult.Empty;
}
const int FactorSlotCount = GpuSmallPrimeFactorSlots;
const int FactorSlotCount = PrimeOrderConstants.GpuSmallPrimeFactorSlots;
// stackalloc is faster than pooling
// ulong[] primeSlotsArray = ThreadStaticPools.UlongPool.Rent(FactorSlotCount);
@@ -1176,7 +1176,7 @@ internal static partial class PrimeOrderCalculator
// bool isPrime = HeuristicCombinedPrimeTester.IsPrimeCpu(composite);
// bool isPrime = HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, composite);
bool runOnGpu = RunOnGpu();
bool isPrime = !runOnGpu ? PrimeTester.IsPrime(composite) : HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, composite);
bool isPrime = !runOnGpu ? HeuristicCombinedPrimeTester.IsPrimeCpu(composite) : HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, composite);
// bool isPrime = PrimeTester.IsPrime(composite);
// bool isPrime = Open.Numeric.Primes.Prime.Numbers.IsPrime(composite);
@@ -1252,7 +1252,7 @@ internal static partial class PrimeOrderCalculator
bool isPrime = RunOnGpu()
? HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, composite)
: PrimeTester.IsPrime(composite);
: HeuristicCombinedPrimeTester.IsPrimeCpu(composite);
// bool isPrime = PrimeTester.IsPrime(composite);
// bool isPrime = HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, composite);
// bool isPrime = Open.Numeric.Primes.Prime.Numbers.IsPrime(composite);
@@ -1297,7 +1297,7 @@ internal static partial class PrimeOrderCalculator
// cofactorIsPrime = PrimeTester.IsPrimeGpu(gpu, cofactor);
cofactorIsPrime = RunOnGpu()
? HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, cofactor)
: PrimeTester.IsPrime(cofactor);
: HeuristicCombinedPrimeTester.IsPrimeCpu(cofactor);
// cofactorIsPrime = PrimeTester.IsPrime(cofactor);
// cofactorIsPrime = Open.Numeric.Primes.Prime.Numbers.IsPrime(cofactor);
}