static TStripeMapping SplitBetweenDevicesRandom(TRandom & rng,
ui64 objectCount,
ui64 objectSize = 1) {
const ui64 devCount = GetCudaManager().GetDeviceCount();
TVector<TSlice> slices(devCount);
const ui64 objectPerDevice = ((objectCount + devCount - 1) / devCount) + rng.NextUniformL() % (objectCount / devCount / 10);
ui64 total = 0;
for (ui32 i = 0; i < devCount; ++i) {
const ui64 devSize = Min(objectCount - total, objectPerDevice);
slices[i] = TSlice(total, total + devSize);
total += devSize;
}
return TStripeMapping(std::move(slices), objectSize);
}
